INVERTER

INVERTER
Plug-in option
FR-A8AVP
INSTRUCTION MANUAL (FOR INVERTER/CONVERTER SWITCHING)
Changeover between inverter and
high power factor converter
Compatible inverters: FR-A842-07700(315K) to 12120(500K)

OUTLINE
1
INVERTER-TO-
CONVERTER 2
CONVERSION
INSTALLATION AND
WIRING 3

FR-A8AVP INSTRUCTION MANUAL (FOR INVERTER/CONVERTER SWITCHING)

PRECAUTIONS FOR USE
OF THE CONVERTER 4
PARAMETERS
5
PROTECTIVE FUNCTIONS
6
PRECAUTIONS FOR
MAINTENANCE AND 7
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
INSPECTION
SPECIFICATIONS
8
CONVERTER-TO-
INVERTER CONVERSION 9

IB(NA)-0600777ENG-C(1902)MEE Printed in Japan Specifications subject to change without notice. C

Thank you for choosing this Mitsubishi Electric inverter plug-in option.
This Instruction Manual provides handling information and precautions for use of the this product. Incorrect handling might cause
an unexpected fault. Before using this product, always read this Instruction Manual carefully to ensure proper use.
Please forward this Instruction Manual to the end user.
 Injury prevention
Safety instructions
Do not attempt to install, operate, maintain or inspect this CAUTION
product until you have read through this Instruction Manual  The voltage applied to each terminal must be as specified in the
and appended documents carefully and can use the Instruction Manual. Otherwise a burst, damage, etc. may occur.
equipment correctly. Do not use this product until you have a  The cables must be connected to the correct terminals.
full knowledge of the equipment, safety information and Otherwise a burst, damage, etc. may occur.
instructions.  The polarity (+ and -) must be correct. Otherwise a burst,
In this Instruction Manual, the safety instruction levels are damage, etc. may occur.
classified into "WARNING" and "CAUTION"  While power is ON or for some time after power-OFF, do not
Incorrect handling may cause touch the inverter/converter, reactor 1, reactor 2, phase
WARNING hazardous conditions, resulting in detection transformer box, filter capacitor, and inrush current
death or severe injury. limit resistor as they will be extremely hot. Doing so may cause a
Incorrect handling may cause burn.
CAUTION hazardous conditions, resulting in
medium or slight injury, or may cause  Additional instructions
only material damage. The following instructions must be also followed. If the inverter/
Note that even the level may lead to a converter is handled incorrectly, it may cause an unexpected
CAUTION
fault, injury, or electric shock.
serious consequence depending on conditions.
Be sure to follow the instructions of both levels as they are
critical to personnel safety. CAUTION
Transportation and installation
 Electric shock prevention  The inverter/converter must be transported in correct method
that corresponds to the weight. Failure to do so may lead to
WARNING injuries.
 Do not stack the boxes containing products higher than the
 Do not remove the front cover or the wiring cover while the number recommended.
inverter or the high power factor converter (converted from the  The inverter/converter must be installed in a position where it
inverter, hereafter called "converter") is powered ON. Do not withstands the weight of the product according to the information
operate the inverter/converter with any cover or wiring cover in the Instruction Manual.
removed, as accidental contact with exposed high-voltage  Do not install or operate the inverter/converter if it is damaged or
has parts missing.
terminals and internal components may occur, resulting in an
 When carrying the inverter/converter, do not hold it by the front
electrical shock. cover. Doing so may cause a fall or failure.
 Even if power is OFF, do not remove the front cover except for  Do not stand or rest heavy objects on the inverter/converter.
wiring or periodic inspection as the inside of the inverter/  The installing orientation of the inverter/converter must be
converter is charged. Doing so may cause an electric shock. correct.
 Before wiring or inspection, check that the LED display of the  Foreign conductive objects must be prevented from entering the
operation panel is OFF. Any person who is involved in wiring or inverter/converter. That includes screws and metal fragments or
inspection shall wait for 10 minutes or longer after the power other flammable substance such as oil.
supply has been cut off, and check that there are no residual  As the inverter/converter is a precision instrument, do not drop
or subject it to impact.
voltage using a tester or the like. The capacitor is charged with
 The surrounding air temperature must be between 10 and +50°C
high voltage for some time after power OFF, and it is dangerous. (non-freezing). Otherwise, the inverter/converter may be
 The inverter/converter must be earthed (grounded). Earthing damaged.
(grounding) must conform to the requirements of national and  The ambient humidity must be 95% RH or less (non-
local safety regulations and electrical code (NEC section 250, condensing). Otherwise, the inverter/converter may be
IEC 61140 class 1 and other applicable standards). damaged. (For the details, refer to page 24.)
 Any person who is involved in wiring or inspection of this product  The temporary storage temperature (applicable to a short limited
shall be fully competent to do the work. time such as a transportation time) must be between -20 and
 The inverter/converter must be installed before wiring. +65°C. Otherwise, the inverter/converter may be damaged.
 The inverter/converter must be used indoors (without corrosive
Otherwise, electric shock or injury may result.
gas, flammable gas, oil mist, dust and dirt etc.) Otherwise, the
 Do not touch the setting dial or keys with wet hands. Doing so inverter/converter may be damaged.
may cause an electric shock.  The inverter/converter must be used at an altitude of 2500 m or
 Do not subject the cables to scratches, excessive stress, heavy less. Vibration should not exceed 2.9 m/s2 at 10 to 55 Hz in X, Y,
loads or pinching. Doing so may cause an electric shock. and Z directions. Otherwise, the inverter/converter may be
 Do not change the cooling fan while the inverter/converter is damaged. (For the details, refer to page 24.)
powered ON as it is dangerous.  If halogens (including fluorine, chlorine, bromine, and iodine)
 Do not touch the printed circuit board or handle the cables with contained in fumigants for wood packages enter this product, the
wet hands. Doing so may cause an electric shock. product may be damaged. Prevent the entry of fumigant
residuals or use an alternative method such as heat disinfection.
 Fire prevention Note that sterilization or disinfection of wood packages should
be performed before packing the product.
CAUTION Test operation
 The inverter/converter must be installed on a nonflammable wall  Before starting the test operation, confirm or adjust the
without holes. Installing it to or near flammable material can parameter settings. Failure to do so may cause some machines
cause a fire. to make unexpected motions.
 If the inverter/converter has become faulty, its power must be  Before starting the operation, check the wiring of each peripheral
switched OFF. A continuous flow of large current may cause a device. Faulty wiring may cause some machines to make
fire. expected motions.
 Be sure to perform daily and periodic inspections as specified in
the Instruction Manual. If the inverter/converter is used without
any inspection, a burst, breakage, or a fire may occur.

Safety instructions 1
 WARNING CAUTION
Usage
Usage  Do not repeatedly start or stop the inverter/converter with a
 Stay away from the equipment when the retry function is set as magnetic contactor on its input side. Doing so may shorten the
the inverter/converter will restart suddenly after its output shutoff.
life of the inverter/converter.
 Depending on the function settings, the inverter/converter does
 Use a noise filter or other means to minimize the
not stop its output even when the STOP/RESET key on the electromagnetic interference with other electronic equipment
operation panel is pressed. To prepare for it, provide a separate
used nearby the inverter/converter.
circuit and switch (to turn OFF the power or to take other
 As all parameters return to their initial values after the Parameter
actions) for an emergency stop. clear or All parameter clear is performed, the parameters must
 Be sure to turn OFF the start (STF/STR) signal before clearing
be set again as required before the operation is started.
the fault as the inverter/converter will restart the motor suddenly
 Before running an inverter/converter which have been stored
after a fault is cleared. and not been operated for a long period, perform an inspection
 Use only the specified inverters for the connection with the
and a test operation.
converter. Connection of any other electrical equipment to the
 To avoid damage due to static electricity, static electricity in your
output of the converter may damage the equipment. body must be discharged before you touch the inverter/
 Do not modify the inverter/converter.
converter.
 Do not remove any part which is not instructed to be removed in
Emergency stop
the Instruction Manual. Doing so may lead to a failure or  A safety backup such as an emergency brake must be provided
damage. for devices or equipment in a system to prevent hazardous
conditions in case of failure of the inverter/converter or its
external controller.
 If the breaker installed on the input side of the inverter/converter
trips, check for wiring faults (short circuits etc.) and damage to
internal parts of this product.
 When any fault occurs, take an appropriate corrective action,
then reset the inverter/converter, and resume the operation.
Maintenance, inspection and parts replacement
 Do not carry out a megger (insulation resistance) test on the
control circuit of the inverter/converter.
Disposal
 This product must be treated as industrial waste.

General instruction
 For clarity, illustrations in this Instruction Manual may be drawn
with covers or safety guards removed. Ensure all covers and
safety guards are properly installed prior to starting operation.

2 Safety instructions
CONTENTS
1 OUTLINE 7
1.1 Pre-operation instructions 8
1.1.1 Unpacking and checking the product................................................................................................................9
1.1.2 Component names .........................................................................................................................................10

1.2 Pre-installation instructions for the FR-A8AVP 11

1.3 Installing the FR-A8AVP 11

2 INVERTER-TO-CONVERTER CONVERSION 13
2.1 Conversion flowchart 14

2.2 Conversion procedure 15

2.2.1 Preparation for the conversion........................................................................................................................15
2.2.2 Inverter-to-converter conversion (Pr.328).......................................................................................................16
2.2.3 Application of stickers supplied with the product ............................................................................................17

2.3 Troubleshooting 18

3 INSTALLATION AND WIRING 19

3.1 Peripheral devices 20
3.1.1 Converter and peripheral devices...................................................................................................................20

3.2 Selection of breaker, magnetic contactor, and fuse 21

3.3 Compatible inverter for the high power factor converter 22

3.3.1 Applicable inverter capacity ............................................................................................................................22
3.3.2 Inverter parameter settings.............................................................................................................................23

3.4 Installation of the converter and enclosure design 24

3.4.1 Converter installation environment .................................................................................................................24
3.4.2 Cooling system types for converter enclosure................................................................................................26
3.4.3 Installation of the converter.............................................................................................................................27
3.4.4 Protruding the heat sink through a panel........................................................................................................28

3.5 Installation of stand-alone options for converter 29

3.5.1 Installation of the reactor 1 (FR-A8BL1) and reactor 2 (FR-A8BL2)...............................................................29
3.5.2 Installation of the phase detection transformer box (FR-A8VPB) ...................................................................30
3.5.3 Installation of the filter capacitor (FR-A8BC) ..................................................................................................33
3.5.4 Installation of the dedicated circuit parts for inrush current protection (FR-A8MC) ........................................34
3.5.5 Terminals of stand-alone options for the converter ........................................................................................36

3.6 Main circuit terminal specification 37

3.6.1 Details on the main circuit terminals ...............................................................................................................37
3.6.2 Main circuit terminal block layout....................................................................................................................37
3.6.3 Cable size of the main circuit terminals and the earth (ground) terminal........................................................38

3.7 Wiring of main circuit 40

3.7.1 Connection diagram (when using with the FR-A800 series)...........................................................................40
3.7.2 Wiring of main circuit ......................................................................................................................................42

CONTENTS 3
 3.8 Earthing (Grounding) precautions 47

3.9 Wiring of control circuit 49

3.9.1 Details on the control circuit terminals............................................................................................................ 49
3.9.2 Control logic (sink/source) change ................................................................................................................. 53
3.9.3 Wiring of control circuit ................................................................................................................................... 55
3.9.4 Wiring precautions.......................................................................................................................................... 57
3.9.5 When using separate power supplies for the control circuit and the main circuit........................................... 58
3.9.6 When supplying 24 V external power to the control circuit............................................................................. 59

3.10 Communication connectors and terminals 61

3.10.1 PU connector.................................................................................................................................................. 61
3.10.2 USB connector ............................................................................................................................................... 62
3.10.3 RS-485 terminal block .................................................................................................................................... 63

3.11 Connection of the converter and multiple inverters 64

4 PRECAUTIONS FOR USE OF THE CONVERTER 67

4.1 Features of the converter 68

4.2 Harmonic suppression guidelines in Japan 69

4.3 Techniques and measures for electromagnetic compatibility (EMC) 72

4.3.1 Countermeasures against inverter-generated EMI ........................................................................................ 72
4.3.2 Selecting the rated sensitivity current for the earth leakage circuit breaker ................................................... 78

5 PARAMETERS 79
5.1 Operation panel (FR-DU08) 80
5.1.1 Components of the operation panel ............................................................................................................... 80
5.1.2 Basic Operation of the Operation Panel......................................................................................................... 81
5.1.3 Digital characters and their corresponding printed equivalents...................................................................... 82
5.1.4 Changing the parameter setting value ........................................................................................................... 82

5.2 Parameter unit (FR-PU07) 83

5.2.1 Components of the parameter unit................................................................................................................. 83
5.2.2 Description of keys ......................................................................................................................................... 83
5.2.3 Monitoring function ......................................................................................................................................... 84
5.2.4 Function menu................................................................................................................................................ 85

5.3 Parameter List 87

5.4 Parameter details 90

5.4.1 Setting the phase detection transformer box (FR-A8VPB) input voltage ....................................................... 90
5.4.2 Power frequency input to the converter (Pr.1 and Pr.2) ................................................................................. 91
5.4.3 Operation selection for the SOF signal and the OH signal (Pr.8 and Pr.9) .................................................... 91
5.4.4 DC voltage control (Pr.22, Pr.23, Pr.80, Pr.81, and Pr.157) .......................................................................... 92
5.4.5 Instantaneous power failure detection hold signal (Pr.44) ............................................................................. 93
5.4.6 Terminal FM (pulse train output) and terminal AM/CA (analog output) reference (Pr.49, Pr.51, Pr.53, Pr.55,
Pr.56).............................................................................................................................................................. 94
5.4.7 Monitor item selection on operation panel or via communication................................................................... 96
5.4.8 Monitor display selection for terminals FM/CA and AM................................................................................ 100
5.4.9 Operation selection at instantaneous power failure (Pr.57) ......................................................................... 101

4 CONTENTS
 5.4.10 Retry function (Pr.65, Pr.67 to Pr.69) ...........................................................................................................102
5.4.11 Reset selection / disconnected PU detection / PU stop selection (Pr.75) ....................................................104
5.4.12 Parameter write disable selection (Pr.77).....................................................................................................106
5.4.13 Current control (Pr.82 and Pr.83) .................................................................................................................107
5.4.14 Power factor adjustment function (Pr.84 and Pr.85).....................................................................................107
5.4.15 Wiring and configuration of PU connector ....................................................................................................108
5.4.16 Wiring and configuration of RS-485 terminals ..............................................................................................110
5.4.17 Initial setting of operation via communication ...............................................................................................113
5.4.18 Initial settings and specifications of RS-485 communication ........................................................................113
5.4.19 Mitsubishi inverter protocol (computer link communication) .........................................................................115
5.4.20 PU display language selection......................................................................................................................126
5.4.21 Disabling the setting dial and keys on the operation panel...........................................................................126
5.4.22 Input terminal function selection (Pr.178 to Pr.189)......................................................................................127
5.4.23 Operation selection for the RDY signal and the RSO signal (Pr.190 and Pr.191)........................................128
5.4.24 Output terminal function selection (Pr.192 to Pr.194, Pr.196) ......................................................................129
5.4.25 Cooling fan operation selection ....................................................................................................................131
5.4.26 Converter parts life display (Pr.255 to Pr.257)..............................................................................................132
5.4.27 Maintenance timer alarm ..............................................................................................................................134
5.4.28 Detection of control circuit temperature ........................................................................................................135
5.4.29 Adjustment of terminal FM/CA and terminal AM...........................................................................................136
5.4.30 Free parameter .............................................................................................................................................139
5.4.31 Beep control..................................................................................................................................................140
5.4.32 PU contrast adjustment ................................................................................................................................140
5.4.33 Initiating a protective function .......................................................................................................................140
5.4.34 Simple clock function ....................................................................................................................................141

5.5 Parameter clear / All parameter clear on the operation panel 142

5.6 Copying and verifying parameters on the operation panel 143

5.6.1 Parameter copy ............................................................................................................................................143
5.6.2 Parameter verification...................................................................................................................................145

5.7 Checking parameters changed from their initial values (initial value change list) 146

6 PROTECTIVE FUNCTIONS 147

6.1 Converter fault and indication 148

6.2 Reset method for the protective functions 148

6.3 Check and clear of the fault history 149

6.4 List of indications 151

6.5 Causes and corrective actions 153

6.6 Check first when you have a trouble 162

7 PRECAUTIONS FOR MAINTENANCE AND

INSPECTION 163
7.1 Inspection item 164
7.1.1 Daily inspection.............................................................................................................................................164
7.1.2 Periodic inspection........................................................................................................................................164
7.1.3 Daily and periodic inspection list...................................................................................................................165

CONTENTS 5
 7.1.4 Continuity test............................................................................................................................................... 166
7.1.5 Cleaning ....................................................................................................................................................... 166
7.1.6 Replacement of parts ................................................................................................................................... 167
7.1.7 Removal and reinstallation of the control circuit terminal block ................................................................. 170

7.2 Measurement of main circuit voltages, currents, and powers 172

7.2.1 Insulation resistance test using megger ....................................................................................................... 173
7.2.2 Withstand voltage test .................................................................................................................................. 173

8 SPECIFICATIONS 175
8.1 Converter rated specifications 176

8.2 Common specifications 177

8.3 Outline dimension drawings 178

8.3.1 Reactor 1 (FR-A8BL1).................................................................................................................................. 178
8.3.2 Reactor 2 (FR-A8BL2).................................................................................................................................. 178
8.3.3 Phase detection transformer box (FR-A8VPB-H)......................................................................................... 179
8.3.4 Filter capacitor (FR-A8BC) ........................................................................................................................... 180
8.3.5 Dedicated circuit parts for inrush current protection (FR-A8MC) ................................................................. 181
8.3.6 Parameter unit.............................................................................................................................................. 184

8.4 Compatible options 184

9 CONVERTER-TO-INVERTER CONVERSION 185

9.1 Converter-to-inverter conversion 186
9.1.1 Preparation for the conversion ..................................................................................................................... 186
9.1.2 Converter-to-inverter conversion (Pr.328).................................................................................................... 187
9.1.3 Removal of the stickers ................................................................................................................................ 187

APPENDIX 189
Appendix 1 Instruction code list............................................................................................................... 190
Appendix 2 Instructions for compliance with the EU Directives........................................................... 192
Appendix 3 Instructions for UL and cUL ................................................................................................. 194
Appendix 4 Instructions for EAC.............................................................................................................. 195
Appendix 5 Restricted Use of Hazardous Substances in Electronic and Electrical Products ........... 196
Appendix 6 Referenced Standard (Requirement of Chinese standardized law).................................. 196

6 CONTENTS
 1 OUTLINE

This chapter explains the outline of this product.

Always read the instructions before use.

1.1 Pre-operation instructions .......................................................8

1.2 Pre-installation instructions for the FR-A8AVP .....................11
1.3 Installing the FR-A8AVP ...........................................................11

<Abbreviations>
DU ........................... Operation panel (FR-DU08) 1
PU ........................... Operation panel (FR-DU08) or parameter unit (FR-PU07)
Inverter .................... Mitsubishi Electric inverter
Converter ................ High power factor converter converted from the inverter by using the FR-A8AVP
Pr. ........................... Parameter number (Number assigned to function of the inverter or the converter)

<Trademarks>
• Ethernet is a registered trademark of Fuji Xerox Corporation in Japan.
• Microsoft and Visual C++ are registered trademarks of Microsoft Corporation in the United States and other
countries.
• Other company and product names herein are the trademarks and registered trademarks of their respective
owners.

<Notes on descriptions in this Instruction Manual>

Connection diagrams in this Instruction Manual appear with the control logic of the input terminals as sink logic,
unless otherwise specified. (For the control logic, refer to page 53.)

OUTLINE 7
Pre-operation instructions

1.1 Pre-operation instructions

Incorrect handling may cause the equipment to operate improperly or reduce its life considerably, and in the worst case, the
converter and the connected inverter to be damaged. Please handle the converter properly in accordance with the information
on each section as well as the precautions and instructions of this manual.

Features of the product

Install the plug-in option FR-A8AVP on a separated converter type inverter and set parameters. The inverter will be converted
into a high power factor converter. To use the converter, use the options specifically made for the converter: the phase
detection transformer box, filter reactor, reactor for PWM control, filter capacitor, and inrush current limit resistor. The
converter can be changed back to the inverter.

NOTE
• To use the phase-synchronized bypass switching function, refer to the other instruction manual which is included with the FR-
A8AVP which is dedicated to the function (manual number: IB-0600809ENG).

Option lineup for the converter

To use the converter, be sure to use the following options according to the capacity of the converter. Check the model and
quantity of each option. (The abbreviated names are used in this document to facilitate descriptions.)
Quantity
Converter capacity
Option model Component model Name Abbreviation (FR-A842-[])
07700 08660 09620 10940 12120
(15K) (355K) (400K) (450K) (500K)
FR-A8VPB-H FR-A8VPB-H Phase detection transformer box 1 1 1 1 1
FR-A8BL1-H315K FR-A8BL1-H315K 1 — — — —
FR-A8BL1-H355K FR-A8BL1-H355K — 1 — — —
FR-A8BL1-H400K FR-A8BL1-H400K Dedicated filter reactor Reactor 1 — — 1 — —
FR-A8BL1-H450K FR-A8BL1-H450K — — — 1 —
FR-A8BL1-H500K FR-A8BL1-H500K — — — — 1
FR-A8BL2-H315K FR-A8BL2-H315K 1 — — — —
FR-A8BL2-H355K FR-A8BL2-H355K — 1 — — —
Dedicated reactor for
FR-A8BL2-H400K FR-A8BL2-H400K Reactor 2 — — 1 — —
PWM control
FR-A8BL2-H450K FR-A8BL2-H450K — — — 1 —
FR-A8BL2-H500K FR-A8BL2-H500K — — — — 1
FR-A8BC-H400K FR-A8BC-H400K 1 1 1 — —
Dedicated filter capacitor Filter capacitor
FR-A8BC-H500K FR-A8BC-H500K — — — 1 1
Dedicated circuit parts for inrush current protection —
BKO-CA2573H01 Inrush current limit resistor (without thermostat) 3 3 — — —
BKO-CA2573H11 Inrush current limit resistor (with thermostat) 3 3 — — —
Stepdown transformer for power source of magnetic
BKO-CA2571H01 1 1 — — —
contactor (400 to 220 V)
FR-A8MC-H355K
S-N400 AC200V 2A2B Inrush current limit magnetic contactor 3 3 — — —
SR-T5 AC200V 5A Buffer relay 1 1 — — —
MYQ4Z AC200/220 Mini relay 1 1 — — —
PYF14T Mini relay terminal block 1 1 — — —
PYC-A1 Mini relay clip 2 2 — — —
Dedicated circuit parts for inrush current protection —
BKO-CA2573H01 Inrush current limit resistor (without thermostat) — — 6 6 6
BKO-CA2573H11 Inrush current limit resistor (with thermostat) — — 3 3 3
Stepdown transformer for power source of magnetic
BKO-CA2571H01 — — 1 1 1
contactor (400 to 220 V)
FR-A8MC-H500K
S-N400 AC200V 2A2B Inrush current limit magnetic contactor — — 3 3 3
SR-T5 AC200V 5A Buffer relay — — 1 1 1
MYQ4Z AC200/220 Mini relay — — 1 1 1
PYF14T Mini relay terminal block — — 1 1 1
PYC-A1 Mini relay clip — — 2 2 2

8 OUTLINE
 Pre-operation instructions

1.1.1 Unpacking and checking the product

Take the product out of the package, check the product name, and confirm that the product is as you ordered and intact.
The FR-A8AVP is a plug-in option for the FR-A802 inverters (separated converter type).

Product confirmation
Check the enclosed items.
Plug-in option: 1 Mounting screw (M3 × 8 mm): 2 Spacer: 2 • Converter sticker sheet: 1
(Refer to page 11.) (Refer to page 11.) (Refer to page 16 and page 187.)

R4/L14 S4/L24 T4/L34

CONVERTER
C172D692HXX ∗1

 Not used.

SERIAL (serial number) check

The inverter/converter switching function is available for the inverter/converter which satisfies both of the following conditions.
• The inverter has two rating plates: one for the inverter, and the other for the high power factor converter.
• The inverter/converter has the following SERIAL (printed on the rating plate and the package).
Applicable model Country of origin indication SERIAL
FR-A842-12120(500K) 7Z or later
MADE in Japan
FR-A842-07700(315K) to 10940(450K) 86 or later
FR-A842-07700(315K) to 12120(500K) MADE in China 87 or later
1
 7 Z  
Symbol Year Month Control number
 The SERIAL consists of one symbol, two characters indicating the production year and month, and six characters indicating the control number.
The last digit of the production year is indicated as the Year, and the Month is indicated by 1 to 9, X (October), Y (November), or Z (December).

OUTLINE 9
Pre-operation instructions

Rating plate (High power factor converter)

Inverter model 02'(/)5$

Input rating ,1387;;;;;

Output rating 287387;;;;;

81,7237,21:25.6$6&219(57(5
SERIAL 6(5,$/;;;;;;;;;

Country of origin 0$'(,1;;;;;

Rating plate (Inverter)

Inverter model 02'(/)5$

Input rating ,1387;;;;;

Output rating 287387;;;;;

SERIAL 6(5,$/;;;;;;;;;

Country of origin 0$'(,1;;;;;

NOTE
• Ethernet communication is not available when the FR-A802-E inverter has been converted to the high power factor converter.

1.1.2 Component names

Front view (a) Rear view (d)
(a) (a)
Terminal layout SW1 (c)

(f) SERIAL
(e)
Ver.

(a) (a)
RS2
TS2

RSO
SE2
RYA
R2

T2

(b) (b)
(a)

Refer to
Symbol Name Description
page
a Mounting hole Fix the option to the inverter (converter) with the screws, or insert spacers. 11
Used to connect the converter (converted from the inverter) to the phase detection
b Terminal block 49
transformer box and to an inverter.
Switch (SW1) for
c Do not change from the initially-set status (OFF: O
). —
manufacturer setting N

d Connector Connected to the option connector of the inverter (converter). 11

e SERIAL (serial number) The SERIAL of the FR-A8AVP is printed. —
f Version information The product version of the FR-A8AVP is printed. —

10 OUTLINE
 Pre-installation instructions for the FR-A8AVP

1.2 Pre-installation instructions for the FR-

A8AVP
Check that the inverter's input power and the control circuit power are both OFF.

CAUTION
 Do not install or remove the FR-A8AVP while the inverter power is ON. Doing so may damage the
inverter or plug-in option.
 To avoid damage due to static electricity, static electricity in your body must be discharged before
you touch the product.

1.3 Installing the FR-A8AVP

(1) Remove the inverter front cover.
Inverter option connector
(2) Insert spacers into the two mounting holes that will not be tightened
with the option mounting screws (see the following figure).
(3) Fit the connector of the FR-A8AVP to the guide of the connector of Spacer
the inverter, and insert the option as far as it goes.
(4) Fasten the FR-A8AVP onto the inverter by fastening the mounting
screws into the holes on the both sides (tightening torque: 0.33 to
0.40 N·m). If the connector is not inserted deep enough, the screws
Spacer
cannot be tightened properly. Check the connector.

Example of installation to connector 1

Mounting screw Spacer

Connector 3

Spacer Mounting screw

Spacer Spacer

Connector 2∗1 Connector 1

Spacer Spacer

Mounting screw Mounting screw

Insertion positions for screws and spacers

 The option connector 2 on the FR-A800-E inverters (separated converter type) is not available for use because it is occupied by the Ethernet
board which is pre-installed in the initial status. To install the FR-A8AVP to the option connector 2, remove the Ethernet board.

OUTLINE 11
Installing the FR-A8AVP

NOTE
• When installing/removing an option, hold the sides of the circuit board. Do not press on the parts on the circuit board. Stress
applied to the parts by pressing, etc. may cause a failure.
• Take caution not to drop screws during installation and removal of the option.
• Two or more of the same plug-in options cannot be connected. When multiple options are installed, priority is given to option
connectors 1, 2 and 3 on the inverter in this order, and options having a lower priority do not function.
• When the inverter cannot recognize the FR-A8AVP due to improper installation or any other reason, the protective function
(E.1 to E.3) is activated and the inverter cannot be operated. The indication to be shown depends on the position (option
connector 1 to 3) used.

Mounted position Fault indication

Option connector 1

Option connector 2

Option connector 3

• When removing the plug-in option, remove the two screws on the left and right, then pull it straight out. Pressure applied to
the connector and to the option board may break the option.

12 OUTLINE
 2 INVERTER-TO-
CONVERTER
CONVERSION

This chapter explains how to convert the inverter into a high power factor
converter.
Always read the instructions before use.

2.1 Conversion flowchart ...............................................................14

2.2 Conversion procedure..............................................................15
2.3 Troubleshooting........................................................................18
2

INVERTER-TO-CONVERTER CONVERSION 13
Conversion flowchart

2.1 Conversion flowchart

Conversion
on procedure
Conversion p
procedure

Preparation
(main circuit: power-OFF, (a)
control circuit: power-ON)

Conversion (b)
(Pr.328 setting change)

Control circuit: power-OFF (c)

Wiring to other devices

(inverter and converter (d)
options)

Main circuit: power-ON (e)

Refer to
Symbol Description
page
Preparation for the inverter-to-converter conversion.
(a) Be sure to turn OFF the main circuit power of the inverter, and turn ON the control circuit power of the inverter 15
(supplied via terminals R1/L11 and S1/L21 from a separate power source).
(b) Change the setting of Pr.328 in the inverter to convert the inverter into a high power factor converter. 16
(c) Turn OFF the control circuit power. 16
(d) Connect an inverter and the converter options to the converter. 40
(e) After the wiring is completed, turn ON the main circuit power of the converter. —

14 INVERTER-TO-CONVERTER CONVERSION
 Conversion procedure

2.2 Conversion procedure

This section explains the procedure to convert the inverter to the high factor converter.

2.2.1 Preparation for the conversion

Before starting the conversion, check the following conditions of the inverter (all the conditions must be satisfied).

Check the following while the control circuit power of the inverter is OFF.
• The FR-A8AVP is installed in one of the option connectors (1 to 3). (Refer to page 11.)
• All of the main circuit terminals are left open.
• Terminals R1/L11 and S1/L21 are used to supply power to the control circuit of the inverter.
• No USB memory device is connected.

Check the following while the control circuit power of the inverter is ON.
• The inverter is in the PU operation mode (not in the External/PU combined operation mode 1 or 2).
• The PLC function is disabled (Pr.414 = "0").
• The inverter is in normal state and its operation is stopped (its output is shut off). (No protective function is activated.)

NOTE
• When terminal +24 is used to supply power to the control circuit of the inverter, the conversion to the converter is disabled.
• Sequence programs stored in the inverter for the PLC function will be cleared after the conversion. Be sure to back up the
programs before conversion.

INVERTER-TO-CONVERTER CONVERSION 15
Conversion procedure

2.2.2 Inverter-to-converter conversion (Pr.328)

Setting
Pr. Name Initial value Description
range
Change the setting of this parameter according to the
328 Inverter/converter
— 0 to 9999 predetermined inverter-to-converter conversion
E310 switching procedure.

Inverter-to-converter conversion procedure

The following shows the setting procedure for the inverter-to-converter conversion.
Enter the following values in Pr.328 in the following order. If the procedure from step 1 to step 3 is not followed, the parameter
setting will be cleared (the Pr.328 setting returns to its initial value "0"). In that case, restart the procedure from step 1.

1 Enter "3100".
Check that "3100" is displayed for Pr.328.

2 Enter "5010".
Check that "5010" is displayed for Pr.328.

3 Enter "1000".
The inverter-to-converter conversion starts when "1000" is entered. The communication status LED indicator
starts blinking. (The following figure shows the location of the LED indicator.)
The LED indicator stays ON after the conversion is completed.
(It takes about 300 seconds to complete the conversion.)

Communication status LED indicator

NOTE
• After entering "1000", do not operate the PU until the LED indicator stays ON.

4 Reset the control circuit power.

After the reset, "9999" will be displayed for Pr.328.
Functions as an inverter will not be available after this point.

5 After checking that "9999" is displayed for Pr.328, enter "1".

Inverter reset and All parameter clear will start automatically. After the reset, converter functions are available.

6 Press the setting dial on the operation panel (FR-DU08) and check that "CNV" (converter) is
displayed.

NOTE
• If the control circuit power is turned OFF once and then turned ON again, conversion may restart depending on the timing of
power OFF.

16 INVERTER-TO-CONVERTER CONVERSION
 Conversion procedure

2.2.3 Application of stickers supplied with the

product
Attach the "CONVERTER" sticker and the main circuit terminal stickers ("R4/L14", "S4/L24", and "T4/L34" stickers) supplied
with the FR-A8AVP for indication of the converter.
• Attach the "CONVERTER" sticker to the front cover of the converter as shown in the following figure.

CONVERTER

• Check that the power of the converter is OFF and open the terminal block cover. Attach the main circuit terminal stickers
over the existing "U", "V", and "W" stickers as shown in the following figure.

R4/L14 S4/L24 T4/L34

INVERTER-TO-CONVERTER CONVERSION 17
Troubleshooting

2.3 Troubleshooting
Condition Possible cause Countermeasure
Preparation for the conversion has not been Complete the preparation.
Pr.328 cannot be overwritten.
completed. (Refer to page 15.)
Follow the procedure from step 1 to step 3
The Pr.328 setting returns to "0 (initial The procedure from step 1 to step 3 was not
properly.
value)". followed properly.
(Refer to page 16.)
The inverter is in the process of the Contact your sales representative if the
The communication status LED will not conversion (the conversion takes 300 communication status LED indicator remains
change from blinking to constantly lit. seconds after Pr.328 has been set to blinking (does not become solid) even after a
"1000"). lapse of 300 seconds.
• Press the setting dial on the operation
panel (FR-DU08) and check the indication.
Checking of the current state (inverter or
— (Refer to page 16.)
converter) is required.
• Check the Pr.328 setting. (Refer to page
16.)
"11" is displayed for Pr.328 after the
— Please contact your sales representative.
conversion.

18 INVERTER-TO-CONVERTER CONVERSION
 3 INSTALLATION AND
WIRING

This chapter explains the installation and the wiring of the converter.
Always read the instructions before use.

3.1 Peripheral devices ....................................................................20

3.2 Selection of breaker, magnetic contactor, and fuse ..............21
3.3 Compatible inverter for the high power factor converter .....22
3.4 Installation of the converter and enclosure design...............24
3.5 Installation of stand-alone options for converter ..................29
3.6 Main circuit terminal specification ..........................................37
3.7 Wiring of main circuit ...............................................................40 3
3.8 Earthing (Grounding) precautions ..........................................47
3.9 Wiring of control circuit ...........................................................49
3.10 Communication connectors and terminals ............................61
3.11 Connection of the converter and multiple inverters..............64

INSTALLATION AND WIRING 19

Peripheral devices

3.1 Peripheral devices

3.1.1 Converter and peripheral devices

Three-phase AC power supply
Use within the permissible power
supply specifications of the converter.

Molded case circuit breaker

(MCCB), earth leakage circuit
breaker (ELB), or fuse
The breaker must be selected
carefully since an inrush current flows
in the converter at power ON.
Converter
Install and wire correctly.
Magnetic contactor (MC) Do not install a molded case circuit
Install the MC to ensure safety. breaker (MCCB) on the main circuit
Do not use this MC to start and stop the cables between the inverter and the
converter and the inverter. Doing so will converter (terminals P to P and
shorten the life of the inverter and the terminals N to N).
converter.

Plug-in option (FR-A8AVP)

Connect the option with the phase
detection transformer box.
R2 RS2 TS2 T2
R4/L14 S4/L24 T4/L34 P/+ N/-

Fuse
Phase detection transformer box Install the MC to ensure safety.
(FR-A8VPB) Select a fuse according to the
Check that its capacity is appropriate connected motor capacity.
for the capacity of the converter. (Refer to page 21.)
(Refer to page 8 and 30.)

Inverter
Check that the inverter is
compatible with the high power
factor converter. (Refer to page 22
for compatible inverter.)
Select an inverter according to the
Reactor 1 (FR-A8BL1) capacity of the converter.
Check that its capacity is appropriate The control logic (sink logic/source
for the capacity of the converter. logic) of the converter and the
(Refer to page 8 and 29.) inverter must be matched.
(Refer to page 53.)

Filter capacitor (FR-A8BC) and

dedicated circuit parts for inrush
current protection (FR-A8MC)
Check that their capacity is appropriate
for the capacity of the converter. Motor
(Refer to page 8 and 33.) Install the appropriate capacity
motor according to the capacities
of inverter, converter, etc.

Reactor 2 (FR-A8BL2)
Check that its capacity is appropriate Earth
Devices on the inverter's output side
for the capacity of the converter. (ground)
Do not install a power factor correction
(Refer to page 8 and 29.) capacitor or surge suppressor on the inverter's
output side.
When installing a molded case circuit breaker
on the output side of the inverter, contact the
manufacturer of the molded case circuit
breaker.
Earth (ground)
Always earth (ground) the converter, converter
options, inverter, and motor.

20 INSTALLATION AND WIRING

 Selection of breaker, magnetic contactor, and fuse

3.2 Selection of breaker, magnetic contactor,

and fuse
Circuit breakers and magnetic contactors
Check the model of the converter. The correct breaker and magnetic contactor must be installed with the appropriate
converter capacity.
Refer to the following table to select the appropriate breaker and magnetic contactor.
High power factor Molded case circuit breaker (MCCB) Magnetic contactor
converter model or earth leakage circuit breaker (NF, NV type) (MC)
FR-A842-07700(315K) 700 A S-N600
FR-A842-08660(355K) 800 A S-N600
FR-A842-09620(400K) 900 A S-N800
FR-A842-10940(450K) 1000 A S-N400 (3 in parallel)
FR-A842-12120(500K) 1200 A S-N400 (3 in parallel)

 Select an MCCB according to the power supply capacity.

Install one MCCB per converter. MCCB Converter Inverter IM
(For the use in the United States or Canada, refer to page 194, and select the MCCB Converter Inverter IM
appropriate fuse.)
 The magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stops during motor driving, the electrical durability is 25 times.
If using an MC for emergency stop during motor driving or using it on the motor side during commercial power supply operation, select an MC
with the class AC-3 rated current for the rated motor current.

NOTE
• When the breaker installed at the converter's input line is shut off, check for the wiring fault (short circuit), damage to internal
parts of the converter, etc. The cause of the trip must be identified and removed before turning ON the power of the breaker.

Fuse
Installation of a fuse is recommended between the converter and an inverter. Select a fuse according to the capacity of the
connected motor. When using a motor, of which the capacity is smaller than the inverter capacity by two ranks or more, select
the fuse with the capacity that is one rank lower than the inverter capacity. (For the details, refer to page 45.)
• Fuse selection table
Motor capacity (kW) Fuse rating (A) Model 3
6.9 URD 232 TDF 1600 or
315 1600
6.9 URD 31 TTF 0800 × 2 (parallel connection)
6.9 URD 232 TDF 1800 or
355 1800
6.9 URD 32 TTF 0900 × 2 (parallel connection)
6.9 URD 232 TDF 1800 or
400 1800
6.9 URD 32 TTF 0900 × 2 (parallel connection)
450 2500 6.9 URD 33 TTF 1250 × 2 (parallel connection)
500 2700 6.9 URD 32 TTF 0900 × 3 (parallel connection)

 Manufacturer: Mersen Japan KK

Contact: Sun-Wa Technos Corporation
 When installing several fuses in parallel, leave a space of 12 mm or more between the fuses.

NOTE
• Install fuses across terminals P/+ and P/+, and across terminals N/- and N/- of the converter and an inverter.
• Fuses are not required when the converter is used in combination with a FR-A842-07700(315K) to 12120(500K) inverter,
which has internal fuses.

• Estimated lifespan of fuses

Estimated
Components Replacement method
lifespan
Fuse 10 years Replace by new one

 Estimated lifespan for when the yearly average surrounding air temperature is 50°C (without corrosive gas, flammable gas, oil mist, dust and dirt etc.).

NOTE
• If the fuse melts down, wiring failure such as a short circuit may be the cause. Find out the cause and remove it before replacing the fuse.

INSTALLATION AND WIRING 21

Compatible inverter for the high power factor converter

3.3 Compatible inverter for the high power

factor converter
3.3.1 Applicable inverter capacity
The required converter capacity differs by the multiple rating selection setting of the inverter.
Refer to the following table for the connectable inverter capacities when connecting one inverter to a high power factor
converter. (The combination with the inverter not specified in the table is not applicable.)
: Applicable.
-: Usable as a common converter or regenerative converter, but the harmonic suppression effect decreases.
: Not applicable.

NOTE
• For details of the inverter capacity, refer to the rating specifications in the Instruction Manual of the inverter.
 Example: FR-A820
00046 00077 00105
Model FR-A820-[]
0.4K 0.75K 1.5K
SL D 0 .7 5 1 .5 2 .2

When the inverter capacity and the applicable motor capacity are equal
(FR-A800 (ND rating), FR-F800 (LD rating), and 700 series inverters)
Inverter capacity
132K
Converter capacity
or 160K 185K 220K 250K 280K 315K 355K 375K 400K 450K 500K 530K 560K
lower
FR-A842-07700(315K) - -            
FR-A842-08660(355K) - -            
FR-A842-09620(400K) - - -           
FR-A842-10940(450K) - - - -          
FR-A842-12120(500K) - - - -          

When the applicable motor capacity is higher than the inverter capacity
(FR-A800 (LD rating), FR-A800 (SLD rating), and FR-F800 (SLD rating))
Refer to the table above to check the applicability of the converter. When the capacity of a motor to be installed is larger than
the converter capacity, read the "inverter capacity" in the table above as the applicable "motor capacity".

When the applicable motor capacity is lower than the inverter capacity
(FR-A800 (HD rating))
Inverter capacity
132K
Converter capacity
or 160K 185K 220K 250K 280K 315K 355K 400K 450K 500K 560K
lower
FR-A842-07700(315K) - -          
FR-A842-08660(355K) - -          
FR-A842-09620(400K) - - -         
FR-A842-10940(450K) - - - -        
FR-A842-12120(500K) - - - -        

22 INSTALLATION AND WIRING

 Compatible inverter for the high power factor converter

3.3.2 Inverter parameter settings

When using the converter with the inverter, some inverter parameters must be set. The parameter settings differ by the
inverter series. The parameter settings differ by the inverter series.
For the parameters and inverters not listed below, refer to the Instruction Manual of the inverter.

Pr.30 Regenerative function V/F control Other than V/F control

Inverter series
selection Pr.19 Base frequency voltage Pr.83 Rated motor voltage
FR-A800, FR-F800 2, 102
0 (initial value),
FR-E700, FR-F700PJ, 2 (when the automatic restart after Rated motor voltage
FR-D700 instantaneous power failure
function is enabled)

INSTALLATION AND WIRING 23

Installation of the converter and enclosure design

3.4 Installation of the converter and enclosure

design
When designing or manufacturing an enclosure, determine the structure, size, and device layout by fully considering the
conditions such as heat generation of the contained devices and the operating environment. The converter uses many
semiconductor devices. To increase reliability and prolong the life of the product, operate the converter in an environment that
sufficiently satisfies the standard environmental specifications.

3.4.1 Converter installation environment

The following table lists the standard specifications of the converter installation environment. Using the converter in an
environment that does not satisfy the conditions deteriorates the performance, shortens the life, and causes a failure. Refer to
the following points, and take adequate measures.

Standard environmental specifications of the converter

Item Description
Measurement
position
Surrounding air 5 cm Converter 5 cm
-10 to +50°C (non-freezing)
temperature
Measurement 5 cm
position
Surrounding air With circuit board coating: 95% RH or less (non-condensing)
humidity Without circuit board coating: 90% RH or less (non-condensing)
Storage temperature -20 to +65°C
Atmosphere Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Altitude 2500 m or lower
Vibration 2.9 m/s2 or less at 10 to 55 Hz (directions of X, Y, Z axes)
 Temperature applicable for a short time, for example, in transit.
 For the installation at an altitude above 1000 m, consider a 3% reduction in the rated current per 500 m increase in altitude.

Temperature
The permissible surrounding air temperature of the converter is between -10 and +50°C. Always operate the converter within
this temperature range. Operation outside this range will considerably shorten the service lives of the semiconductors, parts,
capacitors and others. Take the following measures to keep the surrounding air temperature of the converter within the
specified range.
(a) Measures against high temperature
• Use a forced ventilation system or similar cooling system. (Refer to page 26.)
• Install the enclosure in an air-conditioned electric chamber.
• Block direct sunlight.
• Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a heat source.
• Ventilate the area around the enclosure well.
(b) Measures against low temperature
• Provide a space heater in the enclosure.
• Do not power OFF the converter. (Keep the start signal of the inverter OFF.)
(c) Sudden temperature changes
• Select an installation place where temperature does not change suddenly.
• Avoid installing the converter near the air outlet of an air conditioner.
• If temperature changes are caused by opening/closing of a door, install the converter away from the door.

Humidity
Operate the converter within the ambient air humidity range of 45 to 90% (up to 95% with circuit board coating). Too high
humidity will pose problems of reduced insulation and metal corrosion. On the other hand, too low humidity may cause a
spatial electrical breakdown. The humidity conditions for the insulation distance defined in JEM 1103 standard "Insulation
Distance from Control Equipment" is 45 to 85%.

24 INSTALLATION AND WIRING

 Installation of the converter and enclosure design

(a) Measures against high humidity

• Make the enclosure enclosed, and provide it with a hygroscopic agent.
• Provide dry air into the enclosure from outside.
• Provide a space heater in the enclosure.
(b) Measures against low humidity
Air with proper humidity can be blown into the enclosure from outside. Also when installing or inspecting the unit, discharge
your body (static electricity) beforehand, and keep your body away from the parts and patterns.
(c) Measures against condensation
Condensation may occur if frequent operation stops change the in-enclosure temperature suddenly or if the outside air
temperature changes suddenly.
Condensation causes such faults as reduced insulation and corrosion.
• Take the measures against high humidity in (a).
• Do not power OFF the converter. (Keep the start signal of the inverter OFF.)

Dust, dirt, oil mist

Dust and dirt will cause such faults as poor contacts, reduced insulation and cooling effect due to the moisture-absorbed
accumulated dust and dirt, and in-enclosure temperature rise due to a clogged filter. In an atmosphere where conductive
powder floats, dust and dirt will cause such faults as malfunction, deteriorated insulation and short circuit in a short time.
Since oil mist will cause similar conditions, it is necessary to take adequate measures.

Countermeasure
• Place the converter in a totally enclosed enclosure.
Take measures if the in-enclosure temperature rises. (Refer to page 26.)
• Purge air.
Pump clean air from outside to make the in-enclosure air pressure higher than the outside air pressure.

Corrosive gas, salt damage

If the converter is exposed to corrosive gas or to salt near a beach, the printed board patterns and parts will corrode or the
relays and switches will result in poor contact.
In such places, take the measures given in the previous paragraph.

Explosive, flammable gases

As the converter is non-explosion proof, it must be contained in an explosion-proof enclosure. In places where explosion may
3
be caused by explosive gas, dust or dirt, an enclosure cannot be used unless it structurally complies with the guidelines and
has passed the specified tests. This makes the enclosure itself expensive (including the test charges). The best way is to
avoid installation in such places and install the converter in a non-hazardous place.

High altitude
Use the converter at an altitude of within 2500 m. For use at an altitude above 1000 m, consider a 3% reduction in the rated
current per 500 m increase in altitude.
If it is used at a higher place, it is likely that thin air will reduce the cooling effect and low air pressure will deteriorate dielectric
strength.

Vibration, impact
The vibration resistance of the converter is up to 2.9 m/s2 at 10 to 55 Hz frequency and 1 mm amplitude for the directions of
X, Y, Z axes. Applying vibration and impacts for a long time may loosen the structures and cause poor contacts of connectors,
even if those vibration and impacts are within the specified values.
Especially when impacts are applied repeatedly, caution must be taken because such impacts may break the installation feet.

Countermeasure
• Provide the enclosure with rubber vibration isolators.
• Strengthen the structure to prevent the enclosure from resonance.
• Install the enclosure away from the sources of the vibration.

INSTALLATION AND WIRING 25

Installation of the converter and enclosure design

3.4.2 Cooling system types for converter enclosure

From the enclosure that contains the converter, the heat of the converter and other equipment (inverter, transformers,
reactors, lamps, resistors, etc.) and the incoming heat such as direct sunlight must be dissipated to keep the in-enclosure
temperature lower than the permissible temperatures of the in-enclosure equipment including the converter.
The cooling systems are classified as follows in terms of the cooling calculation method.
(a) Cooling by natural heat dissipation from the enclosure surface (totally enclosed type)
Cooling by heat sink (aluminum fin, etc.)
Cooling by ventilation (forced ventilation type, pipe ventilation type)
Cooling by heat exchanger or cooler (heat pipe, cooler, etc.)

Cooling system Enclosure structure Comment

This system is low in cost and generally used, but the

Natural ventilation
enclosure size increases as the converter capacity increases.
(enclosed type / open type) Converter
This system is for relatively small capacities.

Natural
Being a totally enclosed type, this system is the most
Natural ventilation (totally appropriate for hostile environment having dust, dirt, oil mist,
enclosed type) etc. The enclosure size increases depending on the converter
Converter
capacity.

Heat sink This system has restrictions on the heat sink mounting
Heat sink cooling Converter position and area. This system is for relatively small
capacities.

This system is for general indoor installation. This is

Forced ventilation appropriate for enclosure downsizing and cost reduction, and
Forced air Converter
often used.

Heat pipe
This system is a totally enclosed type, and is appropriate for
Heat pipe
Converter enclosure downsizing.

26 INSTALLATION AND WIRING

 Installation of the converter and enclosure design

3.4.3 Installation of the converter

Placement of the converter

• Install the converter on a strong surface securely with screws.

• Leave enough clearances and take cooling measures.
• Avoid places where the converter is subjected to direct sunlight, high temperature and high humidity.
• Install the converter on a nonflammable wall surface.
• When encasing multiple converters in an enclosure, install them in parallel as a cooling measure.
• For heat dissipation and maintenance, keep clearance between the converter and the other devices or enclosure surface.
The clearance below the converter is required as a wiring space, and the clearance above the converter is required as a
heat dissipation space.
• When designing or building an enclosure for the converter, carefully consider influencing factors such as heat generation of
the contained devices and the operating environment.

Clearances (front view) Clearances (side view)

20 cm or more
3
5 cm
or
more
10 cm 10 cm ∗1
Converter
or or
more more

Vertical

Allow clearance. 20 cm or more

 For replacing the cooling fan, 30 cm of space is necessary in front of the converter. Refer to page 167 for fan replacement.

Installation orientation of the converter

Install the converter on a wall as specified. Do not mount it horizontally or in any other way.

Above the converter

Heat is blown up from inside the converter by the small fan built in the unit. Any equipment placed above the converter should
be heat resistant.

INSTALLATION AND WIRING 27

Installation of the converter and enclosure design

Arrangement of multiple inverters and converters

When multiple inverters and converters are placed in the
same enclosure, generally arrange them horizontally as
shown in the figure (a). When it is inevitable to arrange
Converter Inverter Inverter Inverter
them vertically to minimize space as shown in the figure
(b), take such measures as to provide guides since heat
Guide Guide Guide
generated in the units in bottom row can increase the
temperatures in the units in top row, causing the failure of
Converter Converter
the units in top row.

When mounting multiple inverters and converters, fully

Enclosure Enclosure
take caution not to make the surrounding air temperature
(a) Horizontal arrangement (b) Vertical arrangement
of the inverter and the converter higher than the
permissible value by providing ventilation and increasing Arrangement of multiple inverters and converters
the enclosure size.

Placement of the ventilation fan and converter

Heat generated in the converter is blown up from the bottom of
the unit as warm air by the cooling fan. When installing a
ventilation fan for that heat, determine the place of ventilation
fan installation after fully considering an air flow. (Air passes
through areas of low resistance. Make an airway and airflow
plates to expose the converter to cool air.) Converter Converter

<Good example> <Bad example>

Arrangement of the ventilation fan and converter

NOTE
• To remove or reinstall the front cover or the operation panel (FR-DU08) of the converter, refer to the FR-A802 Instruction
Manual (Hardware) as the procedure is the same as that for the inverter.

3.4.4 Protruding the heat sink through a panel

When encasing the converter to an enclosure, the heat generated in the enclosure can be greatly reduced by protruding its
heat sink through the rear panel of the enclosure. To protrude the heat sink, refer to the FR-A802 Instruction Manual
(Hardware) as the procedure is the same as that for the inverter.

28 INSTALLATION AND WIRING

 Installation of stand-alone options for converter

3.5 Installation of stand-alone options for

converter
3.5.1 Installation of the reactor 1 (FR-A8BL1) and
reactor 2 (FR-A8BL2)
Model confirmation
Before installing the reactor 1 and reactor 2, check the model on their rating plate (see the following figure) to avoid confusing
them with each other as they look very similar. Refer to page 178 to check the rating plate position.
Rating plate example: Reactor 1 (FR-A8BL1)
AC REACTOR
MODEL
FR-A8BL1-H500K Model

DANGER CAUTION

Clearances
As the reactors generate heat, leave sufficient space around them.

5 cm or more

5 cm or more 5 cm or more

Installation place
Install the reactors on nonflammable material. Installing them directly on flammable material will cause a fire.

Surrounding environment
Avoid places where the reactors are subjected to oil mist, flammable gases, fluff, dust, dirt, etc.
Choose a clean place for installation, or protect it from suspended substances using a dust filter or the like.

INSTALLATION AND WIRING 29

Installation of stand-alone options for converter

Installation orientation
To prevent looseness, install the reactors on a horizontal surface securely with screws or bolts.
Do not install them on a vertical surface. Install them on a mounting stand which can withstand its weight.

NOTE
• As the charged sections of the reactors are uncovered, fully protect them to prevent ground fault and electric shock.
• Intrusion of wire offcuts or dust into the cooling fan of the reactors can cause a failure or malfunction.
Keep clean environment for the reactors.

3.5.2 Installation of the phase detection transformer

box (FR-A8VPB)
Checking the Phase detection transformer box rating plate
Before installing the transformer box, check the values to be set in Pr.1344 and Pr.1345 described on its rating plate, and take
a note of them. The same values must be set in Pr.1344 and Pr.1345 of the converter. (Refer to page 90.)

Clearances
10 cm or more

5 cm or more 5 cm or more 5 cm or more

10 cm or more

Installation place
Install the transformer box on nonflammable material. Installing it directly on flammable material will cause a fire.

Surrounding environment
Avoid places where the transformer box is subjected to oil mist, flammable gases, fluff, dust, dirt, etc.
Install the transformer box in a clean place or protect it from suspended substances.

30 INSTALLATION AND WIRING

 Installation of stand-alone options for converter

Installation orientation
Install the transformer box in a vertical position.

Vertical

Removal and reinstallation of the cover

 Removal
• Loosen the mounting screws of the cover. • Pull out the cover to remove it.

Front cover
Front cover

INSTALLATION AND WIRING 31

Installation of stand-alone options for converter

 Reinstallation
• Align the screw holes on the cover with the holes • Fix the cover with the mounting screw
on the transformer box, and place the cover back (tightening torque: 1.7 N m).
into position.

NOTE
• Fully make sure that the front cover has been reinstalled securely. Always tighten the mounting screws of the cover.
• The capacity plate is placed on the cover, and the rating plate is on the remainder of the transformer box. For reinstallation,
check the serial number on the capacity plate against the one on the rating plate to make sure they are identical with each
other.

Wiring method
Cut small slits in the rubber grommets mounted on the underside of the transformer box, and pass the cables through the slits.

NOTE
• To satisfy IP20 protection requirements, note the following points for wiring of the transformer box.
- Do not cut slits in the rubber grommets which are not used for wiring.
- Do not use the transformer box with the rubber grommets removed.

32 INSTALLATION AND WIRING

 Installation of stand-alone options for converter

3.5.3 Installation of the filter capacitor (FR-A8BC)

Clearances
As the filter capacitor generates heat, leave sufficient space around them.

10 cm or more

10 cm or more 10 cm or more

Installation place
Install the filter capacitor on nonflammable material. Installing it directly on flammable material will cause a fire.

Surrounding environment
Avoid places where the filter capacitor is subjected to oil mist, flammable gases, fluff, dust, dirt, etc.
Install the filter capacitor in a clean place or protect it from suspended substances.

Installation of fixing brackets (FR-A8BC-H400K)

Two fixing brackets come with the FR-A8BC-H400K filter capacitor. Hang the hook of fixing brackets on top of both sides of
the capacitor as shown in the following figure. Fasten the capacitor with screws to a stand through the mounting holes on the
brackets.

Fixing bracket

3
Mounting hole

Installation orientation
To prevent looseness, install the filter capacitor on a horizontal surface securely with screws or bolts.
Do not install it on a vertical surface. Install it on a mounting stand which can withstand its weight.

NOTE
• As the charged sections of the filter capacitor is uncovered, fully protect it to prevent ground fault and electric shock.

INSTALLATION AND WIRING 33

Installation of stand-alone options for converter

3.5.4 Installation of the dedicated circuit parts for

inrush current protection (FR-A8MC)
Inrush current limit resistor
 Clearances
As the inrush current limit resistor generates heat, leave sufficient space around them.

3 cm or more
3 cm or more 3 cm or more

 Installation place
Install the resistor on nonflammable material. Installing directly on or near a flammable material will cause a fire.

 Surrounding environment
Avoid places where the resistor is subjected to oil mist, flammable gases, fluff, dust, dirt, etc.
Install the resistor in a clean place or protect it from suspended substances.
Do not place a flammable material near the resistor.

 Installation orientation
To prevent looseness, install the resistor on a horizontal or vertical surface securely with screws or bolts.

34 INSTALLATION AND WIRING

 Installation of stand-alone options for converter

MC power supply stepdown transformer

 Clearances
As the stepdown transformer generates heat, leave sufficient space around them.

10 cm or more

10 cm or more 10 cm or more

 Installation place
Install the stepdown transformer on nonflammable material. Installing it directly on flammable material will cause a fire.

 Surrounding environment
Avoid places where the stepdown transformer is subjected to oil mist, flammable gases, fluff, dust, dirt, etc.
Install the stepdown transformer in a clean place or protect it from suspended substances.

 Installation orientation
To prevent looseness, install the stepdown transformer on a horizontal or vertical surface securely with screws or bolts.

NOTE
3
• As the charged sections of the stepdown transformer is uncovered, fully protect it to prevent ground fault and electric shock.

INSTALLATION AND WIRING 35

Installation of stand-alone options for converter

3.5.5 Terminals of stand-alone options for the

converter
Reactor 1
Terminal symbol Description
R/L1, S/L2, T/L3 Connected to the commercial power supply.
Connected to the reactor 2. Between two reactors, the filter capacitor and the dedicated circuit parts for inrush
R2/L12, S2/L22, T2/L32
current protection must be installed.
R5, S5 Connected to the cooling fan power output terminals on the stepdown transformer for power source of MC.
If reactor 1 overheats, the circuit will open (thermostat output) between TP1 and TP2.
• TP1:
TP1, TP2 Connected to the converter terminal to which the LOH signal is assigned.
• TP2:
Connected to terminal TP3 of the reactor 2.

Earthing (grounding) of the reactor 1. This must be earthed (grounded).

Reactor 2
Terminal symbol Description
Connected to the reactor 1. Between two reactors, the filter capacitor and the dedicated circuit parts for inrush
R3/L13, S3/L23, T3/L33
current protection must be installed.
R4/L14, S4/L24, T4/L34 Connected to the converter.
R5, S5 Connected to the cooling fan power output terminals on the stepdown transformer for power source of MC.
If reactor 2 overheats, the circuit will open (thermostat output) between TP3 and TP4.
• TP3:
TP3, TP4 Connected to terminal TP2 of the reactor 1.
• TP4:
Connected to terminal SD of the converter.

Earthing (grounding) of the reactor 2. This must be earthed (grounded).

Filter capacitor
Terminal symbol Description
R2/L12, S2/L22, T2/L32 Connected to the output terminals of the reactor 1 and the input terminals of the inrush current limit resistor.

Earthing (grounding) of the filter capacitor. This must be earthed (grounded).

Phase detection transformer box

Rated
Terminal symbol Description
specification
R Input terminal for detection of the R-phase voltage of the system power supply. Maximum
S Input terminal for detection of the S-phase voltage of the system power supply. permissible input
T Input terminal for detection of the T-phase voltage of the system power supply. voltage: 506 VAC
Output terminal for the analog signal used for the R-S detection. Maximum output
R2
Isolated from the main circuit. voltage: 26 VAC
RS2 Common terminal for terminal R2. —
Output terminal for the analog signal used for the T-S detection. Maximum output
T2
Isolated from the main circuit. voltage: 26 VAC
TS2 Common terminal for terminal T2. —
Earthing (grounding) of the phase detection transformer box. This must be earthed
—
(grounded).

36 INSTALLATION AND WIRING

 Main circuit terminal specification

3.6 Main circuit terminal specification

3.6.1 Details on the main circuit terminals

Terminal symbol Description Refer to page
R4/L14, S4/L24, T4/L34 Connected to the reactor 2. —
Connected to terminals P/+ and N/- in the initial status. To retain the fault display and
R1/L11, S1/L21 58
fault output, remove the jumpers and apply external power through these terminals.
P/+, N/- Connected to the inverter terminals P/+ and N/-. 40

For earthing (grounding) of the converter chassis. This must be earthed (grounded). 47

3.6.2 Main circuit terminal block layout

FR-A842-07700(315K) to 12120(500K)
R1/L11 S1/L21
Charge lamp

Jumper

N/- R4/L14 T4/L34

P/+ S4/L24

3
To inverter
To reactor 2

INSTALLATION AND WIRING 37

Main circuit terminal specification

3.6.3 Cable size of the main circuit terminals and the

earth (ground) terminal
Select cables of recommended gauge size to ensure that the voltage drop will be 2% or less.
The following table shows a selection example for the wiring length of 20 m.
• Converter
Cable gauge
Tightening AWG/ PVC cables, etc.
Terminal HIV cables, etc. (mm2)
Model torque Crimp MCM (mm2)
screw
FR-A842-[] N·m terminal R4/L14, Earthing R4/L14, R4/L14, Earthing
size P/+, N/-
 S4/L24, (grounding) S4/L24, S4/L24, (grounding)

T4/L34 cable T4/L34 T4/L34 cable
07700(315K) M12 (M10) 46 (24) 150-12 2 × 150 2 × 150 100 2 × 300 2 × 150 150
08660(355K) M12 (M10) 46 (24) C2-200 2 × 200 2 × 200 100 2 × 350 2 × 185 2 × 95
09620(400K) M12 (M10) 46 (24) C2-200 2 × 200 2 × 200 100 2 × 400 2 × 185 2 × 95
10940(450K) M12 (M10) 46 (24) C2-250 2 × 250 2 × 250 100 2 × 500 2 × 240 2 × 120
12120(500K) M12 (M10) 46 (24) C2-250 2 × 250 3 × 200 2 × 100 2 × 500 2 × 240 2 × 120

• Reactor 1 (FR-A8BL1)
Cable gauge
HIV cables, etc. PVC cables, etc.
AWG/MCM
(mm2) (mm2)
Tightening
Terminal R/L11, R/L11, R/L11,
Model torque Crimp
screw S/L21, S/L21, S/L21,
FR-A8BL1-[] N·m terminal
size T/L31, T/L31, T/L31,

R2/L12, R2/L12, R2/L12,
S2/L22, S2/L22, S2/L22,
T2/L32 T2/L32 T2/L32
H315K M12 (M8) 46 (24) 150-12 2 × 150 2 × 300 2 × 150
H355K M12 (M8) 46 (24) C2-200 2 × 200 2 × 350 2 × 185
H400K M12 (M8) 46 (24) C2-200 2 × 200 2 × 400 2 × 185
H450K M12 (M8) 46 (24) C2-250 2 × 250 2 × 500 2 × 240
H500K M12 (M8) 46 (24) C2-250 2 × 250 2 × 500 2 × 240

• Reactor 2 (FR-A8BL2)
Cable gauge
HIV cables, etc. PVC cables, etc.
AWG/MCM
(mm2) (mm2)
Tightening
Terminal R3/L13, R3/L13, R3/L13,
Model torque Crimp
screw S3/L23, S3/L23, S3/L23,
FR-A8BL2-[] N·m terminal
size T3/L33, T3/L33, T3/L33,

R4/L14, R4/L14, R4/L14,
S4/L24, S4/L24, S4/L24,
T4/L34 T4/L34 T4/L34
H315K M12 (M8) 46 (24) 150-12 2 × 150 2 × 300 2 × 150
H355K M12 (M8) 46 (24) C2-200 2 × 200 2 × 350 2 × 185
H400K M12 (M8) 46 (24) C2-200 2 × 200 2 × 400 2 × 185
H450K M12 (M8) 46 (24) C2-250 2 × 250 2 × 500 2 × 240
H500K M12 (M8) 46 (24) C2-250 2 × 250 2 × 500 2 × 240

38 INSTALLATION AND WIRING

 Main circuit terminal specification

• Filter capacitor (FR-A8BC)

Cable gauge
HIV cables, etc. PVC cables, etc.
AWG/MCM
(mm2) (mm2)
Tightening
Terminal R2/L12, R2/L12, R2/L12,
Model torque Crimp
screw S2/L22, S2/L22, S2/L22,
FR-A8BC-[] N·m terminal
size T2/L32, T2/L32, T2/L32,

R3/L13, R3/L13, R3/L13,
S3/L23, S3/L23, S3/L23,
T3/L33 T3/L33 T3/L33
H400K M12 (M5) 20 (3) 60-12 60 1/0 50
H500K M12 (M8) 20 (12) 80-12 80 1/0 70

 It is the gauge of the cable with the continuous maximum permissible temperature of 90°C or higher (LMFC (heat resistant flexible cross-linked
polyethylene insulated cable), etc.). It assumes a surrounding air temperature of 50°C or lower and in-enclosure wiring.
 It is the gauge of the cable with continuous maximum permissible temperature of 90°C (THHN cable). It assumes a surrounding air temperature
of 40°C or lower and in-enclosure wiring.
(For the use in the United States or Canada, refer to page 194.)
 It is the gauge of the cable with continuous maximum permissible temperature of 90°C (XLPE cable). It assumes a surrounding air temperature
of 40°C or lower and in-enclosure wiring.
(Selection example mainly for use in Europe.)
 Screw size for earthing (grounding) is indicated in parenthesis. (Refer to page 47 for earthing (grounding).)
 If a cable thinner than the recommended cable size is used, it may not be protected by the DC fuse. (Refer to page 21 for the fuse selection.)

INSTALLATION AND WIRING 39

Wiring of main circuit

3.7 Wiring of main circuit

• Perform wiring securely to allow compliance with the harmonic suppression guidelines issued by the former Ministry of
International Trade and Industry (currently the Ministry of Economy, Trade and Industry). Incorrect wiring will cause a fault
indication, failure, or damage.
• Refer to the Instruction Manual of each inverter for the wiring of the inverter. Special attention must be paid to the wiring
length and cable size.

3.7.1 Connection diagram (when using with the FR-

A800 series)
Connection method differs by the inverter series. Perform connection by referring to the Instruction Manual of the inverter.

(d) (f)
Reactor1 Reactor2
(FR-A8BL1) (FR-A8BL2) Converter Inverter
Thermostat Thermostat
∗9 ∗7 (NC) × 3 (NC) × 3 (c)
TP1 TP2
(b)
Inrush current limit MCs TP3 TP4 (e) (h)
MCCB MC Fuse ∗10 (a) R/L1 R2/L12 MC1 R3/L13 R4/L14 R4/L14 P+ P+
U

Power
S/L2 S2/L22 MC2 S3/L23 S4/L24 S4/L24 ∗4 ∗5 V M
T/L3 T2/L32 MC3 T4/L34 N- N-
T3/L33 T4/L34 W
Fan power Fan power R1/L11
FAN FAN terminals FAN FAN
terminals S1/L21
(100 to 240 VAC) R5 S5 (100 to 240 VAC)
R5 S5 R5 S5 R5 S5
∗8
∗8
Inrush current limit resistor
Filter capacitor with thermostat (3, NC)
(FR-A8BC) ∗8

R1/L11
S1/L21

Auxiliary contact (3, NO)

for inrush current limit MCs
MC5
Small
MC1 MC2 MC3
Mini relay
(g) MC1

Coils for
MC2
inrush current limit MCs LOH ∗2
SD
Stepdown transformer MC3 ROH ∗3
for power source of MC SD
(400 to 220 V)
R/L1 Buffer relay for MCs
S/L2 380V R5/L15 MC4 A1
S/L2 400V Bu1 C1 ∗8
S/L2 420V
S/L2 440V ∗12 S5/L25
S/L2 460V
S/L2 480V
S/L2 500V
Phase detection transformer box
(FR-A8VPB)
Plug-in option
∗8 (FR-A8AVP) ∗8
R
S ∗4 ∗6
T
R2
RS2
R2
RS2 RYA
∗11 X10∗1
TS2 TS2 RSO RES
(f) T2 T2 SE2 SD

∗8
 Use the Input terminal function selection to assign the X10 signal to a terminal. The signal is assigned to terminal MRS in the initial status. (Refer
to the Instruction Manual of the inverter.)
 The LOH signal function is assigned to terminal RT in the initial status. Set "33" in any of Pr.178 to Pr.189 (Input terminal function selection)
to assign the LOH signal to another terminal.
 The ROH signal function is assigned to terminal AU in the initial status. Set "34" in any of Pr.178 to Pr.189 (input terminal function selection)
to assign the ROH signal to another terminal.
 Confirm the correct voltage phase sequence between the converter (terminals R4/L14, S4/L24, and T4/L34) and the phase detection
transformer box (terminals R, S, and T).
 Do not install any MCCB between the inverter and the converter (P to P and N to N). Connecting opposite polarity of terminals P and N will
damage the converter and the inverter.
 Always connect terminals R2, RS2, TS2, and T2 of the FR-A8AVP installed on the converter and the identically-named terminals of the phase
detection transformer box. If the inverter is operated without connecting between the terminals, the converter will be damaged.
 Do not install an MCCB or MC between the reactor 1 input terminals (R/L1, S/L2, and T/L3) (a) and the converter input terminals (R4/L14, S4/
L24, and T4/L34) (c) except for those specified in the connection diagram. Doing so disrupts proper operation.
 Securely perform grounding (earthing) by using the grounding (earthing) terminal.
 Install an MC for each phase.
 Install the UL listed fuse (refer to page 194) on the input side of the converter to meet the UL/cUL standards.
 Always connect terminal RYA on the FR-A8AVP (installed on the converter) and the inverter terminal to which the X10 signal is assigned, and
connect terminal SE2 on the FR-A8AVP and the inverter terminal SD (terminal PC in the source logic). Failure to do so may lead to damage of
the converter.
 Select a terminal S/L2 according to the input voltage.

40 INSTALLATION AND WIRING

 Wiring of main circuit

• Symbols shown in the connection diagram on page 40 correspond to the symbols shown in the following table. For the
details of wiring of each section, refer to the page shown in the following table.)
Refer to
Symbol Wiring
page
(a) Wiring between the power supply and reactor 1 42
(b) Wiring between the reactor 1, filter capacitor, inrush current limit resistor, inrush current limit MC, and reactor 2 43
(c) Wiring between the reactor 2 and converter 44
(d) Wiring between the thermostats of the reactors 1 and 2 and the converter 44
(e) Wiring between the converter and inverter 45
Wiring between the reactor 1, stepdown transformer for power source of MC, phase detection transformer
(f) 45
box, and converter
(g) Wiring between the fans of the reactors 1 and 2 and the stepdown transformer for power source of MC 46
(h) Wiring between the converter and the control circuit power terminal on the inverter 46

NOTE
• The control logic (sink logic (initial setting) /source logic) of the converter and the inverter must be matched. The converter
does not operate properly if the control logic is not consistent with each other.
(Refer to page 53 for the switching of the control logic of the converter. Refer to the Instruction Manual of the inverter for the
switching of the control logic of the inverter.)
• Keep the wiring length between terminals as short as possible.
• When the power is distorted or falls off sharply, the reactors may generate abnormal acoustic noise. This acoustic noise is
caused by the power supply fault and not by the damage of the converter.
• Do not connect the DC reactor to the inverter when using a high power factor converter.
• When using a sine wave filter for the converter, use the MT-BSL-HC reactor.

CAUTION
 Refer to the connection diagram on page 40 to check that the reactor 1 and reactor 2 are connected
in the right places. Incorrect connection may damage the converter and reactors.
 Always connect terminal RYA of the FR-A8AVP installed on the converter and the inverter terminal to
which the X10 signal is assigned, and connect terminal SE2 of the FR-A8AVP and inverter terminal
SD (terminal PC in the source logic). Failure to do so may lead to damage of the converter.

INSTALLATION AND WIRING 41

Wiring of main circuit

3.7.2 Wiring of main circuit

(a) Wiring between the power supply and reactor 1
The following table shows the recommended cable specifications.

Model Cable gauge (mm2)

FR-A8BL1-H315K 2 × 150
FR-A8BL1-H355K 2 × 200
FR-A8BL1-H400K 2 × 200
FR-A8BL1-H450K 2 × 250
FR-A8BL1-H500K 2 × 250
The following table shows the recommended specifications for the molded case circuit breaker (MCCB), earth leakage circuit
breaker (ELB), and magnetic contactor (MC).

Reactor 1
MCCB (FR-A8BL1)
MC
R/ R2/
L1 L12
MC
Power S/ S2/
L2 L22
MC T/ T2/
L3 L32

Molded case circuit breaker

(MCCB) or earth leakage
Model Magnetic contactor (MC)
circuit breaker (ELB)
(type NF or NV)
FR-A8BL1-H315K 700 A S-N600
FR-A8BL1-H355K 800 A S-N600
FR-A8BL1-H400K 900 A S-N800
FR-A8BL1-H450K 1000 A S-N400 (3 in parallel)
FR-A8BL1-H500K 1200 A S-N400 (3 in parallel)

42 INSTALLATION AND WIRING

 Wiring of main circuit

(b) Wiring between the reactor 1, filter capacitor, inrush current limit
resistor, inrush current limit MC, and reactor 2
∗1

Reactor 1 Reactor 2
(FR-A8BL1) (FR-A8BL2) Converter
Inrush current
TP1 limit MC1 TP3
TP2 TP4

R/L1 R2/L12 R3/L13 R4/L14

R4/L14 P/+

S/L2 S2/L22 S3/L23 S4/L24

To inverter
S4/L24 N/-
∗1 T3/L33 T4/L34
T/L3 T2/L32
T4/L34

R5 R5 R5 R5
S5 S5 S5 S5
Inrush current
limit MC2

LOH
SD

Filter capacitor (FR-A8BC) ∗1

ROH
SD
Inrush current
limit MC3

MC1 MC2 MC3

MC1
13
5
MC2 Auxiliary contact for
Coils for inrush MC
inrush current limit MCs (NO) Small
current limit MCs
9
MC3
Stepdown transformer
for power source of MC 14
(400 to 220 V) Mini relay
R/L1
S/L2 380V R5/L15 MC
A1
S/L2 400V Buf
C1
S/L2 420V
S/L2 440V Buffer relay
S/L2 460V S5/L25
S/L2 480V
S/L2 500V Phase detection transformer box
(FR-A8VPB) Plug-in option
(FR-A8AVP)
R2 R2
R
RS2 RS2
S TS2 TS2
T T2 T2

3
 Inrush current limit resistor
Resistor (with thermostat)
Connect the following devices to the inrush current limit MC used for each phase of the BKO-CA2573H11
converter: one BKO-CA2573H01 (resistor without thermostat) and one BKO-CA2573H11
Thermostat output
(resistor with thermostat) for FR-A842-08660(355K) converters or lower, and two BKO-
CA2573H01 (resistor without thermostat) and one BKO-CA2573H11 (resistor with
thermostat) for FR-A842-09620(400K) converters or higher.

 Filter capacitor
Connect the filter capacitor to the output terminals of the reactor 1 and to the input terminals of the inrush current limit
MCs.
The following table shows the recommended specifications of the cables used for connection of the filter capacitor.

Model Cable gauge (mm2) Wiring length

FR-A8BC-H400K 60 Within 2 m
FR-A8BC-H500K 80 Within 2 m

INSTALLATION AND WIRING 43

Wiring of main circuit

 Inrush current limit resistor and inrush current limit MC

Short three poles of the inrush current limit MC, and use one MC for one phase of the converter.
For FR-A842-08660(355K) converters or lower, connect two inrush current limit resistors (connected in parallel) for each
MC (either resistor must have a thermostat).
For FR-A842-09620(400K) converters or higher, connect three inrush current limit resistors (connected in parallel) for
each MC (either resistor must have a thermostat) as shown in the following figure.
Connect the three MCs (with the inrush current limit resistors connected) between the output terminals of the reactor 1 and
the input terminals of the reactor 2.
MC (Example for one phase)

The following table shows the recommended specifications of the cables used for connection of each phase between the
reactors 1 and 2.
Model Cable gauge (mm2) Total wiring length
FR-A8BL1-H315K
2 × 150 10 m or less
FR-A8BL2-H315K
FR-A8BL1-H355K
2 × 200 10 m or less
FR-A8BL2-H355K
FR-A8BL1-H400K
2 × 200 10 m or less
FR-A8BL2-H400K
FR-A8BL1-H450K
2 × 250 10 m or less
FR-A8BL2-H450K
FR-A8BL1-H500K
2 × 250 10 m or less
FR-A8BL2-H500K

 Connecting resistor thermostats to the converter

Connect the thermostats of the R-phase, S-phase, and T-phase resistors in series, and connect the thermostats to the converter
terminal to which the ROH signal is assigned and to converter terminal SD, as shown in the connection diagram on page 43.
The following table shows the conditions of the cables (control signal cables).
Cable gauge (mm2) Total wiring length
0.75 to 1.25 10 m or less

(c) Wiring between the reactor 2 and converter

The following table shows the recommended cable specifications.
Reactor 2
(FR-A8BL2) Converter
R3/ R4/ R4/ P/+
L13 L14 L14
S3/ S4/ S4/
L23 L24 L24
T3/ T4/ T4/
L33 L34 L34 N/-

Model Cable gauge (mm2) Total wiring length

FR-A8BL2-H315K 2 × 150 10 m or less
FR-A8BL2-H355K 2 × 200 10 m or less
FR-A8BL2-H400K 2 × 200 10 m or less
FR-A8BL2-H450K 2 × 250 10 m or less
FR-A8BL2-H500K 2 × 250 10 m or less

(d) Wiring between the thermostats of the reactors 1 and 2 and the
converter
Connect the thermostat output terminals on the reactor 1 (terminals TP1 and TP2) and reactor 2 (terminals TP3 and TP4) and
the converter terminals (terminal to which the LOH signal is assigned and terminal SD) in series, as shown in the connection
diagram on page 43.
The following table shows the recommended cable specifications.
Cable gauge (mm2) Total wiring length
0.75 to 1.25 10 m or less

44 INSTALLATION AND WIRING

 Wiring of main circuit

(e) Wiring between the converter and inverter

Wire correctly to ensure the command transmission from the converter to the inverter.
Connection method differs by the inverter series. Perform connection by referring to the Instruction Manual of the inverter.
The following table shows the recommended wiring length.

Between terminals P and P

50 m or less
and terminals N and N
Other control signal cables 30 m or less

 For inverters other than the separated converter type of the FR-A802/F802
Conveter Inverter
∗1 inverters, installation of a fuse on each cable is recommended to prevent
R4/L14 P/+ P/+ the spread of damage caused by an inverter failure. Select a fuse
∗3
S4/L24 N/- N/- according to the motor capacity. When using a motor, of which the capacity
is smaller than the inverter capacity by two ranks or more, select the fuse
T4/L34
with the capacity that is one rank lower than the inverter capacity. Refer to
FR-A8AVP the fuse selection tables on page 21.
For connection of multiple inverters, use the same gauge cable as the
RYA X10 ∗2
inverter's power cable for wiring between the inverter main circuit terminal
Control
RSO RES (P/+ or N/-) and a junction terminal. (Refer to the Instruction Manual of the
circuit
SE2 SD inverter.)
 The function needs to be assigned to an inverter terminal to be connected
to terminal RYA of the FR-A8AVP.
 Refer to the Instruction Manual of the Inverter. Do not install any MCCB
Control circuit cable gauge 0.75 to 1.25 mm2 between the inverter and the converter (P to P and N to N).

NOTE
• Do not connect anything to power input terminals (R/L1, S/L2, and T/L3) of the inverter. Incorrect power input connection will
damage the inverter. Connecting opposite polarity of terminals P/+ and N/- will damage the inverter and the converter.
• Do not connect a DC reactor to the inverter when using the converter.

(f) Wiring between the reactor 1, stepdown transformer for power source
of MC, phase detection transformer box, and converter
As shown in the connection diagram on page 43, connect the output cables of the phase detection transformer box to the FR-
A8AVP's terminals R2, RS2, TS2, and T2 for power detection.
Select a terminal S/L2 on the stepdown transformer according to the input voltage.
Connect the output cables from the MC start command terminals (A1, C1) on the converter to the inrush current limit MCs (for
three phases) through the buffer relay for driving MCs. 3
The following table shows the recommended cable specifications.
Item Cable gauge (mm2) Total wiring length
Input cable for the stepdown transformer 2 10 m or less
Output cable for the stepdown transformer 2 10 m or less
Cable between the phase detection transformer box and
0.75 to 1.25 5 m or less
converter

NOTE
• The terminals R2, RS2, TS2, and T2 on the FR-A8AVP are control terminals used to detect power phases of the power
supply. Confirm the correct voltage phase sequence between the reactor 1 (terminals R/L1, S/L2, and T/L3) and the phase
detection transformer box (terminals R, S, and T). If these terminals are not connected correctly, the converter does not
operate properly.
• If the inverter is operated while the converter terminals R2, RS2, TS2, and T2 are not connected to the power supply, the
converter will be damaged.

INSTALLATION AND WIRING 45

Wiring of main circuit

(g) Wiring between the fans of the reactors 1 and 2 and the stepdown
transformer for power source of MC
The reactors 1 and 2 have an AC cooling fan. As shown in the connection diagram on page 43, connect the output cables
from the stepdown transformer terminals (R5/L15, S5/L25) in parallel to the fan power terminals (R5, S5) of the reactors 1 and
2.
The following table shows the recommended cable specifications.
Cable gauge (mm2) Total wiring length
2 10 m or less

NOTE
• Be sure to connect cables to the reactor cooling fans. Otherwise, the reactors may be overheated, resulting in output shutoff
or malfunction of the converter.

(h) Wiring between the converter and the control circuit power terminal
on the inverter
Connect the control power supply to the inverter terminals P/+ and N/-. The terminals R1/L11 and S1/L21 are initially
connected to the terminals P/+ and N/- with a jumper respectively.

Inverter

P/+

N/-

R1/L11

S1/L21

Cable gauge 0.75 to 2 mm2

NOTE
• To use inverters equipped with terminals R1/L11 and S1/L21 other than the separated converter type of the FR-A802 or FR-
F802 inverters, remove jumpers across main circuit terminals R/L1 and R1/L11 and across S/L2 and S1/L21 on the inverter
(refer to the Instruction Manual of the inverter).
• Terminals R1/L11 and S1/L21 on the inverter are control power input terminals. If the terminals are left open, the inverter
output may be shut off by an activation of a protective function, or the inverter may be damaged.
• If the FR-A842/F842 inverters are connected to the converter, and the inverter control power is supplied via terminals P/+ and
N/- (initial setting), a protective function (E.P24) may be activated in the inverter at the occurrence of a power shutoff.

46 INSTALLATION AND WIRING

 Earthing (Grounding) precautions

3.8 Earthing (Grounding) precautions

Always earth (ground) the converter and the converter options.

Purpose of earthing (grounding)

Generally, an electrical apparatus has an earth (ground) terminal, which must be connected to the ground before use.
An electrical circuit is usually insulated by an insulating material and encased. However, it is impossible to manufacture an
insulating material that can shut off a leakage current completely, and actually, a slight current flows into the case. The
purpose of earthing (grounding) the case of an electrical apparatus is to prevent operators from getting an electric shock from
this leakage current when touching it.
To avoid the influence of external noises, the earthing (grounding) is important to EMI-sensitive equipment that handle low-
level signals or operate very fast such as audio equipment, sensors, computers.

Earthing (grounding) system to be established

As described previously, the purpose of earthing (grounding) is roughly classified into the electrical shock prevention and the
prevention of malfunction due to the influence of electromagnetic noise. These two purposes should be clearly distinguished, and
the appropriate earth (ground) system must be established to prevent the leakage current having the converter's high frequency
components from reversing through another earth (ground) point for malfunction prevention by following these instructions:
• Make the separate earth (ground) connection for the converter and the converter options from any other devices and
equipment wherever possible.
Establishing adequate common (single-point) earth (ground) system (II) shown in the following figure is allowed only in
cases where the separate earth (ground) system (I) is not feasible. Do not make inadequate common (single-point) earth
(ground) connection (III).
As leakage currents containing many high frequency components flows into the earthing (grounding) cables of the
converter and the converter options, they must also be earthed (grounded) separately from the EMI-sensitive devices
described above.
In a high building, it may be effective to use its iron structure frames as earthing (grounding) electrode for EMI prevention in
order to separate from the earth (ground) system for electric shock prevention.
• Earthing (grounding) must conform to the requirements of national and local safety regulations and electrical codes (NEC
section 250, IEC 61140 class 1 and other applicable standards). A neutral-point earthed (grounded) power supply must be
used to be compliant with EN standard.
• Use the thickest possible earthing (grounding) cable. The earthing (grounding) cable should have the same or larger gauge 3
than the one indicated in the table on page 38.
• The earthing (grounding) point should be as close to the converter and the converter options as possible, and the earth
(ground) cable length should be as short as possible.
• Run the earthing (grounding) cable as far away as possible from the I/O wiring of the EMI-sensitive devices, and run them
in parallel in the minimum distance.

Converter Converter Converter

and converter EMI-sensitive and converter
EMI-sensitive EMI-sensitive
and converter
options devices options devices options devices

(I) Separate earthing (grounding): Good (II) Common (single-point) earthing (grounding): OK (III) Inadequate common (single-point) earthing (grounding): Bad

Earthing (grounding) of the reactors

• Use the earth (ground) terminal for earthing (grounding) of the reactor 1 and reactor 2. (Refer to page 178 to check the
earth (ground) terminal position.)
• The earthing (grounding) cable of the reactors should have the same gauge as the one for the earthing (grounding) cable of
the converter (refer to page 38).

INSTALLATION AND WIRING 47

Earthing (Grounding) precautions

Example of earthing (grounding)

Converter
Power Dedicated
circuit parts M Motor

Reactor 1

Reactor 2
supply

Inverter
for inrush
current (e)
protection
(d)
(b)
(a)

Earthing (grounding) cable

(c)

Symbol Description
Make the separate earth (ground) connection for the converter and the converter options from any other devices and
a
equipment wherever possible.
The earthing (grounding) cable should be as close as possible to the power cables, and all these cables should be wired in
b
parallel.
The converter and the converter options are allowed to have the common (single-point) earth (ground) system (unless the
c
reactors 1 and 2 are earthed (grounded) by being mounted on a panel of the enclosure).
If the inverter and the converter are installed far apart and the main circuit cables between them (P to P and N to N) are too
long to store in an enclosure, the inverter earthing (grounding) cable is allowed to be connected to the converter and run as
d close as possible to the main circuit cables in parallel.
When the cables are short enough to store in an enclosure, the inverter is allowed to join in the common (single-point) earth
(ground) connection (c).
e The motor earthing (grounding) cable is allowed be connected to the inverter earth (ground) terminal.

48 INSTALLATION AND WIRING

 Wiring of control circuit

3.9 Wiring of control circuit

3.9.1 Details on the control circuit terminals

indicates that terminal functions can be selected using Pr.178 to Pr.189 (Input terminal function selection) or
Pr.192 to Pr.194, or Pr.196 (Output terminal function selection). (Refer to page 127 and 129.)

Input signal
Converter
Terminal
Type terminal function Signal name Terminal function description Rated specification
symbol
(initial status)
No function is assigned in the initial setting.
STF — (No function) —
Use Pr.178 to assign a function to the terminal.
No function is assigned in the initial setting.
STR — (No function) —
Use Pr.179 to assign a function to the terminal.
When the SOF signal is turned ON, the converter
STP SOF Converter stop stops. The RDY signal turns OFF, and the inrush
current limit resistor MC turns ON.
No function is assigned in the initial setting.
RH — (No function) —
Use Pr.182 to assign a function to the terminal.
No function is assigned in the initial setting.
RM — (No function) —
Use Pr.181 to assign a function to the terminal.
No function is assigned in the initial setting.
RL — (No function) —
Use Pr.180 to assign a function to the terminal.
No function is assigned in the initial setting.
JOG — (No function) —
Use Pr.185 to assign a function to the terminal.
Reactor
Connected in series with all the thermostat
RT LOH overheat
output terminals on the reactors 1 and 2.
protection
Input resistance: 4.7 kΩ,
The External thermal relay input (OH) signal is
voltage when contacts
used when using the external thermal relay or
are open: 21 to 27 VDC,
External the thermal protector built into the motor to
current when contacts
MRS OH thermal relay protect the motor from overheating. When the
are short-circuited: 4 to 6
input thermal relay is activated, the inverter output is
mADC
shut off by the external thermal relay operation
Contact input

(E.OHT) of the converter.

Use this signal to reset a fault output provided
when a protective function is activated. Turn ON
3
the RES signal for 0.1 second or longer, then
turn it OFF.
RES RES Reset In the initial setting, reset is always enabled. By
changing the Pr.75 setting, reset input is enabled
only when a protective function of the converter
is activated. The converter recovers about 1
second after the reset is released.
Connect auxiliary contacts of an inrush current
Inrush current limit resistor's MC (normally-open) and inrush
limit resistor current limit resistors (with thermostat) (normally-
AU ROH
overheat closed) to stop the converter operation when
protection overheating of the resistor becomes a concern or
when a filter capacitor is faulty.
No function is assigned in the initial setting.
CS — (No function) —
Use Pr.186 to assign a function to the terminal.
Contact input
Common terminal for the contact input terminal
common
(sink logic) and terminal FM.
(sink)
Connect this terminal to the power supply
External
common terminal of a transistor output (open
transistor
SD SD collector output) device, such as a ―
common
programmable controller, in the source logic to
(source)
avoid malfunction by undesirable current.
24 VDC power Common terminal for the 24 VDC power supply
supply (terminal PC, terminal +24)
common Isolated from terminals 5 and SE.

INSTALLATION AND WIRING 49

Wiring of control circuit

Converter
Terminal
Type terminal function Signal name Terminal function description Rated specification
symbol
(initial status)
Connect this terminal to the power supply
External
common terminal of a transistor output (open
transistor
collector output) device, such as a
common
programmable controller, in the sink logic to
Contact input

(sink) Power supply voltage

avoid malfunction by undesirable current.
range: 19.2 to 28.8 VDC,
PC PC Contact input
Common terminal for contact input terminal permissible load current:
common
(source logic). 100 mA
(source)
24 VDC power
supply Can be used as a 24 VDC 0.1 A power supply.
common
Frequency setting

Analog output
Common terminal for the analog output terminals
5 5 terminal ―
AM and CA. Do not earth (ground).
common
Power supply input

Connected to a 24 V external power supply. Input voltage: 23 to 25.5

24 V external
If a 24 V external power supply is connected, VDC,
+24 +24 power supply
power is supplied to the control circuit while the input current: 1.4 A or
input
main power circuit is OFF. less

10E,
10,
2, Not used.
4,
1
 Sink logic is initially set for the FM-type converter.
 Source logic is initially set for the CA-type converter.

Output signal
Converter
Terminal
Type terminal function Terminal name Terminal function description Rated specification
symbol
(initial status)
A1 A1 MC connection Used for the control of the inrush current limit
―
C1 C1 terminal MC.
1 changeover contact output that indicates
Relay

that an inverter's protective function has been Contact capacity: 230

A2,
Relay output (fault activated and the outputs are stopped. VAC 0.3 A (power factor
B2, ALM
output) Fault: discontinuity across B and C (continuity = 0.4),
C2
across A and C), Normal: continuity across B 30 VDC 0.3 A
and C (discontinuity across A and C)
The output is in LOW state when stall Permissible load: 24
prevention is activated by the stall prevention VDC (27 VDC at
OL OL Overload alarm
function. The output is in HIGH state when maximum) 0.1 A
stall prevention is canceled. (The voltage drop is 2.8
The output is in LOW state when an V at maximum while the
Instantaneous
Open collector

IPF IPF instantaneous power failure occurs or when signal is ON.)

power failure The open collector
the undervoltage protection is activated.
transistor is ON
(conductive) in LOW
This signal is output during the converter state.
FU CVO Converter running The transistor is OFF
operation.
(not conductive) in
HIGH state.
Open collector Common terminal for terminals OL, IPF, and
SE SE ―
output common FU.

50 INSTALLATION AND WIRING

 Wiring of control circuit

Converter
Terminal
Type terminal function Terminal name Terminal function description Rated specification
symbol
(initial status)
Permissible load
FM For indication on current: 2 mA.
Pulse

FM A signal is output for

 external meters a selected monitor For full scale
item such as power 1440 pulses/s
supply frequency. Output signal: 0 ±10
The signal is not Monitor item: VDC, permissible load
Analog voltage output during a Power supply current: 1 mA
AM AM
output converter reset. frequency (initial (load impedance: 10 kΩ
Analog

The output signal is setting) or more),

proportional to the resolution: 8 bits
magnitude of the Load impedance:
CA Analog current corresponding 200 Ω to 450 Ω,
CA monitor item.
 output output signal: 0 to 20
mADC
RUN,
SU,
B1,
S1,
— Not used.
S2,
SIC,
So,
SOC
 Terminal FM is provided in the FM-type converter.
 Terminal CA is provided in the CA-type converter.
 Do not remove the shorting wires across terminals S1 and PC, across terminals S2 and PC, and across terminals SIC and SD. Doing so
disables the converter operation.

Communication
Terminal
Type Terminal name Terminal function description
symbol
RS-485 communication can be made through the PU connector (for connection on a 1:1 basis
only).
Conforming standard: EIA-485 (RS-485)
— PU connector
Transmission format: Multidrop link
Communication speed: 4800 to 115200 bps
Wiring length: 500 m
RS-485

TXD+
RS-485 terminals

Converter send
The RS-485 terminals enable the communication by RS-485.
TXD-
RXD+
Conforming standard: EIA-485 (RS-485) 3
Transmission format: Multidrop link
Converter receive
RXD- Communication speed: 300 to 115200 bps
GND Earthing Overall length: 500 m
(SG) (grounding)
Mini B connector (receptacle) Interface: conforms to USB1.1
— USB B connector The USB connection with a personal computer can be (USB2.0 full-speed compatible)
USB

established. Transmission speed: 12 Mbps

— USB A connector Not used.

INSTALLATION AND WIRING 51

Wiring of control circuit

Plug-in option FR-A8AVP

Terminal
Type Terminal name Terminal function description Rated specification
symbol
R-S detection analog signal Input terminal for the analog signal used for the R-S
R2 detection. Maximum permissible
input
Input terminal

Connected to the same-name terminal on the phase input voltage: 28 VAC

RS2 R2 common detection transformer box.
T-S detection analog signal Input terminal for the analog signal used for the T-S
T2
input detection. Maximum permissible
Connected to the same-name terminal on the phase input voltage: 28 VAC
TS2 T2 common
detection transformer box.

Permissible load: 24 VDC

(27 VDC at maximum) 0.1 A
RYA Inverter run enable Output when the inverter is ready. (The voltage drop is 2.8 V
at maximum while the
Output terminal

signal is ON.)
The open collector
transistor is ON
RSO Converter reset Output during a converter reset. (conductive) in LOW state.
The transistor is OFF (not
conductive) in HIGH state.

SE2 Open collector output common Common terminal for terminals RYA and RSO. —

CAUTION
 Always connect terminal RYA on the FR-A8AVP (installed on the converter) and the inverter terminal
to which the X10 signal is assigned, and connect terminal SE2 on the FR-A8AVP and the inverter
terminal SD (terminal PC in the source logic). Failure to do so may lead to damage of the converter.

52 INSTALLATION AND WIRING

 Wiring of control circuit

3.9.2 Control logic (sink/source) change

Change the control logic of input signals as necessary.
To change the control logic, change the jumper connector position on the control circuit board.
Connect the jumper connector to the connector pin of the desired control logic.
The control logic of input signals is initially set to the sink logic (SINK) for the FM type.
The control logic of input signals is initially set to the source logic (SOURCE) for the CA type.
(The output signals may be used in either the sink or source logic independently of the jumper connector position.)

SOURCE

SINK

Jumper connector
For sink logic

NOTE
• Make sure that the jumper connector is installed correctly.
• Never change the control logic while power is ON.

INSTALLATION AND WIRING 53

Wiring of control circuit

Sink logic and source logic

• In the sink logic, a signal turns ON when a current exits from the corresponding signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the open collector output signals.
• In the source logic, a signal turns ON when a current enters into the corresponding signal input terminal.
Terminal PC is common to the contact input signals. Terminal SE is common to the open collector output signals.

●Current flow for the I/O signal in the sink logic ●Current flow for the I/O signal in the source logic

Sink logic Source logic

PC

Current
Sink
Current
RES connector
R
RES R Source
connector

SOF
R
SOF
R

SD

Converter Inverter
Converter Inverter PC
Sink
RES connector
R
RDA X10 Source
R
connector
RDA X10
R
SE
RES
R
SE SD

Current flow

Current flow

• When using an external power supply for transistor output

Sink logic Source logic

Use terminal PC as a common terminal, and perform Use terminal SD as a common terminal, and perform
wiring as follows. (Do not connect terminal SD of the wiring as follows. (Do not connect terminal PC on the
converter with the terminal 0 V of the external power converter with the terminal of +24 V for the external power
supply. Do not install an external power source in parallel supply. Do not install an external power source in parallel
with the internal 24 VDC power source (connected to with the internal 24 VDC power source (connected to
terminals PC and SD) to use them together. Doing so may terminals PC and SD) to use them together. Doing so may
cause a malfunction in the converter due to undesirable cause a malfunction in the inverter due to undesirable
currents.) currents.)

QY40P type transistor Converter QY80 type transistor Converter

output module output module
TB1 RES PC
24 VDC
(SD)
TB1 RES 24 VDC
TB2 SOF (SD)
TB2 SOF
Constant TB17
Constant
24 VDC

voltage PC voltage
circuit circuit Fuse TB17
TB18
TB18 SD
24 VDC SD

Current flow Current flow

54 INSTALLATION AND WIRING

 Wiring of control circuit

3.9.3 Wiring of control circuit

Control circuit terminal layout
∗3 ∗3 ∗3 ∗1 ∗3 ∗3 ∗4 ∗4 ∗4 ∗4 ∗4 ∗3
2 5 4 1 F/C +24 SD So SOC SD SIC S1 S2 PC A1 B1 C1 A2 B2 C2

AM 5 10E 10 SE SE RUN SU IPF OL FU PC RL RM RH RT AU STP MRS RES SD SD STF STR JOG CS

∗3 ∗3 ∗3 ∗3 ∗2 ∗2 ∗2 ∗2 ∗2 ∗2 ∗2
 This terminal operates as terminal FM for the type FM. This terminal operates as terminal CA for the type CA.
 No function is assigned in the initial setting.
 Not used.
 Not used. Do not remove the shorting wires.

Wiring method
• Power supply connection
For the control circuit wiring, strip off the sheath of a cable, and use it with a blade terminal. For a single wire, strip off the
sheath of the wire and apply directly.
Insert the blade terminal or the single wire into a socket of the terminal.

(1) Strip off the sheath for the below length. If the length of the sheath peeled is too long, a short circuit may occur with
neighboring wires. If the length is too short, wires might come off.
Wire the stripped cable after twisting it to prevent it from becoming loose. In addition, do not solder it.
Cable sheath stripping length

10 mm
(2) Crimp the blade terminal. 3
Insert wires to a blade terminal, and check that the wires come out for about 0 to 0.5 mm from a sleeve.
Check the condition of the blade terminal after crimping. Do not use a blade terminal of which the crimping is inappropriate,
or the face is damaged.
Unstranded wire

ble
Ca

mm Wires are not inserted

.5
o0 Damaged Crumpled tip into the sleeve.
0t

• Blade terminals commercially available (as of January 2017.)

Phoenix Contact Co., Ltd.
Ferrule terminal model
Cable gauge Crimping tool
Without insulation
(mm2) With insulation sleeve For UL wire product number
sleeve
0.3 AI 0, 34-10TQ — —
0.5 AI 0,5-10WH — AI 0,5-10WH-GB
0.75 AI 0,75-10GY A 0,75-10 AI 0,75-10GY-GB
CRIMPFOX 6
1 AI 1-10RD A 1-10 AI 1-10RD/1000GB
1.25,1.5 AI 1,5-10BK A 1,5-10 AI 1,5-10BK/1000GB
0.75 (for 2 wires) AI-TWIN 2×0,75-10GY — —
 A ferrule terminal with an insulation sleeve compatible with the MTW wire which has a thick wire insulation.
 Applicable for terminals A1, B1, C1, A2, B2, and C2.

INSTALLATION AND WIRING 55

Wiring of control circuit

NICHIFU Co., Ltd.

Cable gauge Blade terminal Insulation cap Crimping tool
(mm2) product number product number product number
0.3 to 0.75 BT 0.75-11 VC 0.75 NH 69

(3) Insert the wires into a socket.

When using a single wire or stranded wires without a blade terminal,
push the open/close button all the way down with a flathead
screwdriver, and insert the wire.
Open/close button

Flathead screwdriver

NOTE
• When using stranded wires without a blade terminal, twist enough to avoid short circuit with a nearby terminals or wires.
• Never change the control logic while power is ON.
• Wire removal
Pull the wire while pushing the open/close button all
the way down firmly with a flathead screwdriver. NOTE
Open/close button • Pulling out the wire forcefully without pushing the open/close
button all the way down may damage the terminal block.
• Use a small flathead screwdriver (tip thickness: 0.4 mm / tip
Flathead screwdriver width: 2.5 mm).
If a flathead screwdriver with a narrow tip is used, terminal
block may be damaged.
Commercially available product (as of February 2016.)

Name Model Manufacturer

SZF
Driver Phoenix Contact Co., Ltd.
0- 0,4 × 2,5

• Place the flathead screwdriver vertical to the open/close

button. In case the blade tip slips, it may cause an inverter
damage or injury.

Common terminals of the control circuit (SD, PC, 5, SE)

• Terminals SD (sink logic), PC (source logic), 5, and SE are common terminals (0 V) for I/O signals. (All common terminals
are isolated from each other.) Do not earth (ground) these terminals. Avoid connecting terminal SD (sink logic) with terminal
5, terminal PC (source logic) with terminal 5, and terminal SE with terminal 5.
• In the sink logic, terminal SD is a common terminal for the contact input terminals (STF, STR, STP, RH, RM, RL, JOG, RT,
MRS, RES, AU, and CS) and the pulse train output terminal (FM). The open collector circuit is isolated from the internal
control circuit by photocoupler.
• In the source logic, terminal PC is a common terminal for the contact input terminals (STF, STR, STP, RH, RM, RL, JOG,
RT, MRS, RES, AU, CS). The open collector circuit is isolated from the internal control circuit by photocoupler.
• Terminal 5 is a common terminal for the analog output terminals AM and CA. It should be protected from external noise
using a shielded or twisted cable.
• Terminal SE is a common terminal for the open collector output terminals (OL, IPF, and FU). The contact input circuit is
isolated from the internal control circuit by photocoupler.
 Terminal FM is provided in the FM-type converter.
 Terminal CA is provided in the CA-type converter.

56 INSTALLATION AND WIRING

 Wiring of control circuit

Signal inputs by contactless switches

The contact input terminals of the converter (terminals STF, STR, STP, RH, RM, RL, JOG, RT, MRS, RES, AU, and CS) can
be controlled using a transistor instead of a contact switch as shown in the following figure.
+24 V Converter

PC
+24 V

SOF, etc.
Converter
SOF, etc.
SD R

External signal input using transistor External signal input using transistor
(sink logic) (source logic)

3.9.4 Wiring precautions

• It is recommended to use a cable of 0.75 mm2 for connection to the control circuit terminals.
• The wiring length should be 30 m (200 m for terminal FM) at the maximum.
• Use two or more parallel micro-signal contacts or twin contacts to prevent
contact faults when using contact inputs since the control circuit input signals
are micro-currents.
• To suppress EMI, use shielded or twisted control cables, or install ferrite cores
Micro signal contacts Twin contacts
to control cables, and run them away from the main and power circuits
(including the 200 V relay sequence circuit). For the cables connected to the control circuit terminals, connect their shields
to the common terminal of the connected control circuit terminal. When connecting an external power supply to terminal
PC, however, connect the shield of the power supply cable to the negative side of the external power supply. Do not directly
earth (ground) the shield to the enclosure, etc.
• Always apply a voltage to the fault output terminals (A2, B2, and C2) via a relay coil, lamp, etc.
• Separate the wiring of the control circuit away from the wiring of the main circuit.
Make cuts in rubber bush of the converter side and lead wires.

[Wiring example]
3

Rubber bush
(viewed from inside)

Make cuts along the lines on

the inside with a cutter knife.

INSTALLATION AND WIRING 57

Wiring of control circuit

3.9.5 When using separate power supplies for the

control circuit and the main circuit
Cable size for the control circuit power supply (terminals R1/L11 and S1/
L21)
• Terminal screw size: M4
• Cable gauge: 0.75 mm2 to 2 mm2
• Tightening torque: 1.5 N·m

Connection method
When the protection circuit is activated, opening of the electromagnetic contactor (MC) on the input side of the converter
results in power loss in the control circuit of the converter, disabling the fault output signal retention. Terminals R1/L11 and S1/
L21 of the control circuit are provided to hold a fault signal. To use these terminals, add the node points joined to the control
circuit power supply terminals R1/L11 and S1/L21 on the MC power cable.
Terminals R1/L11 and S1/L21 are connected to terminals P/+ and N/- with a jumper respectively. Do not connect the power
cable to incorrect terminals. Doing so may damage the converter.
[Connection diagram]

MCCB MC Reactor 1 Converter

R/L1 R2/L12 R4/L14
S/L2 S2/L22 S4/L24
T/L3 T2/L32 T4/L34

R1/L11
S1/L21
Remove
the jumper. P/+
N/-

(c)
Power terminal
block for control
Power terminal block circuit
for control circuit
R1/L11
S1/L21

(a)
(b)
(d)
(a) Remove the upper screws.
(b) Remove the lower screws.
(c) Pull the jumper toward you to remove.
(d) Connect the separate power supply cable for the control circuit to the upper terminals (R1/L11, S1/L21).

NOTE
• When using separate power supplies, always remove the jumpers connected to terminals R1/L11 and S1/L21. Failure to do
so may lead to damage of the converter.
• The voltage should be the same as that of the main control circuit when the control circuit power is supplied from other than
the input side of the MC.
• When using a separate power supply connected to terminals R1/L11 and S1/L21, the necessary power capacity is 80 VA.
• If the main circuit power is switched OFF (for 0.1 seconds or more) then ON again, the converter is reset and a fault output
will not be held.

58 INSTALLATION AND WIRING

 Wiring of control circuit

3.9.6 When supplying 24 V external power to the

control circuit
Connect the 24 V external power supply across terminals +24 and SD to turn the I/O terminal ON/OFF operation, keep the
operation panel ON, and carry out communication during communication operation even at power-OFF state of converter's
main circuit power supply. When the main circuit power supply is turned ON, the power supply changes from the 24 V external
power supply to the main circuit power supply.

Specification of the applied 24 V external power supply

Item Rated specification
Input voltage 23 to 25.5 VDC
Input current 1.4 A or less

Commercially available product (as of February 2015).

Model Manufacturer
S8JX-N05024C
Specifications: Capacity 50 W, output voltage (DC) 24 V, output current 2.1 A
Installation method: Front installation with cover

or
OMRON Corporation
S8VS-06024
Specifications: Capacity 60 W, output voltage 24 VDC, output current 2.5 A
Installation method: DIN rail installation

 For the latest information about OMRON power supply, contact OMRON corporation.

Starting and stopping the 24 V external power supply operation

• Supplying 24 V external power while the main circuit power is OFF starts the 24 V external power supply operation.
Likewise, turning OFF the main circuit power while supplying 24 V external power starts the 24 V external power supply
operation.
• Turning ON the main circuit power stops the 24 V external power supply operation and enables the normal operation.

NOTE
• When the 24 V external power is supplied while the main circuit power supply is OFF, the converter operation is disabled. 3
• In the initial setting, when the main power supply is turned ON during the 24 V external power supply operation, a reset is
performed in the converter, then the power supply changes to the main circuit power supply.

Confirming the 24 V external power supply input

• During the 24 V external power supply operation, "EV" blinks on the operation panel. The alarm lamp also blinks. Thus, the
24 V external power supply operation can be confirmed even when the operation panel is removed.
Blinking
Blinking

POWER ALARM

• During the 24 V external power supply operation, the 24 V external power supply operation (EV) signal is output. To use the
EV signal, set "68 (positive logic) or 168 (negative logic)" in any of Pr.192 to Pr.194 or Pr.196 (Output terminal function
selection) to assign the function to the output terminal.

INSTALLATION AND WIRING 59

Wiring of control circuit

Operation while the 24 V external power is supplied

• Fault history and parameters can be read and parameters can be written (when the parameter write from the operation
panel is enabled) using the operation panel keys.
• During the 24 V external power supply operation, monitoring function and signals related to the main circuit power supply
are not available (for example, monitoring the bus voltage or outputting the IPF signal is disabled).
• The alarms, which have occurred when the main circuit power supply is ON, continue to be output after the power supply is
changed to the 24 V external power supply. Perform the converter reset or turn OFF then ON the power to reset the faults.

NOTE
• Inrush current equal to or higher than the 24 V external power supply specification may flow at power-ON. Confirm that the
power supply and other devices are not affected by the inrush current and the voltage drop caused by it. Depending on the
power supply, the inrush current protection may be activated to disable the power supply. Select the power supply and
capacity carefully.
• When the wiring length between the external power supply and the converter is long, the voltage often drops. Select the
appropriate wiring size and length to keep the voltage in the rated input voltage range.
• In a serial connection of several inverters, the current increases when it flows through the inverter wiring near the power
supply. The increase of the current causes voltage to drop further. Use the converter and inverters after confirming that the
input voltage of each inverter is within the rated input voltage range. Depending on the power supply, the inrush current
protection may be activated to disable the power supply. Select the power supply and capacity carefully.
• "E.P24" may appear when the power supply start-up time is too long for the 24 V external power supply operation.
• "E.P24" may appear when the 24 V external power supply input voltage is low. Check the external power supply input.
• Do not touch the control circuit terminal block (circuit board) during the 24 V power supply operation (when conducted). Doing
so may cause an electric shock or burn.

60 INSTALLATION AND WIRING

 Communication connectors and terminals

3.10 Communication connectors and terminals

3.10.1 PU connector
Mounting the operation panel (FR-DU08) or parameter unit (FR-PU07) on
the enclosure surface
• Having an operation panel (FR-DU08) or a parameter unit (FR-PU07) on the enclosure surface is convenient. With a
connection cable, the operation panel (FR-DU08) or the parameter unit (FR-PU07) can be mounted to the enclosure
surface and connected to the converter.
Use the option FR-CB2[ ], or connectors and cables available on the market.
(To mount the operation panel (FR-DU08), the optional connector (FR-ADP) is required.)
Securely insert one end of the connection cable until the stoppers are fixed.

Parameter unit connection cable

(FR-CB2[]) (option)

Parameter unit
Operation panel
(FR-PU07) (option)
(FR-DU08)

STF FWD PU

Operation panel connector

FR-ADP (option)

NOTE
• Refer to the following table when fabricating the cable on the user side. Keep the total cable length within 20 m.

3
• Commercially available products (as of February 2015)
Name Model Manufacturer
SGLPEV-T (Cat5e/300 m)
Communication cable Mitsubishi Cable Industries, Ltd.
24AWG × 4P
RJ-45 connector 5-554720-3 Tyco Electronics

Communication operation
• Using the PU connector as a computer network port enables communication operation from a personal computer, etc.
When the PU connector is used for connection between the converter and a personal, FA, or other computer with a
communication cable, a user program can run to monitor the inverter or read and write parameters.
Communication can be performed with the Mitsubishi inverter protocol (computer link operation).
(For the details, refer to page 108.)

INSTALLATION AND WIRING 61

Communication connectors and terminals

3.10.2 USB connector

USB host
(A connector) ∗1
Communication status
Insert a flathead screwdriver LED indicator
to the slot, and push up
USB device
the cover to open.
(mini B connector)

 Not used.

USB device communication

The converter can be connected to a personal computer with a USB (ver. 1.1) cable.

Interface Conforms to USB1.1

Transmission speed 12 Mbps
Wiring length Maximum 5 m
Connector USB mini B connector (receptacle)
Power source Self-powered

62 INSTALLATION AND WIRING

 Communication connectors and terminals

3.10.3 RS-485 terminal block

Communication operation
Conforming standard EIA-485 (RS-485)
Transmission format Multidrop link
Communication speed Maximum 115200 bps
Overall length 500 m
Connection cable Twisted pair cable (4 pairs)

The RS-485 terminals enable communication operation from a personal computer, etc. When the PU connector is connected
with a personal, FA or other computer by a communication cable, a user program can run to monitor the converter or read and
write parameters.
Communication can be performed with the Mitsubishi inverter protocol (computer link operation).
For details, refer to the Instruction Manual (Detailed) of the FR-A800 inverter.

Terminating resistor switch

Initially set to "OPEN".
Set only the terminating resistor
switch of the remotest converter
to the "100 Ω" position

P5S SG SDA1 SDB1 RDA1 RDB1

(VCC) (GND) (TXD1+) (TXD1-) (RXD1+) (RXD1-)

OPEN VCC GND + TXD - + RXD -

VCC GND + TXD - + RXD -

100Ω
P5S SG SDA2 SDB2 RDA2 RDB2
(VCC) (GND) (TXD2+) (TXD2-) (RXD2+) (RXD2-)

NOTE 3
• To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.
• Lead the wires on the left side of the plug-in option for wiring of the RS-485 terminals.
• The FR-A802-E converters do not have the RS-485 terminal block.

INSTALLATION AND WIRING 63

Connection of the converter and multiple inverters

3.11 Connection of the converter and multiple

inverters
Up to 10 inverters are connectable to a single converter. Be sure to use the converter with the capacity equal to or higher than
the total capacity of inverters/motors. Additionally, the total capacity of the inverters or motors needs to be equal to or higher
than half the capacity of the converter. (Converter capacity × 1/2 ≤ total capacity of connected inverters or motors ≤ converter
capacity)
If the total inverter capacity or the total motor capacity is less than half the capacity of the converter, the converter can be used
as a common converter or a regenerative converter. However, its harmonic suppression effect reduces.
• Junction terminals and cross wiring may be required for the wiring of the multiple inverters. For the gauge of cable used
between the two junction terminals, refer to the descriptions in the following figure. Total capacity of higher-number axis
inverters must be considered for the cable selection.
• For the multiple inverter connection, place the higher capacity inverter in the lower number axis.
• It is recommended to install a fuse for each inverter according to the capacity of motor connected to the inverter as shown
in the following figure. Select a fuse according to the motor capacity.
When using a motor, of which the capacity is smaller than the inverter capacity by two ranks or more, select the fuse with
the capacity that is one rank lower than the inverter capacity. (Refer to page 21.)
• Keep the length of cables between the converter and the final axis inverter on each terminal within 50 m.

Main circuit wiring example

The following diagram shows a connection example of the FR-A842-12120(500K) converter and three inverters: the FR-
A842-07700(315K), FR-A840-04320(160K), and FR-A840-00620(22K) (497 kW capacity in total).
Junction terminal 1
Converter INV1
a P/+
FR-A842 P/+ FR-A842 315 kW
-12120 b -07700 Motor
(500K) N/- N/- (315K)
1st inverter a: The gauge of cable between the converter and the junction
c
terminal 1 is 3 × 200 mm2 according to the converter capacity.
Junction terminal 2
INV2 b: The gauge of cable between the junction terminal 1 and the
inverter is 2 × 150 mm2 because the inverter capacity is 315 kW.
P/+
160 kW
FR-A840
d -04320 Motor
N/- (160K)
c: The gauge of cable between the junction terminal 1 and the
e 2nd inverter
junction terminal 2 is 150 mm2 because the total capacity of
the second and third inverters is regarded as 185 kW
Junction terminal 3 INV3 (an approximate inverter capacity is determined by the
P/+ expression: 160 + 22 = 182 kW).
22 kW d: The gauge of cable between the junction terminal 2 and
FR-A840
f -00620 the inverter is 150 mm2 because the inverter capacity is 160 kW.
Motor
N/- (22K)
3rd inverter e: The gauge of cable between the junction terminal 2 and the
junction terminal 3 is 22 mm2 because the inverter capacity is 22W.

f: The gauge of cable between the junction terminal 3 and the

3rd axis inverter is 22 mm2 because the inverter capacity is 22 kW.

64 INSTALLATION AND WIRING

 Connection of the converter and multiple inverters

Control circuit wiring example

• For the control circuit wiring, use shielded or twisted wires, and separate the wire from the main circuit and high-voltage
circuits.
• Keep the length of cables between the converter and the final axis inverter on each terminal within 30 m.

Converter INV1
RYA X10
RSO RES
FR-A842 FR-A842
-12120 -07700
(500K) (315K)
SE2 SD

INV2
X10
RES
FR-A840
-04320
(160K)
SD

INV3
X10
RES
FR-A840
-00620
(22K)
SD

INSTALLATION AND WIRING 65

MEMO

66
 4 PRECAUTIONS FOR
USE OF THE
CONVERTER

This chapter explains the precautions for use of the converter.

Always read the instructions before use.

4.1 Features of the converter.........................................................68

4.2 Harmonic suppression guidelines in Japan...........................69
4.3 Techniques and measures for electromagnetic
compatibility (EMC) ..................................................................72

PRECAUTIONS FOR USE OF THE CONVERTER 67

Features of the converter

4.1 Features of the converter

Power supply harmonics generated from the converter part of an inverter may affect devices including a dynamo and a static
capacitor. Power supply harmonics are different from noise and leakage currents in source, frequency band and transmission
path. By using a high power factor converter, power supply harmonics may be suppressed, allowing the compliance with the
harmonic suppression guideline issued by the former Japanese Ministry of International Trade and Industry (currently the
Ministry of Economy, Trade and Industry). The converter is classified as the self-excitation three-phase bridge circuit, and
achieves K5 (the conversion factor) = 0. (It is assumed that the converter generates no harmonics.)

NOTE
• Inverter parameters must be set. The parameter settings differ by the inverter series. Refer to page 23.
● Power supply harmonic suppression effect
(Condition) Load: 100%
Power factor: 1

[When high power factor converter is not connected] [When high power factor converter is connected]

Input phase voltage Input phase voltage

Input phase current Input phase current

NOTE
• It does not mean that any harmonic components completely disappear.
• When the load is light, harmonic suppression effect declines.
• When the power supply voltage is unstable, power harmonics flow in, making the harmonic current increase.
• The power factor decreases when the setting of Pr.84 or Pr.85 is changed from the initial setting. (Refer to page 107.)

68 PRECAUTIONS FOR USE OF THE CONVERTER

 Harmonic suppression guidelines in Japan

4.2 Harmonic suppression guidelines in Japan

Harmonic currents flow from the inverter to a power receiving point via a power transformer. The Harmonic Suppression
Guidelines was established to protect other consumers from these outgoing harmonic currents.
All capacity and all models of general-purpose inverter used by specific consumers are now covered by "the Harmonic
Suppression Guidelines for Consumers Who Receive High Voltage or Special High Voltage" (hereinafter referred to as "the
Specific Consumer Guidelines").
• "Specific Consumer Guidelines"
This guideline sets forth the maximum harmonic currents outgoing from a high-voltage or especially high-voltage receiving
consumer who will install, add or renew harmonic generating equipment. If any of the maximum values is exceeded, this
guideline requires that consumer to take certain suppression measures.
• Maximum values of outgoing harmonic currents per 1 kW contract power
Received
power 5th 7th 11th 13th 17th 19th 23rd Over 23rd
voltage
6.6 kV 3.5 2.5 1.6 1.3 1.0 0.9 0.76 0.70
22 kV 1.8 1.3 0.82 0.69 0.53 0.47 0.39 0.36
33 kV 1.2 0.86 0.55 0.46 0.35 0.32 0.26 0.24

Application of the specific consumer guidelines

Install, add or
renew equipment

Calculation of equivalent
capacity total

Reference capacity or lower

Equivalent
capacity total
Above reference
capacity
Calculation of outgoing
harmonic current

Not more than More than upper limit

harmonic current
upper limit?
Harmonic suppression
Equal to or less measures necessary
than upper limit 4
Harmonic suppression
measures unnecessary

• Conversion coefficient
Classification Circuit type Conversion coefficient Ki
6-pulse converter K11 = 1
1 Three-phase bridge 12-pulse converter K12 = 0.5
24-pulse converter K13 = 0.25
Without reactor K31 = 3.4
Three-phase bridge With reactor (AC side) K32 = 1.8
3
(Capacitor smoothing) With reactor (on DC side) K33 = 1.8
With reactors (AC, DC sides) K34 = 1.4
Single-phase bridge (capacitor Without reactor K41 = 2.3
smoothing, double voltage
With reactor (AC side) K42 = 0.35
4 rectification)
Single-phase bridge (capacitor Without reactor K43 = 2.9
smoothing, full-wave rectification) With reactor (AC side) K44 = 1.3
When a high power factor converter is
5 Self-excitation three-phase bridge K5 = 0
used

PRECAUTIONS FOR USE OF THE CONVERTER 69

Harmonic suppression guidelines in Japan

• Equivalent capacity limit

Received
Reference
power
capacity
voltage
6.6 kV 50 kVA
22/33 kV 300 kVA
66 kV or more 2000 kVA

• Harmonic contents (values of the fundamental current is 100%)

Reactor 5th 7th 11th 13th 17th 19th 23rd 25th
Not used 65 41 8.5 7.7 4.3 3.1 2.6 1.8
Used (AC side) 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3
Used (DC side) 30 13 8.4 5.0 4.7 3.2 3.0 2.2
Used (AC, DC sides) 28 9.1 7.2 4.1 3.2 2.4 1.6 1.4

• Calculation of equivalent capacity P0 of harmonic generating equipment

"Equivalent capacity" is the capacity of a 6-pulse converter converted from the capacity of consumer's harmonic generating
equipment and is calculated by the following equation: If the sum of equivalent capacities is higher than the limit (refer to
page 70), harmonics must be calculated by the equation in next subheading.

P0 = Σ (Ki × Pi) [kVA]  Rated capacity: Determined by the capacity of the applied
motor and found in Table 5. The rated capacity used here
Ki: Conversion factor (Refer to page 69.)
is used to calculate the generated harmonic amount and
Pi: Rated capacity of harmonic generating is different from the power supply capacity required for
equipment[kVA] actual inverter drive.

i: Number indicating the conversion circuit type

• Calculation of outgoing harmonic current

Outgoing harmonic currents = fundamental wave current (value converted from received power voltage) × operation ratio ×
harmonic contents
• Operation ratio: actual load factor × operation time ratio during 30 minutes
• Harmonic content: Refer to page 70.
• Rated capacities and outgoing harmonic currents of inverter-driven motors
Rated Fundamental
Outgoing harmonic current converted from 6.6 kV (mA)
Applicable current wave current Rated
(No reactor, 100% operation ratio)
motor (A) converted capacity
(kW) from 6.6 kV (kVA)
400 V 5th 7th 11th 13th 17th 19th 23rd 25th
(mA)
0.4 0.81 49 0.57 31.85 20.09 4.165 3.773 2.107 1.519 1.274 0.882
0.75 1.37 83 0.97 53.95 34.03 7.055 6.391 3.569 2.573 2.158 1.494
1.5 2.75 167 1.95 108.6 68.47 14.20 12.86 7.181 5.177 4.342 3.006
2.2 3.96 240 2.81 156.0 98.40 20.40 18.48 10.32 7.440 6.240 4.320
3.7 6.50 394 4.61 257.1 161.5 33.49 30.34 16.94 12.21 10.24 7.092
5.5 9.55 579 6.77 376.1 237.4 49.22 44.58 24.90 17.95 15.05 10.42
7.5 12.8 776 9.07 504.4 318.2 65.96 59.75 33.37 24.06 20.18 13.97
11 18.5 1121 13.1 728.7 459.6 95.29 86.32 48.20 34.75 29.15 20.18
15 24.9 1509 17.6 980.9 618.7 128.3 116.2 64.89 46.78 39.24 27.16
18.5 30.7 1860 21.8 1209 762.6 158.1 143.2 79.98 57.66 48.36 33.48
22 36.6 2220 25.9 1443 910.2 188.7 170.9 95.46 68.82 57.72 39.96
30 49.0 2970 34.7 1931 1218 252.5 228.7 127.7 92.07 77.22 53.46
37 60.4 3660 42.8 2379 1501 311.1 281.8 157.4 113.5 95.16 65.88
45 73.5 4450 52.1 2893 1825 378.3 342.7 191.4 138.0 115.7 80.10
55 89.9 5450 63.7 3543 2235 463.3 419.7 234.4 169.0 141.7 98.10

70 PRECAUTIONS FOR USE OF THE CONVERTER

 Harmonic suppression guidelines in Japan

Rated Fundamental
Outgoing harmonic current converted from 6.6 kV (mA)
Applicable current wave current Rated
(With a DC reactor, 100% operation ratio)
motor (A) converted capacity
(kW) from 6.6 kV (kVA)
400 V 5th 7th 11th 13th 17th 19th 23rd 25th
(mA)
75 123 7455 87.2 2237 969 626 373 350 239 224 164
90 147 8909 104 2673 1158 748 445 419 285 267 196
110 179 10848 127 3254 1410 911 542 510 347 325 239
132 216 13091 153 3927 1702 1100 655 615 419 393 288
160 258 15636 183 4691 2033 1313 782 735 500 469 344
220 355 21515 252 6455 2797 1807 1076 1011 688 645 473
250 403 24424 286 7327 3175 2052 1221 1148 782 733 537
280 450 27273 319 8182 3545 2291 1364 1282 873 818 600
315 506 30667 359 9200 3987 2576 1533 1441 981 920 675
355 571 34606 405 10382 4499 2907 1730 1627 1107 1038 761
400 643 38970 456 11691 5066 3274 1949 1832 1247 1169 857
450 723 43818 512 13146 5696 3681 2191 2060 1402 1315 964
500 804 48727 570 14618 6335 4093 2436 2290 1559 1462 1072
560 900 54545 638 16364 7091 4582 2727 2564 1746 1636 1200

• Determining if a countermeasure is required

A countermeasure for harmonics is required if the following condition is satisfied: outgoing harmonic current > maximum
value per 1 kW contract power × contract power.

• Harmonic suppression techniques

No. Item Description

Reactor Install an AC reactor (FR-HAL) on the AC side of the inverter or a DC reactor (FR-HEL) on its DC side, or
1
(FR-HAL, FR-HEL) install both to suppress outgoing harmonic currents.
The converter switches the converter section ON/OFF to reshape an input current waveform into a sine
High power factor
2 wave, greatly suppressing harmonics. Use the converter with the dedicated options such as the phase
converter
detection transformer box, AC reactor, and filter capacitor.
Power factor improving When used with a reactor connected in series, the power factor improving correction capacitor can
3
static capacitor absorb harmonic currents.
Transformer multi-phase Use two transformers with a phase angle difference of 30° in combinations of to ∆ and ∆ to ∆, to
4
operation provide an effect corresponding to 12 pulses, reducing low-degree harmonic currents.
Passive filter A capacitor and a reactor are used together to reduce impedances at specific frequencies. Harmonic
5
(AC filter) currents are expected to be absorbed greatly by using this technique.
This filter detects the current in a circuit generating a harmonic current and generates a harmonic current
6 Active filter
equivalent to a difference between that current and a fundamental wave current to suppress the 4
harmonic current at the detection point. Harmonic currents are expected to be absorbed greatly by using
this technique.

PRECAUTIONS FOR USE OF THE CONVERTER 71

Techniques and measures for electromagnetic compatibility (EMC)

4.3 Techniques and measures for

electromagnetic compatibility (EMC)
4.3.1 Countermeasures against inverter-generated
EMI
In this section, electromagnetic noises refer to the high frequency (the 40th to 50th order harmonics) of irregular waveform in
a power distribution system.
Some electromagnetic noises enter the converter to cause the converter malfunction, and others are radiated by the
converter to cause the peripheral devices to malfunction. (The former is called EMS problem, the latter is called EMI problem,
and both is called EMC problem.) Though the high power factor converter is designed to be immune to noises, it requires the
following basic measures and EMS measures as it handles low-level signals. The high power factor converter chops output
voltage at high carrier frequency, it could generate noises. In a system including the converter, the noise created by the
system increases when both the converter and an inverter are operated. If these noises cause peripheral devices to
malfunction, EMI measures should be taken to suppress noises. Techniques differ slightly depending on EMI paths.

Basic techniques
• Do not run the power cables (I/O cables) and signal cables of the converter in parallel with each other and do not bundle
them.
• Use shielded twisted pair cables for the detector connecting and control signal cables and connect the sheathes of the
shielded cables to terminal SD.
• Ground (earth) devices such as the reactor 1, reactor 2, phase detection transformer box, and converter at one point.
(Refer to page 47.)
• Install the recommended noise filter on the converter (refer to page 76). The noise filter is effective against the noises that
enter the converter and the noises that are radiated from the converter.
• Do not earth (ground) the shields of the communication or control cables of the converter or inverter.

EMS measures to reduce electromagnetic noises that enter the

converter and cause it to malfunction
When devices that generate many electromagnetic noises (which use magnetic contactors, electromagnetic brakes, many
relays, for example) are installed near the converter and the converter may malfunction due to electromagnetic noises, the
following countermeasures must be taken.
• Provide surge suppressors for devices that generate many electromagnetic noises to suppress electromagnetic noises.
• Install data line filters to signal cables.
• Ground (Earth) the shields of the detector connection and control signal cables with cable clamp metal.

72 PRECAUTIONS FOR USE OF THE CONVERTER

 Techniques and measures for electromagnetic compatibility (EMC)

EMI measures to reduce electromagnetic noises that are radiated by the

converter to cause the peripheral devices to malfunction
Converter-generated noises are largely classified into those radiated by the converter itself and by the cables (I/O) connected
to its main circuit, those electromagnetically and electrostatically induced to the signal cables of the peripheral devices close
to the power cable connected to the converter main circuit, and those transmitted through the power cables.

Converter generated Air propagated Noise directly

electromagnetic noise noise radiated from …Path (a)
converter
Noise radiated from
…Path (b) (e)
power supply cable Telephone
Noise radiated from
motor connection …Path (c) (g)
cable (g)
Electromagnetic (b) Reactor 1
…Path (d), (e)
induction noise Dedicated circuit parts
for inrush current protection
Electrostatic
…Path (f) (a) Reactor 2
induction noise Instrument Receiver Converter Sensor power supply
Noise propagated (c)
Electrical path Inverter
through power …Path (g) (f) (a) (h)
propagated noise supply cable
(d)
Noise from earthing
(grounding) cable …Path (h) (c) Sensor
Motor IM
due to leakage current

Noise
Measure
propagation path
When devices that handle low-level signals and are liable to malfunction due to electromagnetic noises, e.g.
instruments, receivers and sensors, are contained in the enclosure that contains the converter or when their signal
cables are run near the converter, the devices may malfunction due to by air-propagated electromagnetic noises.
The following measures must be taken:
• Install the easily affected devices as far away from the converter and the inverter as possible.
• Place the easily affected signal cables as far away from the converter and the inverter as possible.
(a), (b), (c) • Do not run the signal cables and power cables (converter I/O cables) in parallel with each other and do not bundle
them.
• Install the recommended noise filters (refer to page 76) or the radio noise filters (FR-BIF) on the input side of the
converter, and install the line noise filters (FR-BLF, or non-Mitsubishi product RC5128  or FINEMET® FT-3KM F/
FT-3KL F ) on the output side of the inverter to suppress radiated noises from the cables.
• Use shielded cables as signal cables and power cables and run them in individual metal conduits to produce
further effects.
When the signal cables are run in parallel with or bundled with the power cables, magnetic and static induction
noises may be propagated to the signal cables to cause malfunction of the devices. The following measures must
be taken:

(d), (e), (f)

• Install the easily affected devices as far away from the converter and the inverter as possible.
• Place the easily affected signal cables as far away from the converter and the inverter as possible.
4
• Do not run the signal cables and power cables (I/O cables of the converter and inverter) in parallel with each other
and do not bundle them.
• Use shielded cables as signal cables and power cables and run them in individual metal conduits to produce
further effects.
When the power supplies of the peripheral devices are connected to the power supply of the converter in the same
line, converter-generated noises may flow back through the power supply cables to cause malfunction of the
devices. The following measures must be taken:
(g) • Install the recommended noise filter on the power input cables of the converter.
• Install a line noise filter (FR-BLF, RC5128, FINEMET® FT-3KM F / FT-3KL F series) to the power output
cables of the inverter.
When a closed loop circuit is formed by connecting the peripheral devices wiring to the converter, leakage currents
(h) may flow through the earthing (grounding) cable of the converter to cause the devices to malfunction. In that case,
disconnecting the earthing (grounding) cables from the devices may stop the malfunction of the devices.
 RC5128 is available on the market, manufactured by Soshin Electric Co., Ltd.
 The FINEMET® FT-3KM F / FT-3KL F is available on the market, manufactured by Hitachi Metals, Ltd.
FINEMET is a registered trademark of Hitachi Metals, Ltd.

PRECAUTIONS FOR USE OF THE CONVERTER 73

Techniques and measures for electromagnetic compatibility (EMC)

● EMI measure example

Decrease the
Enclosure carrier frequency.

Converter
Dedicated
Power supply ∗1 ∗2 Motor

Reactor 1
M

Inverter
circuit parts for

Reactor 2
inrush current
Refer to page 47 for earthing (grounding) FR- protection Use 4-core cable for motor power
of the converter and peripheral devices. BIF cable and use one cable as
earth (ground) cable.
It is preferred that the inverter, the converter,
and power cables are separated from
sensor circuit by 30 cm or more Use a twisted pair shielded cable.
(at least 10 cm). Sensor
Power supply
Control power
for sensor
Do not connect earthing (grounding) Do not earth (ground) shield but
cables directly to the enclosure. connect it to signal common cable.

Do not use control cables for earthing (grounding).

 Recommended noise filter (Refer to page 76.)

 Line noise filters (FR-BLF, RC5128, or non-Mitsubishi product FINEMET® FT-3KM F / FT-3KL F) (Refer to page 76.)

74 PRECAUTIONS FOR USE OF THE CONVERTER

 Techniques and measures for electromagnetic compatibility (EMC)

EMI measures to reduce electromagnetic noises using stand-alone

options
By using the radio noise filter (FR-BIF), line noise filter, and the recommended noise filter, the noise radiated from the
connection cable can be suppressed. Refer to the Instruction Manual of each option for the details of the radio noise filter (FR-
BIF) and line noise filter. Refer to page 76 for the details of the recommended noise filter.

• Connection diagram example (for a FR-A800 series inverter)

Line noise filters (FR-BLF, or

non-Mitsubishi product RC5128 ∗2
or FINEMET® FT-3KM F / FT-3KL F)
on the inverter output side
Reactor 1 Reactor 2
(FR-A8BL1) (FR-A8BL2) Converter Inverter
Recommended noise filter ∗1, ∗4 Thermostat Thermostat
(NC) × 3 (NC) × 3
TP1 TP2 Inrush current limit MCs TP3 TP4

MCCB MC Fuse R/L1 R2/L12 MC1 R3/L13 R4/L14 P+

R4/L14 P+
U

S/L2 S2/L22 MC2 S3/L23 S4/L24

Power S4/L24 V M
T/L3 T2/L32 MC3 T4/L34 N- N-
T3/L33 T4/L34 W

Fan power terminals

Fan power R1/L11
FAN FAN terminals FAN FAN
(100 to 240 VAC) S1/L21
(100 to 240 VAC)
R5 S5 R5 S5 R5 S5 R5 S5

Inrush current limit resistor

Filter capacitor with thermostat (3, NC)
(FR-A8BC)

R1/L11
S1/L21

Auxiliary contact (3, NO)

for inrush current limit MCs
MC5
Small
MC1 MC2 MC3
Mini relay FM
MC1

Coils for SD Meter

MC2
inrush current limit MCs LOH ∗3
Stepdown transformer for SD AM
MC3 ROH ( )
power source of MC Analog signal
SD
(400 to 220 V) 5 output (0 to 10 VDC)
( )
R/L1 Buffer relay for MCs ∗3
S/L2 380V R5/L15 MC4 A1
S/L2 400V Bu1 C1
S/L2 420V
S/L2 440V
S/L2 460V S5/L25
S/L2 480V
S/L2 500V
Phase detection transformer box
(FR-A8VPB)
Plug-in option
(FR-A8AVP)
R
S R2 R2
T RS2 RS2 RYA X10
TS2 TS2 RSO RES
T2 T2 SE2 SD

 Install the filter on the input side of Terminals R, S, and T of the converter.
 RC5128: manufactured by Soshin Electric Co., Ltd.
 Do not earth (ground) the shield but connect it to the signal common.
 Refer to page 76 for the installation method of the recommended noise filter.
 The FINEMET® FT-3KM F / FT-3KL F is available on the market, manufactured by Hitachi Metals, Ltd.
FINEMET is a registered trademark of Hitachi Metals, Ltd.
4
NOTE
• Configure a system where the magnetic contactor at the converter input side shuts off the power supply at a failure of the
converter or the connected inverter. (The converter does not shut off the power supply by itself.)
Failure to do so may overheat and burn the resistors in the converter and the connected inverter.

PRECAUTIONS FOR USE OF THE CONVERTER 75

Techniques and measures for electromagnetic compatibility (EMC)

Recommended noise filter

Install this to reduce the electromagnetic noise.

• Connection diagram
Install a noise filter composed of common mode chokes (ring cores) and damping resistors on the input side of the high power
factor converter.
Use the FINEMET® common mode chokes (manufactured by Hitachi Metals, Ltd.) for the zero-phase reactors and the
inverter option brake resistor FR-ABR for the damping resistors.
FINEMET is a registered trademark of Hitachi Metals, Ltd.
The noise filter installed on the input side of the converter is effective in suppressing noises arising from a leakage current
flowing along the path shown in the following figure.
Recommended
noise filter∗1
Detecting phase /
Zero-phase reactor Supplying control power
Molded case Magnetic
circuit breaker contactor Reactor 1 Filter capacitor Reactor 2 Converter Cable shield or the like
(FR-A8BC) Inverter Motor
Power (MCCB), (MC) (FR-A8BL1) (FR-A8BL2)
䚷 Mechanical
supply earth leakage and dedicated load
circuit breaker circuit parts
(ELB), or fuse for inrush
current
protection
(FR-A8MC)

Damping resistor
Stray
capacitance

 Suppression effectiveness of the recommended noise filter remains the same wherever it is installed between the power supply and the reactor
1 (FR-A8BL1).
Observe the following precautions for installation of the recommended noise filter.
• As a guide, the total length of cable between the noise filter and the converter should be short enough to fit into an enclosure (about 4 m or shorter).
• Do not divert some of the current from bus cables between the noise filter and the reactor 1.

Recommended noise filter

Zero-phase reactor Filter capacitor
Molded case
circuit breaker Reactor 1 (FR-A8BC) Reactor 2 Converter
Magnetic and dedicated (FR-A8BL2)
Power (MCCB), (FR-A8BL1) 䚷
contactor circuit parts for
supply earth leakage (MC)
circuit breaker inrush current
(ELB), or fuse protection
(FR-A8MC) Detecting phase /
Supplying control power

Damping resistor Devices

• Components
FR-A842-[]
Item
07700(315K) 08660(355K) 09620(400K) 10940(450K) 12120(500K)
Model FT-3KM F200160PB FT-3KM F200160PB
Zero-phase reactor
Quantity 4 pcs (penetrated)
Model FR-ABR-H22K
Damping resistor
Quantity 4 pcs in parallel (combined resistance: 13 Ω)
5.5 mm2 or more (when using HIV cable, etc.)
Wire diameter AWG 10 or less (when using THHW cable, etc.)
6 mm2 or more (when using PVC cable, etc.)
Damping resistor cable
Cable length As short as possible within 10 m.
Voltage
Equal voltage resistance to the main circuit cables.
specifications

 Manufactured by Hitachi Metals, Ltd.

 The FR-ABR-H22K consists of two damping resistors. Order two FR-ABR-H22K to have a total of 4 damping resistors.

76 PRECAUTIONS FOR USE OF THE CONVERTER

 Techniques and measures for electromagnetic compatibility (EMC)

NOTE
• Observe the instructions given in the Instruction Manual of each component.
• The damping resistor (FR-ABR) requires 5 cm clearance or more around it for directions. Besides, the distance between the
damping resistors should be 1 cm or more.
• As a reference, the surface temperature increase of the damping resistor (FR-ABR) is about 30°C and the total resistance
loss is about 300 W (dependent on the environment).
• For the converters not shown in the table above, installing the recommended noise filter is not required.
If leakage current from the inverter and/or the converter flows along the path shown in the following figure, installing a line
noise filter between the inverter and the motor is effective in suppressing noises arising from the leakage current.
Detecting phase /
Recommended Supplying control power
noise filter ∗2
Zero-phase reactors Line noise
(ring cores) filter∗3
Molded case Cable shield or
Reactor 1 Filter capacitor Reactor 2 Converter Inverter the like
circuit breaker Motor Mechanical
Power Magnetic (FR-A8BL1) (FR-A8BC) (FR-A8BL2) load
(MCCB), 䚷
earth leakage contactor
supply (MC) and dedicated
circuit breaker circuit parts
(ELB), or fuse for inrush current
protection
(FR-A8MC)

Damping resistor
Stray
capacitance

Devices ∗1

 The leakage current can cause a malfunction of devices placed over the leakage current path.
 Suppression effectiveness of the recommended noise filter remains the same wherever it is installed between the power supply and the reactor
1 (FR-A8BL1).
Observe the following precautions for installation of the recommended noise filter.
• As a guide, the total length of cable between the noise filter and the converter should be short enough to fit into an enclosure (about 4 m or shorter).
• Do not divert some of the current from bus cables between the noise filter and the reactor 1.
Recommended noise filter
Zero-phase reactor Filter capacitor
Molded case
circuit breaker Reactor 1 (FR-A8BC) Reactor 2 Converter
Magnetic and dedicated (FR-A8BL2)
Power (MCCB), (FR-A8BL1) 䚷
contactor circuit parts for
supply earth leakage (MC)
circuit breaker inrush current
(ELB), or fuse protection
(FR-A8MC) Detecting phase /
Supplying control power

4
Damping resistor Devices

 Recommended line noise filters include the FR-BLF, RC5128, FINEMET® FT-3KM F or FT-3KL F series.
RC5128: manufactured by Soshin Electric Co., Ltd.
FINEMET® FT-3KM F / FT-3KL F series: manufactured by Hitachi Metals, Ltd.

PRECAUTIONS FOR USE OF THE CONVERTER 77

Techniques and measures for electromagnetic compatibility (EMC)

4.3.2 Selecting the rated sensitivity current for the

earth leakage circuit breaker
To install the earth leakage circuit breaker on the inverter circuit, select its rated sensitivity current as follows.
• Breaker designed for harmonic and surge suppression Ig1, lg2, lg3 : Leakage currents in wire path during
Rated sensitivity current I∆n ≥ 10 × (Ig1 + Ign + Ig2 + Ig3 + Igm) commercial power supply operation
• Standard breaker Ign : Leakage current from noise filters
Rated sensitivity current I∆n ≥ 10 × {Ig1 + Ign + Ig2 + 3 × (Ig3 + Igm)} on the input side of the converter
Igm : Leakage current from the motor
during commercial power supply
operation
Example of leakage current Leakage current example of Example of leakage current per
per 1km during the commercial three phase induction motor 1km during the commercial Leakage current example of
power supply operation when during the commercial power power supply operation when three phase induction motor
the CV cable is routed in supply operation the CV cable is routed in during the commercial power
metal conduit (200 V 60 Hz) metal conduit supply operation
(200 V 60 Hz) (Three-phase three-wire (Totally-enclosed fan-cooled
delta connection 400 V 60 Hz) type motor 400 V 60 Hz)
Leakage current (mA)

Leakage current (mA)

120 2. 0
Leakage current (mA)

Leakage current (mA)

100 1. 0 120 2. 0
80 0. 7
100
0. 5 1. 0
60 80 0. 7
0. 3
40 60
0. 5
0. 2
20 40
0. 3
0 0. 1 0. 2
2 3.5 8 142238 80150 1. 5 3. 7 7. 5 15223755 20
5.5 30 60 100 2. 2 5.5 1118. 53045 0 0. 1
2 3.5 8 142238 80150 1. 5 3. 7 7. 5 15223755
Cable size (mm2) Motor capacity (kW) 5.5 30 60 100 2. 2 5.5 1118. 53045
Cable size (mm2) Motor capacity (kW)
For wye connection, the amount of leakage current is approx.
1/3 or the above value.

Selection example (diagram shown on the left) (mA)

Breaker designed
Standard
for harmonic and
<Example>
breaker
5.5 mm 2 × 5 m 5.5 mm 2 × 5 m 5.5 mm 2 × 70 m surge suppression
ELB Noise
3φ
Leakage current 5m
filter
Converter Inverter IM 200 V 2.2 kW lg1 (mA) 33 × 1000 m = 0.17
lgm
Leakage current
lg1 lgn lg2 lg3 0 (without noise filter)
lgn (mA)
Leakage current 5m
lg2 (mA) 33 × 1000 m = 0.17
Leakage current 70 m
lg3 (mA) 33 × 1000 m = 2.31
Motor leakage
0.18
current Igm (mA)
Total leakage
2.83 7.81
current (mA)
Rated sensitivity
current 30 100
(≥ Ig × 10) (mA)

NOTE
• Install the earth leakage circuit breaker (ELB) on the input side of the converter.
• In the connection earthed-neutral system, the sensitivity current is blunt against a ground fault in the inverter output side.
Earthing (Grounding) must conform to the requirements of national and local safety regulations and electrical codes. (NEC
section 250, IEC 61140 class 1 and other applicable standards)
• Do not install the breaker on the output side of the inverter. Doing so may cause unnecessarily operations by harmonics even
if the effective value is within the rating, since the eddy current and hysteresis loss will increase, leading to temperature rise.
• The following models are standard breakers: BV-C1, BC-V, NVB, NV-L, NV-G2N, NV-G3NA, and NV-2F earth leakage relay
(except NV-ZHA) and the NV class earth leakage circuit breaker with AA neutral wire open-phase protection.
The other models are designed for harmonic and surge suppression: NV-C/NV-S/MN series, NV30-FA, NV50-FA, BV-C2,
earth leakage alarm breaker (NF-Z), NV-ZHA, and NV-H.

78 PRECAUTIONS FOR USE OF THE CONVERTER

 5 PARAMETERS

This chapter explains the parameters in the converter.

Always read the instructions before use.

5.1 Operation panel (FR-DU08) ......................................................80

5.2 Parameter unit (FR-PU07) ........................................................83
5.3 Parameter List ...........................................................................87
5.4 Parameter details ......................................................................90
5.5 Parameter clear / All parameter clear on the operation
panel...........................................................................................142
5.6 Copying and verifying parameters on the operation panel ..143
5.7 Checking parameters changed from their initial values
(initial value change list).......................................................... 146

PARAMETERS 79
Operation panel (FR-DU08)

5.1 Operation panel (FR-DU08)

5.1.1 Components of the operation panel

To mount the operation panel (FR-DU08) on the enclosure surface, refer to page 61.

No. Component Name Description

(a) — Not available for the converter.

MON: ON when the operation panel is in the monitor mode. Quickly blinks twice
Operation panel mode
(b) intermittently while the converter protective function is activated.
LED indicator
PRM: ON when the operation panel is in the parameter setting mode.

(c) — Not available for the converter.

Frequency unit
(d) ON to indicate frequency.
indicator
Shows a numeric value, a parameter number, etc.
(e) Monitor (5-digit LED)
(The monitor item can be changed according to the Pr.52 setting.)

(f) — Not available for the converter.

FWD key: Its LED is ON during power driving.
REV key: Its LED is ON during regenerative driving.
The LEDs are OFF when the converter stops its operation due to power supply failure
(g) FWD key, REV key
or when a fault occurs.
The LEDs blink when the converter stops its operation due to a cause except the
above-mentioned cause.

(h) STOP/RESET key Used to reset the converter when the protective function is activated.

Turn the setting dial to select a parameter or change the parameter setting.
Press the setting dial to perform the following operations:
(i) Setting dial
• To display the "CNV" (converter) indication.
• To display a fault history number in the fault history mode.
Switches the operation panel to a different mode.
(j) MODE key Holding this key for 2 seconds locks the operation of the operation panel. The key
inoperable function is invalid when Pr.161 = "0 (initial setting)". (Refer to page 126.)
Used to confirm each selection. When the initial setting is set
Switches the monitor screen in the
Power supply frequency Input current Input voltage
(k) SET key monitor mode.
(The monitor item can be changed
according to the Pr.52 setting.)
Goes back to the previous display.
(l) ESC key
Holding this key for a longer time changes the display back to the monitor mode.

(m) PU/EXT key Cancels the PU stop warning.

80 PARAMETERS
 Operation panel (FR-DU08)

5.1.2 Basic Operation of the Operation Panel

Monitor

Second screen Third screen

(Input current∗1 monitoring) (Input voltage∗1 monitoring)
First screen (Power supply
frequency∗1 monitoring)
Parameter setting

The present
setting displayed.

(Example) Alternating

Value change Parameter write complete

Parameter clear All parameter clear Fault history clear Parameter copy

Initial value change list

(Example) Blinking (Example) Blinking (Example) Blinking

Fault history

Fault record 1∗2 Fault record 2∗2 Fault record 8∗2

The last eight faults can be displayed.
(On the display of the last fault record (fault record 1), a decimal point LED is ON.)
When there is no fault history, is displayed.

Hold down
 The monitor item can be changed. (Refer to page 123.)
 For the details of fault history, refer to page 149.

Parameter setting mode

In the parameter setting mode, converter functions (parameters) can be set.
The following table explains the indications in the parameter setting mode. 5
Operation panel Refer to
Function name Definition
indication page

Parameter setting mode The set value of the displayed parameter number is read or changed. 82

Clears and resets parameter settings to the initial values.

Parameter clear However, terminal function selection parameters are not cleared. 142
For the details of the uncleared parameters, refer to page 190.
Clears and resets parameter settings to the initial values. Terminal function
All parameter clear selection parameters are also cleared. 142
For the details of the uncleared parameters, refer to page 190.

Fault history clear Deletes the fault history. 149

Copies the parameter settings saved in the converter to the operation

Parameter copy panel. The parameters copied to the operation panel can be also copied to 143
other converter.

Initial value change list Identifies the parameters that have been changed from their initial settings. 146

PARAMETERS 81
Operation panel (FR-DU08)

5.1.3 Digital characters and their corresponding

printed equivalents
Digital characters displayed on the operation panel display are as follows.

5.1.4 Changing the parameter setting value

Changing
Change the setting of Pr.52 DU/PU main display data selection.
example

Operating procedure
Turning ON the power of the converter
1.
The operation panel is in the monitor mode.
Selecting the parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting the parameter number

3.
Turn until " " (Pr.52) appears. Press to read the present set value. " " (initial value) appears.

Changing the setting value

Turn to change the set value to " ". Press to enter the setting. " " and " " are displayed

alternately.

• Turn to read another parameter.

4.
• Press to show the setting again.

• Press twice to show the next parameter.

• Press three times to return the monitor display to the indication of the power
supply frequency.

NOTE
• If a parameter write condition is not satisfied, a parameter write error appears. (Refer to page 153.)
Error code Error description
Parameter write error

82 PARAMETERS
 Parameter unit (FR-PU07)

5.2 Parameter unit (FR-PU07)

Installing the optional parameter unit (FR-PU07) on the converter allows to set the converter parameters and monitor the
converter status. However, the available functions in the parameter unit installed on the converter are limited compared to
those in the parameter unit installed on the inverter.

5.2.1 Components of the parameter unit

POWER lamp
ON when the power is turned ON.

Monitor
I In ●Liquid crystal display
10.0 A (16 characters × 4 lines, with backlight)
STF FWD PU
●Parameter setting in an interactive manner
●Help function
●Troubleshooting guide
●Monitoring (current, voltage, etc.)
ALARM lamp
ON when a converter fault
occurs.

Operation keys
FR-PU07

5.2.2 Description of keys

Key Description
Used for parameter setting.
Press this key to select the parameter setting mode.
Used to display the first priority monitoring screen.
In the initial setting, the power supply frequency is displayed.
Used to cancel the operation.
Used to display the function menu.
A variety of functions can be used from the function menu.
Used to shift to the next item in the setting or monitoring mode.

to Used to enter a parameter number or set value.

Used to clear the "PS" indication which appears when the converter is stopped by pressing (by the PU stop
function).

Not available for the converter.

• Press either of these keys on the parameter setting mode screen to change the parameter setting value sequentially.
• On the selecting screen, these keys are used to move the cursor.
5
/
• Hold down and press either of these keys to advance or return the display screen one page.

Not available for the converter.

Not available for the converter.

• Stop command key.

• Used to reset the converter when a fault occurs.
• Used to write a set value in the setting mode.
• Used as a clear command key for All parameter clear or the alarm clear (resetting the fault history).
• Used to enter a decimal point when entering numerical value.
• Used as a parameter number read key in the parameter setting mode.
• Used as an item select key on the menu screen such as parameter list or monitoring list.
• Used to show the details of each fault in the alarm (fault) history mode.
• Used as a command voltage read key in the calibration mode.

NOTE
• Do not operate the keys with sharp tools.
• Do not press the LCD part.

PARAMETERS 83
Parameter unit (FR-PU07)

5.2.3 Monitoring function

Indications displayed on the monitoring screen

Hz In (f) Warning indication

OL
(a) Main monitor 60.00 Hz
(e) Unit indication
STF FWD EXT

(b) Connection phase (c) Operating (d) Operation mode indication

sequence indication status indication
(a) Main monitor
The power supply frequency, input current, input voltage, alarm (fault) history or other monitor data is displayed.

Press to display the monitoring list.

Select an item from the monitoring list and press to monitor the selected item.
The following items can be monitored.
Hz In : Power supply frequency (Hz)
I In : Input current (A)
V In : Input voltage (V)
Alarm His : Fault history (the last 8 faults)
Dc Bus : Bus voltage (V)
THT % : Electronic thermal O/L relay load factor (%)
Cum Pwr : Cumulative power (kW)
Cum Opr : Cumulative energization time (h)
Pwr In : Input power (kW)
I/P Signal : Input signal
O/P Signal : Output signal
 When the converter is used as an inverter before conversion, fault records are displayed for both before and after the conversion (the indication
can be switched for up to eight records).
(After the eighth fault occurs in the converted converter, only the converter's fault records will be displayed.)

NOTE
• If setting Pr.52 has changed the monitor item for the first or the second monitor screen, the monitoring list does not recognize
that the monitor item for the first or the second monitor screen has been changed until the monitoring list is read (displayed).
If a monitor item change has been performed while the monitoring list is displayed, the monitoring list does not recognize the
change and the target item displayed does not turn to the new item.
(b) Connection phase sequence indication
The following phase sequence is displayed.
STF : Positive
STR : Negative
--- : Power supply not detected
(c) Operating status indication
The operating status of the converter is displayed.
STOP : Stop state
FWD : Power driving
REV : Regenerative driving
ALAR : Fault state
(d) Operation mode indication
"EXT" (External operation mode) is always indicated.
(e) Unit indication
The unit of the main monitor item is indicated.
(f) Warning indication
The following is indicated when the converter outputs a warning.
Nothing is indicated when there is no warning output.
For the details, refer to page 153.
OL : Overload signal detection
TH : Electronic thermal relay function pre-alarm
PS : PU stop
MT1 to MT3 : Maintenance signal output
SL : Power supply not detected
CP : Parameter copy

84 PARAMETERS
 Parameter unit (FR-PU07)

5.2.4 Function menu

Press in any operation mode to call the function menu, on which you can perform various functions.

NOTE
• There are menus in which some functions are not available.

Function menu list

Function menu Description
The monitoring list appears, and the functions on monitoring such as the monitor item selection to be
1. MONITOR
displayed, the first priority monitoring screen selection.
2. PU Oper The menu appears, but every function in the menu is disabled.
The parameter menu appears, and the parameter setting and the displaying of the initial value
3. Pr.List
change list are available.
4. Pr.Clear The menu to clear parameters appears. Parameter clear and All parameter clear can be executed.
5. Alarm His The last 8 faults are displayed.
6. AlarmClear The fault history (all fault records) can be cleared.
7. Inv.Reset The converter can be reset. (The inverter can also be reset simultaneously.)
8. T/Shooting The menu appears, but every function in the menu is disabled.
9. S/W This function displays the software control number of the converter.
10. Selectop The menu appears, but every function in the menu is disabled.
11. Option The option connector (1 to 3) occupancy condition is displayed.
12. FRCpy set Parameter copy (reading, writing, and verifying of parameters) can be performed.

Function menu transition

key

1 MONITOR 1 Hz In Power supply frequency (Hz)

2 PU Oper
2 I In Input current (A)
3
4 3 V In Input voltage (V)
5 4 Alarm His Fault history (the last 8 faults)
6 5 Empty (no function)
7 Empty (no function)
6
8
9 7 Empty (no function)
10 8 Dc Bus Bus voltage (V)
11 9 Empty (no function)
12 10 THT % Electronic thermal relay load factor (%)
11 Cum Pwr Cumulative power (kW)
12 Cum Opr Cumulative energization time (h)
13 Pwr In Input power (kW)
14 Empty (no function)
15 I/P Signal Input signal
16 O/P Signal Output signal

Not used.
5

PARAMETERS 85
Parameter unit (FR-PU07)

3 Pr.List
1 Setting Mode SETTING MODE 1 Appl.Grp
2 Pr.List 0~9:Ser Pr.No. 2 Pr.List
3 Set Pr.List 3 User List
4 Def.Pr.List Select Oper 4 Param Copy
key
0 Pr Mode
1
2
1 3
2
3 Pr.List
4 Pr.Clear SET Pr.LIST 8
5 Alarm His 1 60.00 0
6 AlarmClear 2 50.00
7 INV.Reset 8 0 0, 1
8 T/Shooting
9 S/W DEF.Pr.LIST
10 Selectop 1 60.00
11 Option 2 50.00
12 PRCpy set 8 0

4 Pr.Clear
1 Clear Pr. Clear Pr. Clear Pr.
2 Clear All Exec<WRITE>
Cancel<ESC> Completed

Clear All Pr. Clear All Pr.

Exec<WRITE>
Cancel<ESC> Completed
1 OHT 5 OVT
2 PUE 6 UVT Error description
5 Alarm His 3 OVT 7 UVT * The last eight faults are listed.
4 OVT 8 UVT

ALARM CLEAR ALARM CLEAR

Exec<WRITE>
6 AlarmClear Cancel<ESC> Completed

INV.RESET
Exec<WRITE> An indication "INV.RESET" appears, but this is the function to reset the converter.
7 INV.Reset Cancel<ESC>

8 T/Shooting
Not used.

<S/W>
9 S/W
8888*

Terminal name The values set in Pr.178 to Pr.189, Pr.192 to Pr.194,

and Pr.196 are displayed.

10 Selectop ON
RL : 0
RM : 1 OFF
RH : 2
RT : 3

<option>
OP1: 8AVP
11 Option OP2: ----
OP3: ----

1 Copy area 1 ∗1
2 Copy area 2
3 Copy area 3 000 Param Copy
12 PRCpy set Name:000
:Select Char Overwrite area 1
READ:Decide Char WRITE:Executing Reading
WRITE:DecideName ESC:Cancel Completed
Copy area 1
1 Read VFD
2 Write VFD
3 Verifing 000 Param Copy
Area 1 to VFD Writing
WRITE:Executing Completed
ESC:Cancel Please Reset

000 Param Copy

Verify Area 1
WRITE:Executing Verifying
ESC:Cancel Completed

 Only the copy area 1 is available to store a parameter setting of the converter. Do not use the copy area 2 for any other product to preserve the
converter parameter setting stored in the copy area 1. Doing so will delete the converter parameter setting stored in the copy area 1.

86 PARAMETERS
 Parameter List

5.3 Parameter List

The following table shows the parameters that can be read after the inverter-to-converter switching.

NOTE
• The setting of parameters in highlighted cells is changeable during operation even if "1" (write disabled) is set in Pr.77
Parameter write selection.

Minimum Initial Refer

Customer
Pr. Name Setting range setting value to
setting
increments FM CA page
1 Maximum frequency 60 Hz 0.01 Hz 60 Hz 91
2 Minimum frequency 50 Hz 0.01 Hz 50 Hz 91
8 SOF input selection 0, 2 1 0 91
9 OH input selection 0, 1 1 0 91
22 Current limit level 0 to 220% 0.1% 150% 92
23 Current limit level (regenerative) 0 to 220%, 9999 0.1% 9999 92
Instantaneous power failure detection
44 0, 9999 1 9999 93
signal clear
Power supply frequency monitoring
49 45 to 65 Hz 0.01 Hz 60 Hz 94
reference
Rated
51 Input power monitoring reference 0 to 3600 kW 0.1 kW 94
capacity
0, 8, 10, 13, 14, 20, 25, 55,
52 DU/PU main display data selection 1 0 96
98
53 Input voltage monitoring reference 0 to 500 V 0.1 V 440 V 94
54 FM/CA terminal function selection 1 to 3, 8, 10, 13, 14, 21, 98 1 1 100
55 Bus voltage monitoring reference 0 to 1000 V 0.1 V 680 V 94
Rated
56 Current monitoring reference 0 to 500 A 0.01 A converter 94
current
57 Restart selection 0, 9999 1 9999 101
65 Retry selection 0 to 5 1 0 102
0 to 10, 101 to 110, 1001 to
67 Number of retries at fault occurrence 1 0 102
1010, 1101 to 1110
68 Retry waiting time 0.1 to 600 s 0.1 s 1s 102
69 Retry count display erase 0 1 0 102
Reset selection/disconnected PU 0 to 3, 14 to 17
75 1 14 104
detection/PU stop selection 100 to 103, 114 to 117
77 Parameter write selection 1, 2 1 2 106
80 Voltage control proportional gain 0 to 1000% 1% 100% 92
81 Voltage control integral gain 0 to 1000% 1% 100% 92
82 Current control proportional gain 0 to 200% 1% 100% 107

5
83 Current control integral gain 0 to 200% 1% 100% 107
84 Power factor command value 0.8 to 1 0.001 1 107
85 Power factor lead/lag setting 0, 1 1 0 107
117 PU communication station number 0 to 31 1 0 113
48, 96, 192, 384, 576, 768,
118 PU communication speed 1 192 113
1152
119 PU communication stop bit length 0, 1, 10, 11 1 1 113
120 PU communication parity check 0, 1, 2 1 2 113
121 PU communication retry count 0 to 10, 9999 1 1 113
123 PU communication waiting time setting 0 to 150 ms, 9999 1 ms 9999 113
124 PU communication CR/LF selection 0, 1, 2 1 1 113
145 PU display language selection 0 to 7 1 0 126
157 OL signal output timer 0 to 25 s, 9999 0.1 s 0s 92
158 AM terminal function selection 1 to 3, 8, 10, 13, 14, 21, 98 1 1 100
161 Key lock operation selection 0, 10 1 0 126
168
Parameter for manufacturer setting. Do not set.
169
170 Watt-hour meter clear 0, 10, 9999 1 9999 96

PARAMETERS 87
Parameter List

Minimum Initial Refer

Customer
Pr. Name Setting range setting value to
setting
increments FM CA page
178 STF terminal function selection 1 9999 127
179 STR terminal function selection 1 9999 127
180 RL terminal function selection 1 9999 127
181 RM terminal function selection 1 9999 127
182 RH terminal function selection 1 9999 127
183 RT terminal function selection 1 33 127
0, 7, 33, 34, 62, 9999
184 AU terminal function selection 1 34 127
185 JOG terminal function selection 1 9999 127
186 CS terminal function selection 1 9999 127
187 MRS terminal function selection 1 7 127
188 STOP terminal function selection 1 0 127
189 RES terminal function selection 1 62 127
190 RDY signal logic selection 0, 100 1 0 128
191 RSO signal logic selection 1, 101 1 1 128
192 IPF terminal function selection 0 to 5, 7, 8, 16, 25, 26, 32, 1 2 129
193 OL terminal function selection 64, 68, 90, 95, 98 to 105, 1 3 129
107, 108, 116, 125, 126,
194 FU terminal function selection 1 4 129
132, 164, 168, 190, 195,
196 ABC2 terminal function selection 198, 199, 206 to 208, 1 99 129
306 to 308, 9999
244 Cooling fan operation selection 0, 1 1 1 131
255 Life alarm status display (0, 1, 4, 5, 8, 9, 12, 13) 1 0 132
256 Inrush current limit circuit life display (0 to 100%) 1% 100% 132
257 Control circuit capacitor life display (0 to 100%) 1% 100% 132
269 Parameter for manufacturer setting. Do not set.
290 Monitor negative output selection 0 to 7 1 0 96
328 Inverter/converter switching 0 to 9999 1 — 16, 187
331 RS-485 communication station number 0 to 31 1 0 113
3, 6, 12, 24, 48, 96, 192,
332 RS-485 communication speed 1 96 113
384, 576, 768, 1152
RS-485 communication stop bit length
333 0, 1, 10, 11 1 1 113
/ data length
RS-485 communication parity check
334 0, 1, 2 1 2 113
selection
335 RS-485 communication retry count 0 to 10, 9999 1 1 113
RS-485 communication waiting time
337 0 to 150, 9999 1 9999 113
setting
RS-485 communication CR/LF
341 0, 1, 2 1 1 113
selection
Communication EEPROM write
342 0, 1 1 0 113
selection
503 Maintenance timer 0 (1 to 9998) 1 0 134
Maintenance timer warning output set
504 0 to 9999 1 9999 134
time
547
Parameter for manufacturer setting. Do not set.
548
563 Energization time carrying-over times (0 to 65535) 1 0 96
Control circuit temperature signal
663 0 to 100°C 1°C 0°C 135
output level
686 Maintenance timer 2 0 (1 to 9998) 1 0 134
Maintenance timer 2 warning output
687 0 to 9998, to 9999 1 9999 134
set time
688 Maintenance timer 3 0 (1 to 9998) 1 0 134
Maintenance timer 3 warning output
689 0 to 9998, to 9999 1 9999 134
set time
867 AM output filter 0 to 5 s 0.01 s 0.01 s 136
869 Current output filter 0 to 5 s 0.01 s — 0.02 s 136
888 Free parameter 1 0 to 9999 1 9999 139
889 Free parameter 2 0 to 9999 1 9999 139

88 PARAMETERS
 Parameter List

Minimum Initial Refer

Customer
Pr. Name Setting range setting value to
setting
increments FM CA page
Cumulative power monitor digit shifted
891 0 to 4, 9999 1 9999 96
times
C0 (900) FM/CA terminal calibration — — — 136
C1 (901) AM terminal calibration — — — 136
C8 (930) Current output bias signal 0 to 100% 0.1% 0% 136
C9 (930) Current output bias current 0 to 100% 0.1% 0% 136
C10 (931) Current output gain signal 0 to 100% 0.1% 100% 136
C11 (931) Current output gain current 0 to 100% 0.1% 100% 136
989 Parameter for manufacturer setting. Do not set.
990 PU buzzer control 0, 1 1 1 140
991 PU contrast adjustment 0 to 63 1 58 140
997 Fault initiation 0 to 255, 9999 1 9999 140
1006 Clock (year) 2000 to 2099 1 2000 141
1007 Clock (month, day) Jan. 1 to Dec. 31 1 101 141
1008 Clock (hour, minute) 0:00 to 23:59 1 0 141
1202 Inrush current limit circuit life setting 0 to 100%, 9999 1% 9999 132
1344 R-S turns ratio compensation 95.0 to 105.0%, 9999 0.1% 9999 90
1345 T-S turns ratio compensation 95.0 to 105.0%, 9999 0.1% 9999 90
1499 Parameter for manufacturer setting. Do not set.
Pr.CLR Pr.Clear 0, 1 1 0 142
ALL.CL All parameter clear 0, 1 1 0 142
Err.CL Fault history clear 0, 1 1 0 149
P CPY PRCpy set 0, 1, 2, 3 1 0 143
Pr.CHG Initial value change list — 1 0 146
 The parameter number in parentheses is the one for use with the parameter unit (FR-PU07).

PARAMETERS 89
Parameter details

5.4 Parameter details

5.4.1 Setting the phase detection transformer box

(FR-A8VPB) input voltage
Adjust the phase detection transformer box (FR-A8VPB) input voltage as follows.

Initial
Pr. Name Setting range Description
value
R-S turns ratio 95.0 to 105.0% Compensates for fluctuations in the input voltage.
1344 9999
compensation 9999 Compensation disabled.
T-S turns ratio 95.0 to 105.0% Compensates for fluctuations in the input voltage.
1345 9999
compensation 9999 Compensation disabled.
 The setting is applied after converter reset.
• Set the values specified on the rating plate of the FR-A8VPB in Pr.1344 and Pr.1345. (If the Pr.1344 and Pr.1345 settings
are not consistent with the values specified on the rating plate of the FR-A8VPB, protective functions for overcurrent or
overvoltage may not be activated when the input voltage suddenly changes according to the load, or the converter's
performance specifications such as the power factor or harmonic suppression characteristics may not be satisfied.)

MODEL FR-A8AVPB-H

PARAMETER Pr. 1344 = % Set Pr.1344 and Pr.1345 as specified.

PARAMETER Pr. 1345 = %
DATE
MITSUBISHI ELECTRIC CORPORATION

NOTE
• Stop the converter operation before setting Pr.1344 and Pr.1345. When inverters or other peripheral devices are connected
to the converter, be sure to stop their operation.

90 PARAMETERS
 Parameter details

5.4.2 Power frequency input to the converter (Pr.1 and

Pr.2)
The following parameters show that the allowable power frequency for the converter is between 50 and 60 Hz.

Initial Setting
Pr. Name Description
value range
The parameter shows that the upper limit of allowable range
1 Maximum frequency 60 Hz 60 Hz of the power frequency is 60 Hz.
(Read only)
The parameter shows that the lower limit of allowable range
2 Minimum frequency 50 Hz 50 Hz of the power frequency is 50 Hz.
(Read only)

5.4.3 Operation selection for the SOF signal and the

OH signal (Pr.8 and Pr.9)
The converter operations can be changed by using Pr.8 for the SOF signal and Pr.9 for the OH signal.

Initial Setting
Pr. Name Description
value range
NO contact: Turning ON of the SOF signal stops the
0
converter operation.
8 SOF input selection 0
NC contact: Turning OFF of the SOF signal stops the
2
converter operation.
NO contact: Turning ON of the OH signal activates a
0
protective function of the converter to shut off its output.
9 OH input selection 0
NC contact: Turning OFF of the OH signal activates a
1
protective function of the converter to shut off its output.

• Converter operation determined by the SOF signal input status and the Pr.8 setting
SOF signal input Converter operation
status Pr.8 = "0" (NO contact) Pr.8 = "2" (NC contact)
OFF Operation continues. Operation stops.
ON Operation stops. Operation continues.

• Converter operation determined by the OH signal input status and the Pr.9 setting
OH signal input Converter operation
status Pr.9 = "0" (NO contact) Pr.9 = "1" (NC contact)
Operation stops due to the
OFF Operation continues.
5
fault.
Operation stops due to the
ON Operation continues.
fault.

PARAMETERS 91
Parameter details

5.4.4 DC voltage control (Pr.22, Pr.23, Pr.80, Pr.81, and

Pr.157)
Use the following parameters to control DC voltage output from the converter as commanded.
Operation can be stable enough with these parameters in the initial setting, however, some adjustments may be
required if voltage vibration occurs depending on the conditions of the power supply or connected inverters.

Initial
Pr. Name Setting range Description
value
22 Current limit level 150% 0 to 220% Set the current limit where the current limit operation starts.
Set the current limit where the current limit operation starts
Current limit level 0 to 220%
(during regenerative driving).
23 9999
(regenerative)
9999 The same setting in Pr.22 is applied.
Set the OL signal output start time at the activation of torque
157 OL signal output timer 0s 0 to 25 s, 9999
limit operation.
Set the proportional gain for the voltage control.
Voltage control
80 100% 0 to 1000% Increasing the setting value reduces the DC voltage
proportional gain fluctuation caused by external disturbance.
Set the integral gain for the voltage control.
Voltage control integral
81 100% 0 to 1000% Increasing the setting value shortens the recovery time from
gain the DC voltage fluctuation caused by external disturbance.

Adjusting DC voltage fluctuation (Pr.80 and Pr.81)

• Adjust the fluctuation range of the DC voltage by setting Pr.80.
Increasing the setting value reduces the DC voltage fluctuation caused by external disturbance.
• Adjust the recovery time to the commanded value at a fluctuation of DC voltage by setting Pr.81.
Increasing the setting value shortens the recovery time from the DC voltage fluctuation caused by external disturbance.

NOTE
• Setting Pr.80 too large makes the operation unstable.
• Setting only Pr.81 makes the operation unstable.

Setting the current limit level (Pr.22, Pr.23, Pr.157)

• Limit the output current not to exceed the specified value.
Set the current limit level by using Pr.22.
Current limit level at the regenerative operation can be individually set by setting a value other than "9999" to Pr.23.
Set the current limits as a percentage (set current limit ratios) with 100 being equal to the converter rated current in Pr.22
and Pr.23.
• The OL signal is output when output currents are limited by the current limit level (when the current limit function is active).
Use Pr.157 to set a delay time between the time when the current reaches the limit level and the time when the OL signal is
output.
Current

Pr.22
Pr.157 Pr.157 Output current

Pr.157

Time
OL signal ON ON

NOTE
• When the output current reaches the current limit level, DC voltage decreases during power driving, and DC voltage
increases during regeneration.

92 PARAMETERS
 Parameter details

5.4.5 Instantaneous power failure detection hold

signal (Pr.44)
Use this parameter to set the state of the Y16 signal to check the history of instantaneous power failures.

Initial Setting
Pr. Name Description
value range
Instantaneous power 0
Turns OFF the Instantaneous power failure detection hold
44 failure detection signal 9999 (Y16) signal.
clear 9999 Function disabled.

• The Instantaneous power failure detection hold (Y16) signal turns ON when the Instantaneous power failure (IPF) signal
turns ON during the converter operation. The Y16 signal turns OFF when a converter reset is performed or Pr.44 is set to
"0".
• For the terminal used for the Y16 signal, set "16 (positive logic)" or "116 (negative logic)" to any of Pr.192 to Pr.194, and
Pr.196 (Output terminal function selection).

IPF signal OFF ON OFF ON OFF ON OFF

Y16 signal OFF ON OFF ON

Write Pr.44 = "0".

NOTE
• Pr.44 always reads "9999".
• Changing the terminal assignment using Pr.192 to Pr.194, and Pr.196 (Output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.

PARAMETERS 93
Parameter details

5.4.6 Terminal FM (pulse train output) and terminal

AM/CA (analog output) reference (Pr.49, Pr.51,
Pr.53, Pr.55, Pr.56)
Two types of monitor output, pulse train output from the terminal FM and analog output from the terminal AM/CA, are available.
Set the reference of the signal output from terminals FM and AM/CA.

Pr. Name Initial value Setting range Description

Power supply frequency Set the full-scale value when the output frequency
49 60 Hz 45 to 65 Hz
monitoring reference monitor value is output through terminal FM, CA, or AM.
Input power monitoring Converter Set the full-scale value when the input power monitor
51 0 to 3600 kW
reference rated power value is output through terminal FM, CA, or AM.
Input voltage Set the full-scale value when the input voltage monitor
53 440 V 0 to 500 V
monitoring reference value is output through terminal FM, CA, or AM.
Bus voltage monitoring Set the full-scale value when the bus voltage monitor
55 680 V 0 to 1000 V
reference value is output through terminal FM, CA, or AM.
Current monitoring Converter Set the full-scale value when the input current monitor
56 0 to 3600 A
reference rated current value is output through terminal FM, CA, or AM.

Reference for power supply frequency monitor (Pr.49)

• For the FM type converter, enter the full-scale value of the meter corresponding to a pulse train of 1440 pulses/s output via
terminal FM.
Enter the frequency value at full scale of the meter (1 mA analog meter) installed between terminal FM and terminal SD.
The pulse speed is proportional to the power supply frequency. (The maximum pulse train output is 2400 pulses/s.)
Pulse speed (pulse/s)

2400

1440

0 Hz 45 Hz 60 Hz 65 Hz
(initial value)

Pr.49 setting range

• For the CA type converter, enter the full-scale value of the meter corresponding to a current of 20 mA output via terminal
CA. Enter the current value at full scale of the meter (20 mA ammeter) installed between terminal CA and terminal 5.
The output current is proportional to the frequency. (The maximum output current is 20 mADC.)
Output current

20 mA

0A
0 Hz 45 Hz 60 Hz 65 Hz
(initial value)

Pr.49 setting range

• Enter the full-scale value of the meter corresponding to a voltage of 10 VDC output via terminal AM.
Enter the frequency value at full scale of the meter (10 VDC voltmeter) installed between terminal AM and terminal 5.
The output voltage is proportional to the frequency. (The maximum output voltage is 10 VDC.)
Output voltage

10 VDC

0V
0 Hz 45 Hz 60 Hz 65 Hz
(initial value)

Pr.49 setting range

94 PARAMETERS
 Parameter details

Reference for input power monitor (Pr.51), input voltage monitor (Pr.53),
bus voltage monitor (Pr.55), and current monitor (Pr.56)
• For the FM type converter, enter the full-scale value of the meter corresponding to a pulse train of 1440 pulses/s output via
terminal FM.
Enter the power (kW), voltage (V), or current (A) value at full scale of the meter (1 mA analog meter) installed between
terminal FM and terminal SD.
The pulse speed is proportional to the monitored value. (The maximum pulse train output is 2400 pulses/s.)
Pulse speed (pulse/s)

2400

1440

0 Pr.51 initial value (rated power) 3600 kW

0 Pr.53 initial value (440 V) 500 V
0 Pr.55 initial value (680 V) 1000 V
0 Pr.56 initial value (rated current) 3600 A

Setting range

• For the CA type converter, enter the full-scale value of the meter corresponding to a current of 20 mA output via terminal
CA. Enter the current value at full scale of the meter (20 mA ammeter) installed between terminal CA and terminal 5.
The output current is proportional to the power (kW), voltage (V), or current (A). (The maximum output current is 20 mADC.)
Output current

20 mADC

0 Pr.51 initial value (rated power) 3600 kW

0 Pr.53 initial value (440 V) 500 V
0 Pr.55 initial value (680 V) 1000 V
0 Pr.56 initial value (rated current) 3600 A

Setting range

• Enter the full-scale value of the meter corresponding to a voltage of 10 VDC output via terminal AM.
Enter the power (kW), voltage (V), or current (A) value at full scale of the meter (10 VDC voltmeter) installed between
terminal AM and terminal 5.
The output voltage is proportional to the monitored value. (The maximum output voltage is 10 VDC.)
5
Output voltage

10 VDC

Setting range

Pr.51 initial value (rated power)

Pr.51 initial value (rated power) 3600 kW

Pr.53 initial value (440 V) 500 V
Pr.55 initial value (680 V) 1000 V
∗1 Pr.56 initial value (rated current) 3600 A

Setting range
-10 VDC
 When the input power monitor (with regenerative driving indication) is selected as the monitor item, monitor values during regenerative driving
are displayed with a minus sign.

PARAMETERS 95
Parameter details

5.4.7 Monitor item selection on operation panel or via

communication
The monitor item to be displayed on the operation panel or the main monitor of the parameter unit can be selected.

Pr. Name Initial value Setting range Description

Select the item monitored on the
DU/PU main display data 0, 8, 10, 13, 14, 20, operation panel or parameter unit.
52 0
selection 25, 55, 98 Refer to the following table for the monitor
item selection.
0 Set "0" to clear the watt-hour monitor.
Set "10" to monitor the cumulative power
10 in the range of 0 to 9999 kWh via
170 Watt-hour meter clear 9999 communication.
Set "9999" to monitor the cumulative
9999 power in the range of 0 to 65535 kWh via
communication.
Set the availability of negative signals
Monitor negative output
290 0 0 to 7 output via terminal AM and to the
selection operation panel.
The number of times that the cumulative
Energization time carrying- (0 to 65535) energization time reaches 65535 hours is
563 0
over times (Read-only) displayed.
Read-only.
Set the number of places the decimal
point on the watt-hour meter is shifted to
0 to 4
left.
Cumulative power monitor The meter stops at the maximum number.
891 9999
digit shifted times
Shifting disabled.
9999 The meter is reset to 0 when it reaches
the maximum number.

Monitor description list (Pr.52)

• Use Pr.52 DU/PU main display data selection to select the item to monitor on the operation panel or the parameter unit.
• Refer to the following table and select the item to be monitored. (The items marked with "—" cannot be selected.)

RS-485
Minus (-)
Increment Pr.52 dedicated
Monitor item display Description
and unit setting monitor

(hexadecimal)
Power supply
0.01 Hz 0 H01 The power supply frequency is monitored.
frequency
Input current 0.1 A 0 H02 The input current to the converter is monitored.
The effective value of input voltage to the converter is
Input voltage 0.1 V 0 H03
monitored.
Bus voltage 0.1 V 8 H08 The converter output voltage is monitored.
Fault indication — 0 — Each of the last 8 faults is displayed individually.
The cumulative value of the electronic thermal O/L relay
Electronic thermal O/
0.1% 10 H0A is displayed as a percentage of the thermal O/L relay trip
L relay load factor
level.
Input power 0.1 kW 13 H0D The input power to the converter is monitored.
Input power (with The input power to the converter is monitored.
regenerative driving 1 kW 14 H0E  Negative values with a minus sign (-) are displayed
indication) during regenerative driving. 
The counter of cumulative energization time since the
converter shipment is displayed.
Cumulative
1h 20 H14 The number of times an integrated value has reached
energization time
the maximum value of 65535 hours can be checked in
Pr.563.
The counter of cumulative power calculated from the
Cumulative power 0.1 kWh 25 H19 input power monitor value is displayed.
Use Pr.170 to clear the counter. (Refer to page 98.)

96 PARAMETERS
 Parameter details

RS-485
Minus (-)
Increment Pr.52 dedicated
Monitor item display Description
and unit setting monitor

(hexadecimal)
Input terminal status — H0F
ON/OFF status of the I/O signals is displayed on the
Output terminal 55
— H10 operation panel. (Refer to page 98.)
status
The temperature of the control circuit board is
Control circuit monitored. (Refer to page 135)
°C 98 H62 
temperature Terminal FM/CA: 0 to 100°C
Terminal AM: -20 to 100°C
 The cumulative energization time is accumulated from 0 to 65535 hours, then cleared, and accumulated again from 0.
 On the parameter unit (FR-PU07),"kW" is displayed.
 When the value is monitored via communication, the value is displayed in 1-kWh increments.
 Only the FR-DU08 supports a signed number indication and a negative value is displayed during regenerative driving. The minus-sign indication
is available only on the FR-DU08. Negative values are displayed during regenerative driving regardless of the setting in Pr.290 Monitor
negative output selection.
 Unsigned values are displayed on the FR-PU07 even during regenerative driving.
 Parameter setting is not valid to set the item as the main monitor item on the parameter unit (FR-PU07). Use the monitor function of the FR-
PU07 for the setting.
 The circle in this column indicates that the indication of negative signed numbers is available.

Monitor display for operation panel (Pr.52)

• When Pr.52 = "0" (initial value), the monitoring of power supply frequency, input current, input voltage and fault display can

be selected in sequence by pressing .

• The monitor set in Pr.52 is displayed in the third screen (initially set to monitor the input voltage).
• The first screen (initially set to monitor the power supply frequency) is displayed at power-ON in the initial setting. To

change the screen displayed at power-ON, display the screen you want to display at power-ON, and hold down for
1 second. (To monitor the power supply frequency at power-ON again, display the screen of power supply frequency, and

hold down for 1 second.)

● First screen
(initially displayed at power-ON) ● Second screen ● Third screen ● Fault screen
With fault data

Power supply frequency monitoring Input current monitoring Input voltage monitoring

The following is the screen flow diagram when Pr.52 = "20" (cumulative energization time).
● First screen
(initially displayed at power-ON) ● Second screen ● Third screen ● Fault screen
With fault data

5
Power supply frequency monitoring Input current monitoring Cumulative energization time

PARAMETERS 97
Parameter details

Monitoring I/O terminals on the operation panel (FR-DU08) (Pr.52)

• When Pr.52 = "55", the I/O terminal states can be monitored on the operation panel (FR-DU08).
• The I/O terminal monitor is displayed on the third screen.
• When a terminal is ON, the corresponding LED segment is ON. The center LED segments are always ON.
• On the I/O terminal monitoring screen (Pr.52 = "55"), the upper LEDs indicate the input terminal status, and the lower LEDs
indicate the output terminal status.
STP Segments corresponding to input terminals
AU RES STF JOG
RM RH CS
RT MRS STR
RL ─ Indication ─
Terminals STF, RH,
The center LED segments and ABC2: ON
are always ON.

OL
FU
ABC2 IPF
Segments corresponding to output terminals

Cumulative energy monitoring and resetting (Pr.170, Pr.891)

• When the cumulative power is monitored (Pr.52 = "25"), the output power monitor value is added up and is updated in 100
ms increments. (The values are saved in EEPROM every hour.)
• The output power monitor value is added to the cumulative power monitor value during power driving, and is subtracted
from the cumulative power monitor value during regenerative driving.
• Increments and ranges of monitoring on the operation panel or parameter unit or via communication (RS-485
communication) are as follows.

On operation panel / parameter unit Communication

Range
Range Increment Increment
Pr.170 = 10 Pr.170 = 9999
0 to 999.99 kWh 0.01 kWh
0 to 65535 kWh
1000.0 to 9999.9 kWh 0.1 kWh 0 to 9999 kWh 1 kWh
(initial value)
10000 to 99999 kWh 1 kWh
 Power is measured in the range of 0 to 99999.99 kWh, and the values are displayed in five digits. After the watt-hour meter (cumulative power
counter) reaches "999.99" (999.99 kWh), the meter displays values in 0.1 increments such as "1000.0" (1000.0 kWh).

• The decimal point position on the watt-hour meter can be shifted to left. The number of digits to be shifted is equal to the
setting of Pr.891 Cumulative power monitor digit shifted times.
For example, when the cumulative power is 1278.56 kWh and Pr.891 is set to "2", "12.78" is displayed (in 100's of units) on
the operation panel and the communication data is converted into "12".
• When Pr.891 = "0 to 4" and the cumulative value exceeds the upper limit, the decimal point position must be shifted. When
Pr.891 = "9999" and the cumulative value exceeds the upper limit, the meter returns to 0 and the counting starts again.
• Writing "0" in Pr.170 clears the cumulative power monitor.

NOTE
• When Pr.170 is read just after "0" has been written in Pr.170, the setting "9999" or "10" is displayed.

Monitoring cumulative energization time (Pr.563)

• Cumulative energization time monitoring (Pr.52 = "20") accumulates energization time of the converter every hour.
• When the cumulative energization time counter reaches 65535, it starts from 0 again. The number of times the cumulative
energization time counter reaches 65535 can be checked with Pr.563.

NOTE
• The cumulative energization time does not increase if the power is turned OFF after less than an hour.
• When the converter is used as an inverter before conversion, the total energization time for both before and after the
conversion is displayed.

98 PARAMETERS
 Parameter details

Input power (with regenerative driving indication) (Pr.52 = "14")

• When input power is monitored and the regenerative driving indication is enabled (Pr.52 = "14"), values with a minus sign
are available for indication of the input power to the converter.
• The values of input power are displayed with unsigned numbers during power driving, and with signed numbers during
regenerative driving on the operation panel (FR-DU08).
[FR-DU08 indication for [FR-DU08 indication
regenerative driving] for power driving]

The leftmost digit is used to indicate a minus sign.

• 999 kW is indicated when the input power value reaches 10000 kW for power driving, and -999 kW is indicated when the
value reaches -1000 kW for regenerative driving.
• Unsigned values are displayed on the FR-PU07 for both power driving and regenerative driving.

Negative output selection for monitoring (Pr.290)

• Negative values can be used for indication via terminal AM (analog voltage output) and on the operation panel. To check
which items can be indicated with negative numbers, refer to the monitor description list (on page 96).
Negative output through Negative indication on
Pr.290 setting
terminal AM operation panel
0 (initial value), 4 — —
1, 5 Enabled —
2, 6 — Enabled
3, 7 Enabled Enabled
—: Disabled (unsigned numbers only)

NOTE
• When indication with negative numbers is enabled for the output via terminal AM (analog voltage output), the output is within
the range of -10 to +10 VDC. Connect the meter with which output level is matched.
• Parameter unit (FR-PU07) displays only unsigned numbers.

PARAMETERS 99
Parameter details

5.4.8 Monitor display selection for terminals FM/CA

and AM
Monitored values are output in either of the following: analog voltage (terminal AM), pulse train (terminal FM) for the FM
type inverter, or analog current (terminal CA) for the CA type inverter.
The signal (monitor item) to be output via terminal FM/CA and terminal AM can be selected.

Pr. Name Initial value Setting range Description

FM/CA terminal function 1 to 3, 8, 10, 13, 14,
54 1 Select the item monitored via terminal FM or CA.
selection 21, 98
(output
AM terminal function frequency) 1 to 3, 8, 10, 13, 14,
158 Select the item monitored via terminal AM.
selection 21, 98
Set the availability of negative values for indication via
Monitor negative output
290 0 0 to 7 terminal AM and on the operation panel. (Refer to page
selection 99.)

Monitor description list (Pr.54, Pr.158)

• Set Pr.54 FM/CA terminal function selection for monitoring via terminal FM (pulse train output) or terminal CA (analog
current output).
• Set Pr.158 AM terminal function selection for monitoring via terminal AM (analog voltage output). Negative values can be
used for indication via terminal AM (output range: -10 to +10 VDC). The circle in the [Negative output (-)] column indicates
that the output of negative signals is available via terminal AM. (To enable or disable the output of negative signals, refer to
page 99.)
• Refer to the following table and select the item to be monitored. (Refer to page 123 for the list of monitor items.)
Pr.54 (FM/CA) / Terminal FM/CA/
Increment
Monitor item Pr.158 (AM) AM full-scale — Description
and unit
setting value
Power supply
0.01 Hz 1 Pr.49 The power supply frequency is monitored.
frequency
Input current 0.1 A 2 Pr.56 The input current to the converter is monitored.
The effective value of input voltage to the
Input voltage 0.1 V 3 Pr.53
converter is monitored.
Bus voltage 0.1 V 8 Pr.55 The converter output voltage is monitored.
The cumulative value of the electronic thermal
Electronic thermal Thermal O/L relay
0.1% 10 O/L relay is displayed as a percentage of the
O/L relay load factor trip level (100%)
thermal O/L relay trip level.
Input power 0.1 kW 13 Pr.51 The input power to the converter is monitored.
Input power (with Pr.51 The input power to the converter is monitored.
regenerative driving 1 kW 14 (rounded down to  Output to indicate negative values with a minus
indication) integer value) sign (-) during regenerative driving. 
Terminal FM: 1440 pulse/s is output.
Reference voltage
— 21 — Terminal CA: Output is 20 mA.
output
Terminal AM: 10 V is output.
The temperature of the control circuit board is
Control circuit displayed. (Refer to page 135.)
°C 98 100°C 
temperature Without minus sign: 0 to 100°C
With minus sign: -20 to 100°C

 Output to indicate negative values during regenerative driving regardless of the setting in Pr.290 Monitor negative output selection.
 Absolute values are used for indication for terminal FM. (Signed numbers are not available.)
 The circle in this column indicates that the output of negative signals is available.

100 PARAMETERS
 Parameter details

5.4.9 Operation selection at instantaneous power

failure (Pr.57)
When an instantaneous power failure occurs, the converter can restart at the power restoration.

Pr. Name Initial value Setting range Description

The converter restarts operation at the
0 power restoration from instantaneous
power failure.
57 Restart selection 9999
The converter does not restart operation
9999 automatically at the power restoration
from instantaneous power failure.
• When the automatic restart after instantaneous power failure is selected on the inverter, set "0" in Pr.57 Restart selection
of the converter.
When Pr.57 = "9999", the converter output is shut off at the activation of the protective function (E.IPF), even when the
automatic restart after instantaneous power failure is selected on the inverter side.

CAUTION
 The motor and machine will start suddenly after occurrence of an instantaneous power failure (after
the reset time has elapsed).
Stay away from the motor and machine when automatic restart after instantaneous power failure has
been selected.

PARAMETERS 101
Parameter details

5.4.10 Retry function (Pr.65, Pr.67 to Pr.69)

If a fault occurs, the converter resets itself automatically to restart. Faults which trigger the retry operation can be
selected.

Pr. Name Initial value Setting range Description

Faults which trigger the retry operation can be
65 Retry selection 0 0 to 5
selected. (Refer to the table in the next page.)
0 The retry function disabled.
Set the number of retries at a fault occurrence.
1 to 10 A fault output is not provided during the retry
operation.
Set the number of retries at a fault occurrence. (The
101 to 110 setting value minus 100 is the number of retries.)
A fault output is provided during the retry operation.
Number of retries at fault Set the number of retries at a fault occurrence. (The
67 0
occurrence setting value minus 1000 is the number of retries.)
1001 to 1010 A fault output is not provided during the retry
operation.
The RDY signal ON state is retained during retry.
Set the number of retries at a fault occurrence. (The
setting value minus 1100 is the number of retries.)
1101 to 1110
A fault output is provided during the retry operation.
The RDY signal ON state is retained during retry.
Set the time delay from when a converter fault
68 Retry waiting time 1s 0.1 to 600 s
occurs until the retry operation starts.
Setting "0" clears the retry success counter ("retry
69 Retry count display erase 0 0 success" means that the converter successfully
restarts).

Retry success example Retry failure example (when Pr.67 = "3")

Retry succeeded.

(Pr.68 × 4) s
Pr.68 (6 s at minimum) Pr.68 Pr.68 Pr.68
Converter
Converter operation
operation

0 Time
0
Time Fist retry Second retry Third retry Retry failed
Retry starts. Counter incremented by 1. (E.RET)
Fault occurred. Fault Fault Fault
occurred. occurred. occurred.
Retry success counter Fault signal (ALM) ON

RTY ON RTY ON ON ON
• When the converter protective function is activated (fault indication is displayed) while the retry function is enabled, the retry
function automatically deactivates (resets) the protective function and restarts the operation after a lapse of the time set in Pr.68.
• The retry function is enabled when the Pr.67 setting is other than "0". Set the number of retries at activation of the
protective function in Pr.67.

RDY signal ON
Pr.67 setting Retry times Fault output
state during retry
0 The retry function disabled. — —
Number of times equal to
1 to 10 No. Not held.
Pr.67 setting.
Number of times calculated
101 to 110 by subtracting 100 from Yes. Not held.
Pr.67 setting.
Number of times calculated
1001 to 1010 by subtracting 1000 from No. Held.
Pr.67 setting.
Number of times calculated
1101 to 1110 by subtracting 1100 from Yes. Held.
Pr.67 setting.
 The signal will be held when a protective function with fault indication of E.OCT, E.OVT, or E.CDO occurs.

102 PARAMETERS
 Parameter details

• When retries fail consecutively more than the number of times set in Pr.67, the protective function (E.RET) is activated to
shut off the converter output. (Refer to the figure of retry failure example.)
• Use Pr.68 to set the delay from a protective function activation to a retry in the range of 0 to 600 seconds.
• The cumulative number of successful restart times made by retries (retry success counter) can be checked by reading the
Pr.69 value.
The retry counter (Pr.69 value) is incremented by 1 every time a retry succeeds. Retry is regarded as successful when
normal operation restarts and continues with no other faults for the time set in Pr.68 multiplied by four (6 seconds at least.)
(When retry is successful, the cumulative number of retry failures is cleared.)
• Writing "0" in Pr.69 clears the cumulative count.
• During a retry, the RTY signal is ON. For the RTY signal, assign the function by setting "64 (forward action)" or "164
(reverse action)" in any of Pr.192 to Pr.194, or Pr.196 (Output terminal function selection).
• Faults which trigger the retry operation can be selected with Pr.65. The faults not described in the following table do not
enable the retry function. (For the fault details, refer to page 153.)
"●" indicates the fault selected.

Retry- Pr.65 setting

triggering
0 1 2 3 4 5
fault
E.OCT ● ● ● ● ●
E.OVT ● ● ● ●
E.THT ●
E.IPF ● ●
E.UVT ● ●
E.ILF ● ●
E.BE ● ●
E.OHT ●
E.OPT ● ●
E.PE ● ●
E.CDO ● ●
E.8 ● ●

NOTE
• Changing the terminal assignment using Pr.192 to Pr.194, or Pr.196 may affect the other functions. Set parameters after
confirming the function of each terminal.
• Only the first fault is recorded in the fault history during retries.
• If a fault that does not trigger a retry occurs during retry operation, the converter output is shut off after the retry operation is
finished.
• The fault reset by the retry function does not reset the accumulated data such as the electronic thermal relay function data.
(The reset result is different from the power-ON reset.)
5
CAUTION
 Stay away from the motor and machine when the converter shuts off its output while the retry
function is enabled. Motor and machine will start suddenly (after the reset time has elapsed) after the
shutoff.

PARAMETERS 103
Parameter details

5.4.11 Reset selection / disconnected PU detection /

PU stop selection (Pr.75)
The reset input acceptance, disconnected PU (FR-DU08/FR-PU07) connector detection function, and PU stop function
can be selected.

Pr. Name Initial value Setting range Description

Reset selection/disconnected For the initial setting, reset is always
0 to 3, 14 to 17, 100
75 PU detection/PU stop 14 enabled, without disconnected PU
to 103, 114 to 117
selection detection, and with the PU stop function.
• Pr.75 can be set any time. The setting does not return to its initial values even if Parameter clear / All parameter clear is
executed.
Pr.75
Reset selection Disconnected PU detection PU stop selection
setting
0, 100 Reset input is always enabled.
Operation continues even when PU is
Reset input is enabled only when the
1, 101 disconnected. Operation cannot be stopped by
protective function is activated.
2, 102 Reset input is always enabled. using .
Converter output is shut off when PU is
Reset input is enabled only when the
3, 103 disconnected.
protective function is activated.
14 (initial
value), Reset input is always enabled.
Operation continues even when PU is
114
disconnected. Operation can be stopped by using
Reset input is enabled only when the
15, 115
protective function is activated. .
16, 116 Reset input is always enabled.
Converter output is shut off when PU is
Reset input is enabled only when the disconnected.
17, 117
protective function is activated.

 Setting Pr.75 = any of "100 to 103 and 114 to 117" enables the reset limit function.

Reset selection
• The conditions where the reset command can input (using the RES signal or through communication) can be selected.
• When Pr.75 is set to any of "1, 3, 15, 17, 101, 103, 115, and 117", the reset input is enabled only when the protective
function is activated.

NOTE
• When the RES signal is input during operation, the inverter is also reset. The motor coasts since the inverter being reset
shuts off the output. Also, the cumulative value of the electronic thermal O/L relay is cleared.
• The reset input by using the reset key on the parameter unit is enabled only when the protective function is activated,
regardless of the Pr.75 setting.

Disconnected PU detection
• If the PU (FR-DU08/FR-PU07) is detected to be disconnected from the converter for 1 second or longer while Pr.75 = "2, 3,
16, 17, 102, 103, 116, or 117", PU disconnection (E.PUE) is displayed and the converter output is shut off.

NOTE
• When the PU has been disconnected since before power-ON, the output is not shut off.
• To restart operation, make sure that the PU is connected and then reset the converter.
• When RS-485 communication operation is performed through the PU connector, the reset selection / PU stop selection
function is enabled but the disconnected PU detection function is disabled.

PU stop selection

• The converter operation can be stopped by pressing on the PU when Pr.75 = "14 to 17 or 114 to 117".

• When the operation is stopped by the PU stop, the warning indication "PS" is displayed on the PU. A fault output is not
provided.

104 PARAMETERS
 Parameter details

How to restart operation stopped by using on the PU ("PS" (PU

stop) warning reset method)
• For the operation panel (FR-DU08)
(a) Turn ON the SOF signal to stop the converter operation.

(b) Press . (The PS warning is reset.)

(c) Turn OFF the SOF signal to restart the converter operation.
• For the parameter unit (FR-PU07)
(a) Turn ON the SOF signal to stop the converter operation.

(b) Press . (The PS warning is reset.)

(c) Turn OFF the SOF signal to restart the converter operation.
Converter
output

Time
key
PU
key
OFF ON OFF
SOF

Stop/restart example for External operation

• The converter is also restarted after performing the reset by turning OFF and ON the power or inputting the RES signal.

Reset limit function

• When Pr.75 = any of "100 to 103 and 114 to 117", if an electronic thermal O/L relay or an overcurrent protective function
(E.THM or E.OCT) is activated while either of them has been already activated within 3 minutes, the converter does not
accept any reset command (RES signal, etc.) for about 3 minutes from the second activation.

NOTE
• Resetting the converter power (turning OFF the control power) clears the accumulated thermal value.
• When the retry function is set enabled (Pr.67 Number of retries at fault occurrence ≠ "0"), the reset limit function is
disabled.

CAUTION
 Do not reset the converter while the inverter start signal is being input. Doing so will cause a sudden
start of the motor, which is dangerous.

PARAMETERS 105
Parameter details

5.4.12 Parameter write disable selection (Pr.77)

Whether to enable the parameter write or not can be selected. Use this function to prevent parameter values from being
rewritten by misoperation.

Pr. Name Initial value Setting range Description

1 Parameter write is disabled.
77 Parameter write selection 2 Parameter write is enabled regardless of
2
operation status.
Pr.77 can be set at any time regardless of the operation status.

Parameter write disabled (Pr.77 = "1")

• Parameter write is disabled. Pr. Name
(Parameter read is enabled.) Reset selection/disconnected PU detection/PU stop
75
selection
• Parameter clear and All parameter clear are also disabled.
77 Parameter write selection
• The parameters listed in the table at right can be written
even if Pr.77 = "1".

Parameter write enabled during operation (Pr.77 = "2")

• Parameters can always be written.
• The following parameters cannot be written during operation even if Pr.77 = "2". To change the parameter setting value,
stop the operation.

Pr. Name
170 Watt-hour meter clear
178 STF terminal function selection
179 STR terminal function selection
180 RL terminal function selection
181 RM terminal function selection
182 RH terminal function selection
183 RT terminal function selection
184 AU terminal function selection
185 JOG terminal function selection
186 CS terminal function selection
187 MRS terminal function selection
188 STOP terminal function selection
189 RES terminal function selection
190 RDY signal logic selection
191 RSO signal logic selection
192 IPF terminal function selection
193 OL terminal function selection
194 FU terminal function selection
196 ABC2 terminal function selection
328 Inverter/converter switching

106 PARAMETERS
 Parameter details

5.4.13 Current control (Pr.82 and Pr.83)

Use this function to control current output from the converter as commanded.
Operation can be stable enough with these parameters in the initial setting, however, some adjustments may be
required if current vibration occurs depending on the conditions of the power supply or connected inverters.

Initial
Pr. Name Setting range Description
value
Set the proportional gain for the current control.
Current control
82 100% 0 to 200% Increasing the setting value reduces the current fluctuation
proportional gain caused by external disturbance.
Set the integral gain for the current control.
Current control integral Increasing the setting value shortens the recovery time
83 100% 0 to 200%
gain from the current fluctuation caused by external
disturbance.
• Adjust the fluctuation range of current by setting Pr.82.
Increasing the setting value reduces the current fluctuation caused by external disturbance.
• Adjust the recovery time to the commanded current after a current fluctuation by setting Pr.83.
Increasing the setting value shortens the recovery time from the current fluctuation caused by external disturbance.

NOTE
• Setting Pr.82 too large makes the operation unstable.
• Setting only Pr.83 makes the operation unstable.

5.4.14 Power factor adjustment function (Pr.84 and

Pr.85)
The power factor can be adjusted.

Initial
Pr. Name Setting range Description
value
84 Power factor command value 1 0.8 to 1 Set the power factor command value.
Leading power factor (The phase current leads the
0
phase voltage.)
85 Power factor lead/lag setting 0
Lagging power factor (The phase current lags the
1
phase voltage.)
• To adjust the power factor, set a desired power factor command value in Pr.84.
For example, when "0.8" is set in Pr.84, the applicable inverter capacity of 500 kW will be reduced to 400 kW according to
the following formula.
500 kW (inverter rated capacity) × 0.8 (Pr.84 setting) = 400 kW
• Set Pr.85 = "0 (initial value)" for the leading power factor, and set Pr.85 = "1" for the lagging power factor.
5
NOTE
• Decreasing Pr.84 setting increases the input current, which makes the electronic thermal O/L relay more likely to operate.

PARAMETERS 107
Parameter details

5.4.15 Wiring and configuration of PU connector

Using the PU connector as a computer network port enables communication operation from a personal computer, etc.
When the PU connector is connected with a personal, FA, or other computer by a communication cable, a user program can
run and monitor the converter or read and write to parameters.

PU connector pin-outs

Pin
Name Description
Receptacle on the converter number
(view from below) Earthing (grounding)
1 SG
(connected to terminal 5)
2 — Operation panel power supply
3 RDA Converter receive +
4 SDB Converter send -
5 SDA Converter send +
8 1 6 RDB Converter receive -
Earthing (grounding)
7 SG
(connected to terminal 5)
8 — Operation panel power supply

NOTE
• Pins No. 2 and 8 provide power to the operation panel or parameter unit. Do not use these pins for RS-485 communication.
• Do not connect the PU connector to the computer's LAN board, FAX modem socket or telephone modular connector. The
product could be damaged due to differences in electrical specifications.

108 PARAMETERS
 Parameter details

Wiring and configuration of PU connector communication system

 System configuration
Station No. 0 Station No. 0
Converter Computer Converter
Computer Converter
RS-232C
FR-DU08 Operation panel connector
PU PU
connector PU RS-232C Maximum:
connector RS-485 connector
FR-ADP (option) connector cable 15 m
interface/terminal
RS-232C RS-485
Converter
RJ-45 connector RJ-45 connector
RJ-45 connector RJ-45 connector
Communication cable
Communication cable Communication cable

 Wiring between a computer and a converter for RS-485 communication

Converter
Computer terminal
Cable connection and signal direction
Signal PU connector
Description
name Communication cable
RDA Receive data SDA
RDB Receive data SDB
SDA Send data RDA
SDB Send data RDB
RSA Request to send
RSB Request to send
∗1
CSA Clear to send
CSB Clear to send
0.2 mm2 or more
SG Signal ground SG
FG Frame ground

 Make connection in accordance with the Instruction Manual of the computer to be used with.
Fully check the terminal numbers of the computer since they vary with the model.

NOTE
• Computer-converter connection cable
Refer to the following for the connection cable (RS-232C to RS-485 converter) between the computer with an RS-232C
interface and a converter. Commercially available products (as of February 2015)
Model Manufacturer
Interface embedded cable (for personal computer)
DAFXIH-CAB (D-SUB25P for personal computer) /
DAFXIH-CABV (D-SUB9P for personal computer)
and Diatrend Corp.
Connector conversion cable DINV-485CAB (for converter)
Interface embedded cable dedicated for inverter
DINV-CABV
5
 The conversion cable cannot connect multiple inverters. (The computer and inverter are connected in a 1:1 pair.) This is an RS232C-to-RS485
converter-embedded conversion cable. No additional cable or connector is required. For the product details, contact the manufacturer.

• Refer to the following table when fabricating the cable on the user side.
Commercially available products (as of February 2015).
Product name Model Manufacturer
SGLPEV-T (Cat5e/300m)
Communication cable Mitsubishi Cable Industries, Ltd.
24AWG × 4P
RJ-45 connector 5-554720-3 Tyco Electronics
 Do not use pins No. 2 and 8 of the communication cable.

PARAMETERS 109
Parameter details

5.4.16 Wiring and configuration of RS-485 terminals

RS-485 terminal layout
Terminating resistor switch Name Description
Initially set to "OPEN". RDA1
Set only the terminating resistor Converter receive +
(RXD1+)
switch of the remotest converter
RDB1
to the "100 Ω" position Converter receive -
(RXD1-)
RDA2 Converter receive +
P5S SG SDA1 SDB1 RDA1 RDB1 (RXD2+) (for branch)
(VCC) (GND) (TXD1+) (TXD1-) (RXD1+) (RXD1-)
RDB2 Converter receive -
(RXD2-) (for branch)
OPEN VCC GND + TXD - + RXD - SDA1
Converter send +
(TXD1+)
SDB1
Converter send -
(TXD1-)
SDA2 Converter send +
VCC GND + TXD - + RXD - (TXD2+) (for branch)
100Ω SDB2 Converter send -
(TXD2-) (for branch)
P5S SG SDA2 SDB2 RDA2 RDB2
5V
(VCC) (GND) (TXD2+) (TXD2-) (RXD2+) (RXD2-)
P5S
permissible load current: 100
(VCC)
mA
SG Earthing (grounding)
(GND) (connected to terminal SD)

Connection of RS-485 terminals and wires

• The size of RS-485 terminal block is the same as that of the control circuit terminal block. Refer to page 55 for the wiring
method.

NOTE
• To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.

110 PARAMETERS
 Parameter details

System configuration of RS-485 terminals

• Computer and converter connection (1:1)
Computer Converter Computer Converter

RS-485 RS-485
terminals Maximum: terminals
RS-485 interface/terminal ∗ RS-232C cable 15 m ∗
Converter

Twisted pair cable Twisted pair cable

∗Set the terminating resistor switch to the 100 Ω side.

• Combination of a computer and multiple converters (1:n)

Station No. 0 Station No. 1 Station No. n
Computer Converter Converter Converter

RS-485 RS-485 RS-485

terminals terminals terminals
RS-485 interface/terminal
∗ ∗ ∗
∗ On the converter most remotely
Twisted pair cable connected with the computer, set the
terminating resistor switch in the ON
Station No. 0 Station No. 1 Station No. n
(100 Ω) position.
Computer Converter Converter Converter
RS-232C
connector
RS-485 RS-485 RS-485
Maximum: terminals terminals terminals
RS-232C cable
15 m ∗ ∗ ∗
Converter
∗ On the converter most remotely
connected with the computer, set the
Twisted pair cable terminating resistor switch in the ON
(100 Ω) position.

PARAMETERS 111
Parameter details

RS-485 terminal wiring method

• Wiring between a computer and a converter for RS-485 communication

Computer
RDA
RDB
SDA
SDB
RSA
∗2

+
+
-
-
RSB
∗1
CSA

SDB1
SDA1
RDB1
RDA1
CSB
SG SG
FG

• Wiring between a computer and multiple converters for RS-485 communication

Computer
RDA
RDB
SDA
SDB
RSA
∗2
+
+

+
+

+
+
+

+
-
-

-
-

-
-

-
-

-
-
RSB
∗1
CSA
SDB1
SDA1
SDB2
SDA2
RDB1
RDA1
RDB2
RDA2
SDB1
SDA1
SDB2
SDA2
RDB1
RDA1
RDB2
RDA2

SDB1
SDA1
RDB1
CSB RDA1
SG SG SG SG SG SG
FG Station No. 0 Station No. 1 Station No. n

 Make connection in accordance with the Instruction Manual of the computer to be used with.
Fully check the terminal numbers of the computer since they vary with the model.
 On the converter most remotely connected with the computer, set the terminating resistor switch in the ON (100 Ω) position.

NOTE
• For branching, connect the wires as follows.
VCC TXD RXD VCC TXD RXD

To computer earth (ground) terminal

To computer receive terminal

To computer send terminal To converter receive

of the next converter
To converter send
of the next converter
To earth (ground)
of the next converter

Two-wire type connection

• If the computer is 2-wire type, a connection from the inverter can be changed to 2-wire type by passing wires across
reception terminals and transmission terminals of the RS-485 terminals.

Computer Converter
TXD+
TXD-
Transmission enable
RXD+
RXD-
Reception enable Pass a wire.
SG SG

NOTE
• A program should be created so that transmission is disabled (receiving state) when the computer is not sending and
reception is disabled (sending state) during sending to prevent the computer from receiving its own data.

112 PARAMETERS
 Parameter details

5.4.17 Initial setting of operation via communication

When parameter write is performed via RS-485 communication, the parameters storage device can be changed from
EEPROM + RAM to RAM only. Use this function if parameter settings are changed frequently.

Pr. Name Initial value Setting range Description

Parameter values written by communication are
0
Communication EEPROM written to the EEPROM and RAM.
342 0
write selection Parameter values written by communication are
1
written to the RAM.
• When changing the parameter values frequently, set "1" in Pr.342 to write them to the RAM only.
The life of the EEPROM will be shorter if parameter write is performed frequently with the setting unchanged from "0 (initial
value)" (EEPROM write).

NOTE
• Turning OFF the converter's power supply clears the modified parameter settings when Pr.342 = "1 (write only to RAM)".
Therefore, parameter settings at next power-ON will be the ones that are last stored to EEPROM.
• The parameter setting written in RAM cannot be checked on the operation panel. (The values displayed on the operation
panel are the ones stored in EEPROM.)

5.4.18 Initial settings and specifications of RS-485

communication
Use the following parameters to perform required settings for RS-485 communication between the converter and a
personal computer.
• There are two types of communication, communication using the converter's PU connector and communication using
the RS-485 terminals.
• The Mitsubishi inverter protocol is used. Parameter setting, monitoring, etc. can be performed through
communication.
• To make communication between the personal computer and the converter, setting of the communication
specifications must be made to the converter in advance.
Data communication cannot be made if the initial settings are not made or if there is any setting error.

Parameters related to PU connector communication

Initial
Pr. Name Setting range Description
value
Use this parameter to specify the converter station
number.
PU communication station
117 0 0 to 31 Set the station number for each converter when two
5
number or more converters are connected to one personal
computer.
Set the communication speed.
The setting value × 100 equals the communication
48, 96, 192, 384,
118 PU communication speed 192 speed.
576, 768, 1152
For example, if 192 is set, the communication speed
is 19200 bps.
0 Stop bit length 1 bit
Data length 8 bits
PU communication stop bit 1 Stop bit length 2 bits
119 1
length 10 Stop bit length 1 bit
Data length 7 bits
11 Stop bit length 2 bits
0 Parity check disabled.
PU communication parity
120 2 1 Parity check (odd parity) enabled.
check
2 Parity check (even parity) enabled.

PARAMETERS 113
Parameter details

Initial
Pr. Name Setting range Description
value
Set the permissible number of retries for
unsuccessful data reception. If it is still unsuccessful
0 to 10
PU communication retry after the permissible number of retries, the converter
121 1
stops retrying communication.
count
The converter does not retry communication even
9999
when the communication is unsuccessful.
Set the time delay between data transmission to the
0 to 150 ms
PU communication waiting converter and the response.
123 9999
time setting The time delay is not set in this parameter but in
9999
communication data.
0 Without CR/LF
PU communication CR/LF
124 1 1 With CR
selection
2 With CR/LF

NOTE
• Always reset the converter after making the initial settings of the parameters. After changing the communication-related
parameters, communication cannot be made until the converter is reset.

Parameters related to RS-485 terminal communication

Initial Setting
Pr. Name Description
value range
RS-485 communication Specify the station number of the converter.
331 0 0 to 31
station number (Same specifications as Pr.117)
3, 6, 12, 24,
RS-485 communication 48, 96, 192, Select the communication speed.
332 96
speed 384, 576, 768, (Same specifications as Pr.118)
1152
RS-485 communication
Select the stop bit length and data bit length. (Same
333 stop bit length / data 1 0, 1, 10, 11
specifications as Pr.119)
length
RS-485 communication Select the parity check specifications.
334 2 0, 1, 2
parity check selection (Same specifications as Pr.120)
RS-485 communication Set the permissible number of retries for unsuccessful data
335 1 0 to 10, 9999
retry count reception. (Same specifications as Pr.121)
RS-485 communication 0 to 150 ms, Set the time delay between data transmission to the
337 9999
waiting time setting 9999 converter and the response. (Same specifications as Pr.123)
RS-485 communication Select the presence/absence of CR/LF.
341 1 0, 1, 2
CR/LF selection (Same specifications as Pr.124)

NOTE
• Always reset the inverter after making the initial settings of the parameters. After changing the communication-related
parameters, communication cannot be made until the converter is reset.

114 PARAMETERS
 Parameter details

5.4.19 Mitsubishi inverter protocol (computer link

communication)
• Parameter setting and monitoring, etc. are possible through communication using the Mitsubishi inverter protocol
(computer link communication) via the PU connector or RS-485 terminals on the converter.

Communication specifications
• The communication specifications are shown in the following table.

Related
Item Description
parameter
Communication protocol Mitsubishi inverter protocol (computer link communication) —
Conforming standard EIA-485 (RS-485) —
Pr.117
Number of connectable units 1: N (maximum 32 units), the setting range of station number is 0 to 31.
Pr.331
PU connector Selected among 4800/9600/19200/38400/57600/76800/115200 bps. Pr.118
Communication
Selected among 300/600/1200/2400/4800/9600/19200/38400/57600/
speed RS-485 terminals Pr.332
76800/115200 bps.
Control procedure Asynchronous method —
Communication method Half-duplex system —
Pr.119
Character system ASCII (7 bits or 8 bits can be selected.)
Pr.333
Start bit 1 bit —
Pr.119
Stop bit length 1 bit or 2 bits can be selected.
Communication Pr.333
specifications Pr.120
Parity check Check (at even or odd numbers) or no check can be selected.
Pr.334
Error check Sum code check —
Pr.124
Terminator CR/LF (whether or not to use it can be selected)
Pr.341
Pr.123
Time delay setting Availability of the setting is selectable.
Pr.337

Communication procedure
• In communication between the computer and the converter, the following data is exchanged in the order from a to e.
(a) Request data: sent from the computer to the converter. (The converter will not send data unless requested.)
(b) Communication delay time
(c) Reply data: sent from the converter to the computer in response to the computer request (data a)
(d) Converter data processing time
(e) Answer data: sent from the computer in response to the reply data sent from the converter (data c) (Even if (e) is not sent,
subsequent communication is made properly.)

Computer
For data read 5
↓ (Data flow) ∗2
Converter a d e
Time
Converter b c
↓ (Data flow) ∗1
For data write
Computer

 If a data error is detected and a retry must be made, perform retry operation with the user program. The converter stops retrying and outputs the
LF signal when the number of consecutive retries exceeds the parameter setting.
 On receipt of a data error occurrence, the converter returns reply data (c) to the computer again. The converter stops retrying and outputs the LF
signal when the number of consecutive data errors exceeds the parameter setting.

PARAMETERS 115
Parameter details

Communication operation presence/absence and data format types

• Data communication between the computer and converter uses ASCII codes (hexadecimal codes).
• Communication operation presence/absence (with/without) and data format type (A to F) are as follows.
Parameter/
Parameter
Data Operation monitor Converter reset Monitoring
read
write
Communication request: sent to the converter
a from the computer in accordance with the user A, A1 A B B
program
b Converter data processing time With Without With With
No data error
Reply data from the detected.  C C E, E1 E
c converter (Data a is (Request accepted)
checked for an error.) Data error detected.
D D D D
(Request rejected)
d Computer processing delay time 10 ms or more
No data error
Answer from computer in detected.
Without Without Without (C) Without (C)
response to reply data (No converter
e (data ) processing)
(Data is checked for an Data error detected.
error.) (Converter outputs Without Without F F
data again.)

 In the communication request data from the computer to the converter, the time of 10 ms or more is also required after an acknowledgement
(ACK) signal showing "No data error detected" is sent. (Refer to page 118.)
 Reply from the converter to the converter reset request can be selected. (Refer to page 123.)

• Data writing format

Data a: Communication request data from the computer to the converter

Number of Characters
Format
1 2 3 4 5 6 7 8 9 10 11 12 13
ENQ Instruction
A Station No.  Data Sum check 
 code
ENQ Instruction
A1 Station No.  Data Sum check 
 code
Data c: Reply data from the converter to the computer (No data error detected)
Number of characters
Format
1 2 3 4
ACK
C Station No. 


Data c: Reply data from the converter to the computer (Data error detected)
Number of Characters
Format
1 2 3 4 5
NAK Error
D Station No. 
 code

 A control code.
 The converter station number is specified in hexadecimal in the range of H00 to H1F (stations No. 0 to 31).
 Set the delay time.
When Pr.123 (time delay setting) ≠ 9999, create a communication request data without "waiting time" in the data format. (The number of
characters decreases by 1.)
 CR+LF code
When a computer transmits data to the converter, some computers automatically provide either one or both of the codes CR (carriage return)
and LF (line feed) at the end of a data group. In this case, the same setting is required for data sent from the converter to the computer. Use
Pr.124 (CR/LF selection) for the CR+LF code setting.

116 PARAMETERS
 Parameter details

• Data reading format

Data a: Communication request data from the computer to the converter
Number of Characters
Format
1 2 3 4 5 6 7 8 9
ENQ Instruction
B Station No.  Sum check 
 code

Data c: Reply data from the converter to the computer (No data error detected)
Number of Characters
Format
1 2 3 4 5 6 7 8 9 10 11
STX ETX
E Station No. Read data Sum check 
 
STX ETX
E1 Station No. Read data Sum check 
 

Data c: Reply data from the converter to the computer (Data error detected)
Number of Characters
Format
1 2 3 4 5
NAK Error
D Station No. 
 code

Data e: Transmission data from the computer to the converter

Number of Characters
Format
1 2 3 4
C
ACK
(No data error Station No. 

detected)
F
NAK
(Data error Station No. 

detected)

 A control code.
 The converter station number is specified in hexadecimal in the range of H00 to H1F (stations No. 0 to 31).
 Set the delay time.
When Pr.123 (time delay setting) ≠ 9999, create a communication request data without time delay in the data format. (The number of
characters decreases by 1.)
 CR+LF code
When a computer transmits data to the converter, some computers automatically provide either one or both of the codes CR (carriage return)
and LF (line feed) at the end of a data group. In this case, the same setting is required for data sent from the converter to the computer. Use
Pr.124 (CR/LF selection) for the CR+LF code setting.

PARAMETERS 117
Parameter details

Data definitions
• Control code

Signal
ASCII code Description
name
STX H02 Start Of Text (Start of data)
ETX H03 End Of Text (End of data)
ENQ H05 Enquiry (Communication request)
ACK H06 Acknowledge (No data error detected)
LF H0A Line feed
CR H0D Carriage return
NAK H15 Negative acknowledge (Data error detected)
• Station No.
Specify the station number of the converter which communicates with the computer.
• Instruction code
Specify the processing request, for example, operation or monitoring, given by the computer to the converter. Therefore,
the operation or monitoring an item is enabled by specifying the corresponding instruction code. (Refer to page 123.)
• Data
Read/write data such as parameters transmitted from/to the converter. The definition and range of set data are determined
in accordance with the instruction code. (Refer to page 123.)
• Time delay
Specify the delay time (time period between the time when the converter receives data from the computer and the time
when the converter starts transmission of reply data). Set the delay time in accordance with the response time of the
computer in the range of 0 to 150 ms in 10 ms increments. (For example: 1=10 ms, 2=20 ms)

Computer Converter data processing time

↓ = Delay time + Data check time
Converter (Data setting value × 10 (ms)) (About 10 to 30 ms.
Converter It varies depending on
↓ the instruction code.)
Computer

NOTE
• When Pr.123 (time delay setting) ≠ 9999, create a communication request data without "waiting time" in the data format.
(The number of characters decreases by 1.)
• The data check time varies depending on the instruction code. (Refer to page 119.)
• Sum check code
The sum check code is a 2-digit ASCII (hexadecimal) representing the lower 1 byte (8 bits) of the sum (binary) derived from
the checked ASCII data.
∗Delay time

(Example 1) Sum
Instruction
ENQ Station No. check
Computer → Converter code
code
0 1 E 1 1 0 7 A D F 4 ←Binary code
ASCII code→ H05 H30 H31 H45 H31 H31 H30 H37 H41 H44 H46 H34

↓
H30 + H31 + H45 + H31 + H31 + H30 + H37 + H41 + H44
= H1F4
Sum
∗ When the Pr.123 PU communication waiting time setting is other than "9999",
create the communication request data without delay time in the data format.
(The number of characters decreases by 1.)
(Example 2) Sum
Read data
STX Station No. ETX check
Converter → Computer code
0 1 1 7 7 0 3 0 ←Binary code
ASCII code→ H02 H30 H31 H31 H37 H37 H30 H03 H33 H30

↓
H30 + H31 + H31 + H37 + H37 + H30
= H130
Sum

118 PARAMETERS
 Parameter details

• Error code
If any error is found in the data received by the converter, its error definition is sent back to the computer together with the
NAK code.

Error
Error item Error Description Converter operation
code
The number of errors consecutively detected in communication
H0 Computer NAK error request data from the computer is greater than the permissible
number of retries.
H1 Parity error The parity check result does not match the specified parity.
The sum check code in the computer does not match that of the
H2 Sum check error
data received by the converter.
The data the converter received has a grammatical mistake. Or, The LF signal is output.
data receive is not completed within the predetermined time. CR
H3 Protocol error
or LF code specification is not the same as the setting of the
parameter.
H4 Framing error The stop bit length differs from the parameter setting.
New data has been sent by the computer before the converter
H5 Overrun
completes receiving the preceding data.
H6 — — —
The converter received an unusable character (other than 0 to 9, The converter does not accept
H7 Character error
A to F, and control codes). the data sent to the converter.
H8 — — —
H9 — — —
Parameter write was attempted when the converter does not
perform computer link communication, when the operation
HA Mode error
commands are not given through communication, or when The converter does not accept
parameter write is set to be disabled. the data sent to the converter.
HB Instruction code error The specified instruction code does not exist.
HC Data range error Invalid data has been specified for parameter write, etc.
HD — — —
HE — — —
HF — — —

Response time
Data transmission time (Refer to the following formula.)
Converter data processing time = Delay time + Data check time
(Data setting (Varies dependingon
Computer → Converter value × 10 (ms)) the instruction code.)
Time
Converter → Computer 10 ms or more required.
Data transmission time (Refer to the following formula.)
[Formula for data transmission time]
1
Number of data
Communication Communication specifications (Total number of bits)  = Data transmission time (s)
characters
speed (bps)
 Refer to "page 116" 5
 Communication specifications

Name Number of bits

1 bit/
Stop bit length
2 bits
7 bits/
Data length
8 bits
Enabled 1 bit
Parity check
Disabled 0
In addition to the above, 1 start bit is necessary.
Minimum number of total bits: 9 bits
Maximum number of total bits: 12 bits
 Data check time

Item Check time

Monitoring Less than 12 ms
Parameter read/write Less than 30 ms
Parameter clear / All parameter clear Less than 5 s
Reset command No reply

PARAMETERS 119
Parameter details

Retry count setting (Pr.121, Pr.335)

• Set the permissible number of retries at data receive error occurrence. (Refer to page 119 for data receive error for retry.)
• While any of "0 to 10" is set in the parameter, the converter outputs the Alarm (LF) signal if the number of data receive
errors that occur consecutively exceeds the preset number. (The converter does not stop.)
• While "9999" is set in the parameter, the converter outputs the LF signal if a data transmission error occurs. (The converter
does not stop.)
• To use the LF signal, set "98 (positive logic) or 198 (negative logic)" in any of Pr.192 to Pr.194, Pr.196 (Output terminal
function selection) to assign the function to an output terminal.

Example: PU connector communication when Pr.121 = "1 (initial value)"

ENQ

ENQ
Computer → Converter Illegal Illegal
ACK

NAK

NAK
Converter → Computer

Reception error Reception error

LF OFF ON

Example: PU connector communication when Pr.121 = "9999"

ENQ

ENQ

ENQ
Computer → Converter Illegal Illegal Normal
ACK

NAK

NAK

ACK
Converter → Computer

Reception Reception
error error
LF OFF ON OFF ON OFF

120 PARAMETERS
 Parameter details

Programming instructions
• When data from the computer has any error, the converter does not accept that data. Hence, in the user program, always
insert a retry program for data error.
• Data communication starts when the computer gives a communication request to the converter. The converter does not
send any data without the computer's request. Hence, design the program so that the computer gives a data read request
for monitoring, etc. as required.
• Program example
Performing Parameter clear of the converter
Microsoft® Visual C++® (Ver.6.0) programming example
#include <stdio.h>
#include <windows.h>

void main(void){
HANDLE hCom; // Communication handle
DCB hDcb; // Structure for setting communication
COMMTIMEOUTS hTim; // Structure for setting timeouts

char szTx[0x10]; // Send buffer

char szRx[0x10]; // Receive buffer
char szCommand[0x10];// Command
int nTx,nRx; // For storing buffer size
int nSum; // For calculating sum code
BOOL bRet;
int nRet;
int i;

//Open COM1 port 

hCom = CreateFile("COM1", (GENERIC_READ | GENERIC_WRITE), 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hCom != NULL) {
//Set COM1 port communication 
GetCommState(hCom,&hDcb); // Get current communication information
hDcb.DCBlength = sizeof(DCB); // Set structure size
hDcb.BaudRate = 19200; // Communication speed = 19200 bps
hDcb.ByteSize = 8; // Data length = 8 bits
hDcb.Parity = 2; // Even parity
hDcb.StopBits = 2; // Stop bit = 2 bits
bRet = SetCommState(hCom,&hDcb); // Set the changed communication information
if(bRet == TRUE) {
// Set COM1 port timeout 
GetCommTimeouts(hCom,&hTim); // Get current timeout values
hTim.WriteTotalTimeoutConstant = 1000; // Writing timeout = 1 second
hTim.ReadTotalTimeoutConstant = 1000; // Reading timeout = 1 second
SetCommTimeouts(hCom,&hTim); // Set the changed timeout values
// Set command to perform Parameter clear of the station 1 converter 
sprintf(szCommand,"01FC15A5A"); // Transmission data (Parameter clear)
nTx = strlen(szCommand); // Transmission data size
// Generate sum code 
nSum = 0; // Initialize sum data
for(i = 0;i < nTx;i++) {
nSum += szCommand[i]; // Calculate sum code
nSum &= (0xff); // Mask data
}

// Generate transmission data 

memset(szTx,0,sizeof(szTx)); // Initialize send buffer 5
memset(szRx,0,sizeof(szRx)); // Initialize receive buffer
sprintf(szTx,"\5%s%02X",szCommand,nSum);// ENQ code, transmission data, sum code
nTx = 1 + nTx + 2; // Number of ENQ code, send data, sum code

nRet = WriteFile(hCom,szTx,nTx,&nTx,NULL);
// Send 
if(nRet != 0) {
nRet = ReadFile(hCom,szRx,sizeof(szRx),&nRx,NULL);
// Receive 
if(nRet != 0) {
// Display received data 
for(i = 0;i < nRx;i++) {
printf("%02X ",(BYTE)szRx[i]);// Output received data to console
// ASCII character code is displayed in hexadecimal. Character "0" is represented as hexadecimal "30".
}
printf("\n\r");
}
}
}
CloseHandle(hCom); // Close communication port
}
}

PARAMETERS 121
Parameter details

General flowchart

Port open

Communication setting

Time out setting

Send data processing

Data setting
Sum code calculation
Data transmission

Receive data waiting

Receive data processing

Data retrieval
Screen display

CAUTION
 Data communication is not started automatically but is made only once when the computer provides
a communication request. If communication is disabled during operation due to signal cable
breakage etc., the converter/inverter cannot be controlled.
 Note that the converter does not detect a fault if communication is broken due to signal cable
breakage, computer fault etc.

122 PARAMETERS
 Parameter details

Setting items and set data

• After completion of parameter settings, set the instruction codes and data, then start communication from the computer to
allow various types of operation control and monitoring.

Number of
Read/ Instruction
Item Data description data digits
Write code
(format)
Power supply H0000 to HFFFF: Power supply frequency (hexadecimal) in 0.01 4 digits
Read H6F
frequency Hz increments. (B and E/D)
4 digits
Input current Read H70 H0000 to HFFFF: Input current (hexadecimal) in 0.1 A increments.
(B and E/D)
H0000 to HFFFF: Input voltage (hexadecimal) in 0.1 V 4 digits
Input voltage Read H71
increments. (B and E/D)
H0000 to HFFFF: Data of the monitor item selected with the 4 digits
Special monitor Read H72
instruction code HF3. (B and E/D)
2 digits
Read H73
Special monitor Monitor selection data (Refer to page 96 for details on selection (B and E1/D)
selection No. No.) 2 digits
Write HF3
(A1 and C/D)
H0000 to HFFFF: Two fault records per code.

b15 b8b7 b0
H74 Second latest fault Latest fault

Monitoring
H75 Fourth latest fault Third latest fault

H76 Sixth latest fault Fifth latest fault

H77 Eighth latest fault Seventh latest fault

4 digits
Fault record Read H74 to H77
Fault monitor details (example of the instruction code H74) (B and E/D)

When data read is H3040

(Second latest fault: E.THT)
(Latest fault: E.FIN)
b15 b8 b7 b0
0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0

Second latest fault Latest fault

(H30) (H40)

(Refer to page 151 for details on fault record read data.)

Monitoring of converter 4 digits
Read H79
status (extended) The status of output signals during power/regenerative driving can (B and E/D)
Monitoring of converter be monitored. (For the details, refer to page 125.) 2 digits
Read H7A
status (B and E1/D)
H9696: Resets the converter.
• As the converter is reset after the computer starts
communication, the converter cannot send reply data back to
4 digits
(A and C/D)
5
the computer.
Converter reset Write HFD
H9966: Resets the converter.
• After the computer correctly starts communication and send 4 digits
data to the converter, the converter returns the ACK signal to (A and D)
the computer before being reset.
4 digits
Fault history clear Write HF4 H9696: Fault history is cleared.
(A and C/D)

PARAMETERS 123
Parameter details

Number of
Read/ Instruction
Item Data description data digits
Write code
(format)
Parameters return to initial values.
Whether to clear communication parameters or not can be
selected according to the data. (: Cleared, ×: Not cleared)
Refer to page 190 for Parameter clear, All parameter clear, and
communication parameters.

Communication
Clear type Data
parameters
Parameter clear H9696  4 digits
Write HFC Parameter clear
All parameter clear H5A5A × (A and C/D)

All parameter H9966 

clear H55AA ×
When a clear is performed with H9696 or H9966, the setting of
communication parameters also returns to the initial setting. So,
set the parameters again when resuming the operation.
Performing clear will clear the setting of the instruction codes HF3
and HFF.
Refer to the instruction code list (on page 190) to read/write 4 digits
Read H00 to H63
parameter settings as required. (B and E/D)
Parameter setting
For the setting of Pr.100 or later, the link parameter extended 4 digits
Write H80 to HE3
setting is required. (A and C/D)
Parameter settings are switched (extended) according to a setting 2 digits
Read H7F
Link parameter extended from H00 to H0D. (B and E1/D)
setting For details of the settings, refer to the extended code in the 2 digits
Write HFF
instruction code list (on page 190). (A1 and C/D)
When setting the calibration parameters 2 digits
Read H6C
Second parameter changing H00: Frequency (B and E1/D)
(instruction code HFF = 1, 9) H01: Parameter-set analog value 2 digits
Write HEC
H02: Analog value input from terminal (A1 and C/D)
The model name can be read in ASCII code.
"H20" (blank code) is set for blank area. 20 digits
Model Read H7C
Example) FR-A840-1 (FM type): (B and E3/D)
H46, H52, H2D, H41, H38, H34, H30, H2D, H31, H20, H20...H20
Product
The converter capacity can be read in ASCII code.
profile
Data read is displayed in increments of 0.1 kW (rounded down to
6 digits
Capacity Read H7D one decimal place).
(B and E2/D)
"H20" (blank code) is set for blank area.
Example) 0.75K: "7" (H20, H20, H20, H20, H20, H37)
 Turning OFF the converter power during clearing parameters with H5A5A or H55AA returns the setting of communication parameters to the
initial setting.
 Refer to the calibration parameter list below for details on calibration parameters.

NOTE
• Set 65520 (HFFF0) as a parameter value "8888" and 65535 (HFFFF) as "9999".
• For the instruction codes HFF and HF3, their values are held once they are written but cleared to zero when an converter
reset or all clear is performed.

List of calibration parameters

Instruction code
Pr. Name
Read Write Extended
C8 (930) Current output bias signal 1E 9E 9
C9 (930) Current output bias current 1E 9E 9
C10 (931) Current output gain signal 1F 9F 9
C11 (931) Current output gain current 1F 9F 9

124 PARAMETERS
 Parameter details

Monitoring of converter status

Instruction Bit
Item Description Example
code length
b0: RDY (Inverter run enable)
b1: Power driving
b2: Regenerative driving [Example] H43: Power driving.
Monitoring
b3: RSO (Converter reset) b7 b0
of converter H7A 8 bits
b4: OL (overload)
status 0 1 0 0 0 0 1 1
b5: IPF (Instantaneous power failure)
b6: CVO (converter running)
b7: –
b0: RDY (Inverter run enable)
b1: Power driving
b2: Regenerative driving
b3: RSO (Converter reset)
b4: OL (overload)
[Example 1] H0043: Power driving.
b5: IPF (Instantaneous power failure)
Monitoring b6: CVO (converter running) b15 b0
of converter b7: – 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1
H79 16 bits
status b8: ALM (Fault)
[Example 2] H8100: Stopped due to a fault.
(extended) b9: –
b10: – b15 b0
b11: – 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
b12: –
b13: –
b14: –
b15: Fault occurrence
 The signals indicated in parentheses are assigned in the initial setting. The function changes depending on the setting of Pr.192 to Pr.194, and
Pr.196 (Output terminal function selection).

PARAMETERS 125
Parameter details

5.4.20 PU display language selection

You can switch the display language of the parameter unit (FR-PU07) to another.

Pr. Name Initial value Setting range Description

0 Japanese
1 English
2 German
PU display language 3 French
145 —
selection 4 Spanish
5 Italian
6 Swedish
7 Finnish

5.4.21 Disabling the setting dial and keys on the

operation panel
The keys on the operation panel can be disabled.

Setting
Pr. Name Initial value Description
range
0 The keys are operable.
161 Key lock operation selection 0
10 The keys are inoperable.
• The setting dial and keys on the operation panel can be disabled to prevent unexpected parameter changes.

• Set Pr.161 to "10" and then press for 2 seconds to disable setting dial or key operations.

• When setting dial and key operations are disabled, " " appears on the operation panel. If the setting dial or any key
is used while keys are inoperable, " " appears on the operation panel. (When the setting dial or any key is not
used for 2 seconds, the operation panel switches to the monitor mode.)

• To enable the setting dial and keys again, press for 2 seconds.

NOTE
• Even if setting dial and key operations are disabled, the monitor indication and are enabled.

126 PARAMETERS
 Parameter details

5.4.22 Input terminal function selection (Pr.178 to

Pr.189)
Use the following parameters to select or change the input terminal functions.

Pr. Name Initial value (signal name) Setting range

178 STF terminal function selection 9999 — (No function)
179 STR terminal function selection 9999 — (No function)
180 RL terminal function selection 9999 — (No function)
181 RM terminal function selection 9999 — (No function)
182 RH terminal function selection 9999 — (No function)
183 RT terminal function selection 33 LOH (Reactor overheat protection)
ROH (Inrush current limit resistor 0, 7, 33, 34, 62, 9999
184 AU terminal function selection 34
overheat detection)
185 JOG terminal function selection 9999 — (No function)
186 CS terminal function selection 9999 — (No function)
187 MRS terminal function selection 7 OH (External thermal relay input)
188 STOP terminal function selection 0 SOF (Converter stop)
189 RES terminal function selection 62 RES (Converter reset)

Input terminal function assignment

• Use Pr.178 to Pr.189 to set the functions of the input terminals. Refer to the following table and set the parameters.

Signal Related Refer to

Setting Function
name parameter page
When this signal turns ON, the converter operation stops.
0 SOF Converter stop The converter operation for this signal can be changed by Pr.8 91
using Pr.8.
The signal is input from the external thermal relay. When this
signal turns ON, the protective function (E.OHT) is activated
External thermal
7 OH to stop the converter operation. Pr.9 91
relay input
The converter operation for this signal can be changed by
using Pr.9.
This signal is input from the thermostat of reactors 1 and 2.
Reactor overheat When reactors are overheated and the signal from the
33 LOH — —
protection thermostat turns OFF, the protective function (E.LOH) is
activated to stop the converter operation.
Inrush current limit When this signal turns OFF due to possibility of overheating of
34 ROH resistor overheat the inrush current limit resistor, the protective function (E.IOH) — —
detection is activated to stop the converter operation.
When the RES signal turns ON, the converter reset is
62 RES Converter reset — —
performed.
9999 — No function. — — 5
NOTE
• When a signal (other than the ROH signal or the LOH signal) is assigned to more than one terminals, the function of the
signal will be enabled while any one of the terminals is ON.
• When the ROH signal or the LOH signal is assigned to more than one terminals and any one of the terminals turns OFF, the
protective function E.IOH or E.LOH) remains active to stop the converter operation until all of the signal assigned terminals
turn ON.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.

PARAMETERS 127
Parameter details

5.4.23 Operation selection for the RDY signal and the

RSO signal (Pr.190 and Pr.191)
Use Pr.190 to determine the operation when the signal assigned to terminal RYA on the FR-A8AVP (RDY signal) or the
RDY signal of the converter is output. Use Pr.191 to determine the operation when the signal assigned to terminal RSO
on the FR-A8AVP (RSO signal) or the RSO signal of the converter is output.

Initial Setting
Pr. Name Description
value range
RDY signal logic 0 ON: Inverter run enable (NO contact)
190 0
selection 100 OFF: Inverter run enable (NC contact)
RSO signal logic 1 ON: Converter reset (NO contact)
191 1
selection 101 OFF: Converter reset (NC contact)

• Converter operation determined by the RDY signal status and the Pr.190 setting
Converter operation
RDY signal output
Pr.190 = "0" (NO contact) Pr.190 = "100" (NC contact)
The converter is faulty or the reset
OFF Inverter operation is enabled.
signal is input.
The converter is faulty or the reset
ON Inverter operation is enabled.
signal is input.

• Converter operation determined by the RSO signal status and the Pr.191 setting
Converter operation
RSO signal output
Pr.191 = "1" (NO contact) Pr.191 = "101" (NC contact)
OFF Operation continues. Converter reset.
ON Converter reset. Operation continues.

NOTE
• For the RDY signal, the initial setting is normally-open contact input specification. To change the RDY signal input
specification to normally-closed, select the normally-open contact input specification for the input logic of the X10 signal of
the inverter.

128 PARAMETERS
 Parameter details

5.4.24 Output terminal function selection (Pr.192 to

Pr.194, Pr.196)
Use the following parameters to change the functions of the open collector output terminals and relay output terminals.

Initial
Pr. Name Signal name Setting range
value
IPF terminal function
192 2 IPF (Instantaneous power failure)
selection Open
OL terminal function collector 0 to 5, 7, 8, 16, 25, 26, 32, 64,
193 3 OL (Overload warning)
selection output 68, 90, 95, 98 to 105, 107,
FU terminal function terminal 108, 116, 125, 126, 132, 164,
194 4 CVO (Converter running) 168, 190, 195, 198, 199,
selection
206 to 208, 306 to 308, 9999
Relay
ABC2 terminal
196 output 99 ALM (Fault output)
function selection
terminal

Output signal list

• Functions listed below can be assigned to any of the output terminal.
• Refer to the following table and set the parameters. (0 to 99: Positive logic, 100 to 199: Negative logic)

Setting Refer
Signal Related
Positive Negative Function Operation to
name parameter
logic logic page
0 100 RDY Inverter run enable Output when the inverter is ready. Pr.190 128
1 101 RSO Converter reset Output during a converter reset. Pr.191 128
Instantaneous power Output when the protective function for
2 102 IPF Pr.57 101
failure instantaneous power failure is activated.
3 103 OL Overload alarm Output when the current limit function is active. Pr.22, Pr.23 92
4 104 CVO Converter running Output when the converter is running. — —
Output when the detected bus voltage equals to
5 105 Y5 Output voltage match — —
the commanded bus voltage.
Power supply phase Output when a phase is confirmed after a
7 107 PHS — —
detection completion of the power supply phase detection.
Output when the cumulative electronic thermal
Electronic thermal O/L O/L relay value reaches 85% of the trip level.
8 108 THP — —
relay pre-alarm (Electronic thermal relay protection (E.THT) is
activated when the value reaches 100%.
Output when the IPF signal turns ON. This
Instantaneous power signal is held until a converter reset is performed
16 116 Y16 Pr.44 93
failure detection hold or Pr.44 is set to "0".
Output when the converter is running.
25 125 Fan Fan fault output Output when a fan fault occurs.
Output when the heat sink temperature reaches
Pr.244 131
5
Heat sink overheat pre-
26 126 FIN about 85% of the heat sink overheat protection — —
alarm
operation temperature.
Regenerative drive
32 132 Y32 Output during regenerative driving. — —
recognition
Pr.65,
64 164 RTY During retry Output during retry processing. 102
Pr.67 to Pr.69
24 V external power Output while the converter operated with a 24 V
68 168 EV — 59
supply operation power supplied from an external source.
Output when any of the control circuit capacitor,
Pr.255 to
90 190 Y90 Life alarm main circuit capacitor, inrush current limit circuit, 132
Pr.257
or the cooling fan approaches the end of its life.
Output when Pr.503 reaches the Pr.504 setting
95 195 Y95 Maintenance timer Pr.503, Pr.504 134
or higher.
Output when an alarm (fan fault or 108,
98 198 LF Alarm output Pr.121, Pr.244
communication error warning) occurs. 131
Output when the converter's protective function
99 199 ALM Fault is activated to stop the power output (when the — —
Fault occurs).

PARAMETERS 129
Parameter details

Setting Refer
Signal Related
Positive Negative Function Operation to
name parameter
logic logic page
Cooling fan operation Output when the cooling fan operation is
206 306 Y206 Pr.244 131
command signal commanded.
Output when the temperature of the control
Control circuit
207 307 Y207 circuit board reaches the detection level or Pr.663 135
temperature
higher.
208 308 PS PU stopped Output while the PU is stopped. Pr.75 104
9999 — No function. — — —

130 PARAMETERS
 Parameter details

5.4.25 Cooling fan operation selection

A cooling fan built into the converter can be controlled.

Initial Setting
Pr. Name Description
value range
A cooling fan operates at power ON.
0 Cooling fan ON/OFF control is disabled. (The cooling fan is
always ON at power ON.)
Cooling fan operation
244 1 Cooling fan ON/OFF control is enabled.
selection
The fan is always ON while the converter is running. During a
1
stop, the converter status is monitored and the fan switches
ON/OFF according to the temperature.

Cooling fan always ON (Pr.244 = "0")

• When Pr.244 = "0", the cooling fan operates at power ON. If the fan stops at this time, fan operation is regarded as faulty,
Fan alarm" " (FN) is displayed on the operation panel, and the Fan fault output (FAN) and Alarm (LF) signals are
output.
• For the terminal used for the FAN signal output, set "25 (positive logic)" or "125 (negative logic)" in any of Pr.192 to Pr.194
and Pr.196 (Output terminal function selection), and for the LF signal, set "98 (positive logic)" or "198 (negative logic)".

Cooling fan operation control (Pr.244 = "1 (initial value)")

• The cooling fan operation is controlled when Pr.244 = "1". When the converter is running, the cooling fan operates
constantly. When the converter is stopped, the cooling fan operates depending on the temperature of the converter heat
sink. If the fan stops although it meets the conditions for running, fan operation is regarded as faulty, " " (FN) is
displayed on the operation panel, and the FAN signal and LF signal are output.

Cooling fan operation command (Y206) signal

• The Cooling fan operation command (Y206) signal can be output when the converter cooling fan meets the conditions for
running. The function can be used when the fan installed on the enclosure is synchronized with the converter cooling fan.
• The Y206 signal indicates the operating command condition of the converter cooling fan depending on the power supply
ON/OFF or the Pr.244 settings. The signal does not indicate the actual operation of the cooling fan. (The signal is output
even if the cooling fan is stopped due to a fault.)
• To use the Y206 signal, set "206 (positive logic) or 306 (negative logic)" in any of Pr.192 to Pr.194 and Pr.196 (Output
terminal function selection) to assign the function to the output terminal.

NOTE
• Changing the terminal assignment using Pr.192 to Pr.194 or Pr.196 (Output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.

Parameters referred to 5
Pr.192 to Pr.194, Pr.196 (Output terminal function selection) page 129

PARAMETERS 131
Parameter details

5.4.26 Converter parts life display (Pr.255 to Pr.257)

The degrees of deterioration of main circuit capacitor, cooling fan, and inrush current limit circuit can be diagnosed on
the monitor.
When a part approaches the end of its life, an alarm can be output by self diagnosis to prevent a fault.
(Note that the life diagnosis of this function should be used as a guideline only, the life values are theoretical
calculations.)

Initial Setting
Pr. Name Description
value range
Displays whether or not the parts of the control
(0, 1, 4, 5, 8, 9, circuit capacitor, cooling fan, and inrush current
255 Life alarm status display 0
12, 13) limit circuit have reached the life alarm output
level. Read-only.
Inrush current limit circuit life Displays the deterioration degree of the inrush
256 100% (0 to 100%)
display current limit circuit. Read-only.
Control circuit capacitor life Displays the deterioration degree of the control
257 100% (0 to 100%)
display circuit capacitor. Read-only.
Displays the deterioration degree of the inrush
current limit circuit.
0 to 100% Set "100" after replacing the old FR-A8MC
Inrush current limit circuit life (dedicated circuit parts for inrush current
1202 9999
setting protection) with new one.
No function.
9999
The read value is always "9999".

Life alarm display and signal output (Y90 signal, Pr.255)

• Whether or not the parts of the control circuit capacitor, cooling fan, or inrush current limit circuit have reached the life alarm
output level can be checked with Pr.255 Life alarm status display and the Life alarm (Y90) signal.

bit 15 7 0 ● Read the Pr.255 setting. ● The Pr.255 setting is shown.

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1

bit 0: Control circuit capacitor life Decimal number converted

from binary data is shown.
bit 2: Cooling fan life
bit 3: Inrush current limit circuit fault

Pr.255
bit3 bit2 bit0
Decimal Binary
13 1101   
12 1100   ×
9 1001  × 
8 1000  × ×
5 0101 ×  
4 0100 ×  ×
1 0001 × × 
0 0000 × × ×
: Alarm output, ×: Alarm not output

• The Life alarm (Y90) signal turns ON when any of the control circuit capacitor, cooling fan, and inrush current limit circuit
reaches the life alarm output level.
• For the terminal used for the Y90 signal, set "90" (positive logic) or "190" (negative logic) in any of Pr.192 to Pr.194 and
Pr.196 (Output terminal function selection).

NOTE
• Changing the terminal assignment using Pr.192 to Pr.194 or Pr.196 (Output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.

132 PARAMETERS
 Parameter details

Life display and setting of the inrush current limit circuit (Pr.256, Pr.1202)
• The life of the inrush current limit circuit (relay, contactor, and inrush resistor) is displayed in Pr.256.
• The number of times the contacts of relay, contactor, and thyristor turn ON is counted down from 100% (0 times) by 1%
every 1000 times. When the counter reaches 10% (90000 times), bit 3 of Pr.255 turns ON and the life alarm is output by the
Y90 signal turned ON.
• Use Pr.1202 to set the life of the inrush current limit circuit. Set Pr.1202 = "100" after replacing the old FR-A8MC (dedicated
circuit parts for inrush current protection) with new one.

Life display of the control circuit capacitor (Pr.257)

• The deterioration degree of the control circuit capacitor is displayed in Pr.257.
• In the operating status, the control circuit capacitor life is calculated from the energization time and temperature, and is
counted down from 100%.
When the counter reaches 10%, bit 0 of Pr.255 turns ON and the life alarm is output by the Y90 signal turned ON.

Life display of the cooling fan

• When a cooling fan speed less than approximately 1700 r/min is detected, the fan alarm indication " " (FN) appears on
the operation panel or the parameter unit. When the alarm indication is displayed, bit 2 of Pr.255 turns ON and the life
alarm is output by the Y90 signal turned ON.

NOTE
• The life alarm and the signal are output when the fan speed of any of the cooling fans reaches the detection level.
• For parts replacement, consult the nearest Mitsubishi Electric FA Center.

PARAMETERS 133
Parameter details

5.4.27 Maintenance timer alarm

The Maintenance timer (Y95) signal is output when the converter's cumulative energization time reaches the time
period set with the parameter. MT1, MT2 or MT3 is displayed on the operation panel.
This can be used as a guideline for the maintenance time of peripheral devices (such as the cooling fan of the reactor 1
or reactor 2).

Pr. Name Initial value Setting range Description

Displays the converter's cumulative
energization time in increments of 100
hours (read-only).
503 Maintenance timer 0 0 (1 to 9998) Writing the setting of "0" clears the
cumulative energization time while
Pr.503 = "1 to 9998". (Writing is disabled
when Pr.503 = "0".)
Set the time until the Maintenance timer
Maintenance timer warning 0 to 9998 (Y95) signal is output.
504 9999 MT1 is displayed on the operation panel.
output set time
9999 No function.
686 Maintenance timer 2 0 0 (1 to 9998) The same function as Pr.503.
Maintenance timer 2 warning 0 to 9998 The same function as Pr.504.
687 9999
output set time 9999 MT2 is displayed on the operation panel.
688 Maintenance timer 3 0 0 (1 to 9998) The same function as Pr.503.
Maintenance timer 3 warning 0 to 9998 The same function as Pr.504.
689 9999
output set time 9999 MT3 is displayed on the operation panel.

First power supply ON

9998
(999800h) Set "0" in Pr.503.

Maintenance timer 1
(Pr.503) Pr.504

Time

Y95 signal OFF ON ON

MT1 indication
Operation example of the maintenance timer 1 (Pr.503 and Pr.504)
(with both MT2 and MT3 OFF)
• The cumulative energization time of the converter is stored in the EEPROM every hour and displayed in Pr.503 (Pr.686,
Pr.688) in 100 hours increments. The number indication on Pr.503 (Pr.686, Pr.688) stops at 9998 (999800 hours).
• When the value in Pr.503 (Pr.686, Pr.688) reaches the time (100 hour increments) set in Pr.504 (Pr.687, Pr.689), the
Maintenance timer (Y95) signal is output and the warning indication " " (MT1), " " (MT2), or " " (MT3) is
displayed on the operation panel.
• For the terminal used for the Y95 signal, set "95 (positive logic)" or "195 (negative logic)" to any of Pr.192 to Pr.194 and
Pr.196 (Output terminal function selection).

NOTE
• The Y95 signal turns ON when any of MT1, MT2 or MT3 is activated. It does not turn OFF unless all of MT1, MT2 and MT3
are cleared.
• If all of MT1, MT2 and MT3 are activated, they are displayed in the priority of "MT1 > MT2 > MT3".
• The cumulative energization time is counted every hour. The energization time of less than 1 hour is not counted.
• Changing the terminal assignment using Pr.192 to Pr.194 or Pr.196 (Output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.

Parameters referred to
Pr.192 to Pr.194, Pr.196 (Output terminal function selection) page 129

134 PARAMETERS
 Parameter details

5.4.28 Detection of control circuit temperature

The temperature of the control circuit board can be monitored, and a signal can be output according to a predetermined
temperature setting.

Pr. Name Initial value Setting range Description

Control circuit
663 temperature signal 0°C 0 to 100°C Set the temperature where the Y207 signal turns ON.
output level

Control circuit temperature monitoring

• The temperature of the control circuit board can be monitored within the range of 0 to 100°C on the operation panel, or via
terminal FM/CA, or terminal AM. (Refer to page 96 and 100 for information on how to select the monitor item.)
• When Pr.290 Monitor negative output selection is set to enable display of the negative numbers for monitoring on the
operation panel or via terminal AM, the range of monitoring is -20 to 100°C.
• The monitor value is a rough approximation of the change in the surrounding air temperature of the converter. Use this
parameter to grasp the operating environment of the converter.

Control circuit temperature detection (Pr.663, Y207 signal)

• The Y207 signal can be output when the control circuit temperature reaches the Pr.663 setting or higher.
• For the Y207 signal, set "207 (positive logic) or 307 (negative logic)" in one of Pr.192 to Pr.194 and Pr.196 (Output
terminal function selection) to assign the function to the output terminal.

NOTE
• The Y207 signal is turned OFF when the control circuit temperature becomes 5°C or more lower than the Pr.663 setting.
• Changing the terminal assignment using Pr.192 to Pr.194 or Pr.196 (Output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.

Parameters referred to
Pr.54 FM/CA terminal function selection page 100
Pr.158 AM terminal function selection page 100
Pr.192 to Pr.194, Pr.196 (Output terminal function selection) page 129
Pr.290 Monitor negative output selection page 96

PARAMETERS 135
Parameter details

5.4.29 Adjustment of terminal FM/CA and terminal AM

The output via terminal FM, CA, or AM corresponding to the full-scale value of a meter can be adjusted (calibrated) on
the operation panel or the parameter unit.

Initial value
Pr. Name Setting range Description
FM CA
867 AM output filter 0.01 s 0 to 5 s Set a filter for output via terminal AM.
869 Current output filter — 0.02 s 0 to 5 s Set a filter for output via terminal CA.
Calibrates the scale of the meter
C0 (900) FM/CA terminal calibration — —
connected to terminals FM/CA.
Calibrates the scale of the analog meter
C1 (901) AM terminal calibration — —
connected to terminal AM.
Set the signal value at the minimum
C8 (930) Current output bias signal 0% 0 to 100%
analog current output.
Set the current value at the minimum
C9 (930) Current output bias current 0% 0 to 100%
analog current output.
Set the signal value at the maximum
C10 (931) Current output gain signal 100% 0 to 100%
analog current output.
Set the current value at the maximum
C11 (931) Current output gain current 100% 0 to 100%
analog current output.
 The parameter number in parentheses is the one for use with the parameter unit.

Terminal FM calibration (C0 (Pr.900))

• The terminal FM is preset to output pulses. By setting C0 (Pr.900), the meter connected to the converter can be calibrated
by parameter setting without use of a calibration resistor.
• The pulse train output via terminal FM can be used for digital display on a digital counter. The monitor value is 1440 pulses/
s output at the full-scale value of monitor description list (page 96) (Pr.54 FM/CA terminal function selection).

Indicator
1 mA full-scale
(Digital indicator)
analog meter
1 mA 1440 pulses/s (+) ( )
FM FM
( ) ( ) T1
Calibration
resistor ∗1 8 VDC
SD SD
T2
Pulse width T1: Adjust with C0 (Pr.900).
Pulse cycle T2: Set with Pr.49, Pr.51, Pr.53, Pr.55, or Pr.56
 Not needed when the operation panel or the parameter unit is used for calibration.
Use a calibration resistor when the indicator (frequency meter) needs to be calibrated by a neighboring device because the indicator is located
far from the converter.
However, the frequency meter needle may not deflect to full-scale if the calibration resistor is connected. In this case, perform calibration using
the operation panel or parameter unit.

• Calibrate the output via terminal FM in the following procedure.

1) Connect an indicator (frequency meter) across terminals FM and SD on the converter. (Note the polarity. The terminal
FM is positive.)
2) When a calibration resistor has already been connected, adjust the resistance to "0" or remove the resistor.
3) Set a monitor item in Pr.54 FM/CA terminal function selection. (Refer to page 100.)
When you selected an item that needs full-scale setting, set a voltage or current value at which the output signal will be
1440 pulses/s, using Pr.49, Pr.51, Pr.53, Pr.55, and Pr.56. Normally, at 1440 pulses/s the meter deflects to full-scale.
4) If the meter needle does not point to maximum even at maximum output, calibrate it with C0 (Pr.900)

136 PARAMETERS
 Parameter details

NOTE
• When outputting an item such as the input current, which cannot reach a 100% value easily by operation, set Pr.54 to "21"
(reference voltage output) and calibrate. A pulse train of 1440 pulses/s are output via terminal FM.
• The wiring length to terminal FM should be 200 m at maximum.
• The initial value of the calibration parameter C0 (Pr.900) is set to 1 mA full-scale and 1440 pulses/s terminal FM pulse train
output at 60 Hz. The maximum pulse train output of terminal FM is 2400 pulses/s.
• When connecting a frequency meter between terminals FM-SD and monitoring the running frequency, it is necessary to
change Pr.55 to the maximum frequency, since the FM terminal output will be saturated at the initial value when the
maximum frequency reaches 100 Hz or greater.

Calibration procedure for terminal FM when using the operation panel

(FR-DU08)
Operating procedure
Turning ON the power of the converter
1.
The operation panel is in the monitor mode.
Parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Calibration parameter selection

3.
Turn until " " appears. Press to display " ".

Selecting a parameter

Turn until " " (C0 (Pr.900) FM/CA terminal calibration) appears. Press to enable the parameter
4.
setting.
The monitored value of the item (initially the power supply frequency) selected by Pr.54 FM/CA terminal function selection
will appear.
Scale adjustment
5.
Turn to move the meter needle to a desired position.

Setting completed

Press to enter the setting. The monitored value and " " are displayed alternately.

6. • Turn to read another parameter.

• Press to return to the " " display.

• Press twice to show the next parameter.

NOTE
• Calibration can be performed during operation.
• For the operation from the parameter unit, refer to the Instruction Manual of the parameter unit. 5

PARAMETERS 137
Parameter details

Terminal CA calibration (C0 (Pr.900), C8 (Pr.930) to C11 (Pr.931))

• Terminal CA is initially set to provide a 20 mADC output in the full-scale state of the corresponding monitor item. The
calibration parameter C0 (Pr.900) allows the output current ratio (gains) to be adjusted according to the meter scale. Note
that the maximum output current is 20 mADC.
• Set a value at the minimum current output in the calibration parameters C8 (Pr.930) and C9 (Pr.930). The calibration
parameters C10 (Pr.931) and C11 (Pr.931) are used to set a value at the maximum current output.
• Set the output signal values (output monitor set with Pr.54) at zero or at the maximum current output via terminal CA using
the calibration parameters C8 (Pr.930) and C10 (Pr.931). The full scale for each monitor is 100% at this time.
• Set the output current values (output monitor set with Pr.54) at zero and at the maximum current output via terminal CA
(using the calibration parameters C9 (Pr.930) and C11 (Pr.931). The output current calibrated by the calibration parameter
C0 (Pr.900) is 100% at this time.

Signal value at the maximum analog current output

DC ammeter (C10 (Pr.931))
Analog current output
0 to 20 mADC (CA)
CA
(+) (-) C0 (Pr.900) 20 mA
Current value at the maximum
100% analog current output
(C11 (Pr.931))
5

Output signal
0
Signal value at the minimum analog current output
(C8 (Pr.930))

Current value at the minimum analog current output

(C9 (Pr.930))
• Calibrate the output via terminal CA in the following procedure.
1) Connect a 0-20 mADC indicator (frequency meter) across terminals CA and 5 on the converter. (Note the polarity. The
terminal CA is positive.)
2) Set the initial value of the calibration parameter C8 (Pr.930) to C11 (Pr.931). If the meter needle does not indicate zero
when the current input is at zero, calibrate the meter using C8 (Pr.930) and C9 (Pr.930).
3) Refer to the monitor description list (page 96) and set Pr.54.
When you selected an item that needs full-scale setting, set a power supply frequency or current value at which the
output signal will be 20 mA, using Pr.49, Pr.51, Pr.53, Pr.55, and Pr.56.
4) If the meter needle does not point to maximum even at maximum output, calibrate it with C0 (Pr.900).

NOTE
• When outputting an item such as output current, which cannot reach a 100% value easily by operation, set Pr.54 to "21"
(Reference voltage output) and calibrate. A current of 20 mADC is output via terminal CA.
• The output via terminal CA is enabled even if C8 (Pr.930) ≥ C10 (Pr.931), C9 (Pr.930) ≥ C11 (Pr.931).

Adjusting the response of terminal CA (Pr.869)

• Using Pr.869, the output voltage response of terminal CA can be adjusted in the range of 0 to 5 seconds.
Increasing the setting stabilizes the output via terminal CA more but reduces the response level. (Setting "0" sets the
response level to 7 ms.)

138 PARAMETERS
 Parameter details

Calibration of terminal AM (C1 (Pr.901))

• Terminal CA is initially set to provide a 10 VDC output in the full-scale state
Converter of the corresponding monitor item. The calibration parameter C1 (Pr.901)
AM AM terminal calibration allows the output voltage ratio (gains) to be
10 VDC adjusted according to the meter scale. Note that the maximum output
voltage is 10 VDC.
5

• Calibrate the terminal FM in the following procedure.

1) Connect a 0-10 VDC indicator (frequency meter) across terminals AM and 5 of the converter. (Note the polarity. The
terminal AM is positive.)
2) Refer to the monitor description list (page 96) and set Pr.158 AM terminal function selection.
When you selected an item that needs full-scale setting, set a power supply frequency or current value at which the
output signal will be 10 V, using Pr.49, Pr.51, Pr.53, Pr.55, and Pr.56.
3) If the meter needle does not point to maximum even at maximum output, calibrate it with C1 (Pr.901).

NOTE
• When outputting an item such as input current, which cannot reach a 100% value easily by operation, set Pr.158 to "21"
(reference voltage output) and calibrate. A voltage of 10 VDC is output via terminal AM.
• Use Pr.290 Monitor negative output selection to enable negative signals output via terminal AM. The output voltage range
is -10 to +10 VDC. Calibrate the maximum positive value output via terminal AM.

Adjusting the response of terminal AM (Pr.867)

• Use Pr.867 to adjust the output voltage response of the terminal AM in the range of 0 to 5 seconds.
• Increasing the setting stabilizes the output via terminal AM more but reduces the response level. (Setting "0" means the
setting of the response level to 7 ms.)

Parameters referred to
Pr.54 FM/CA terminal function selection page 100
Pr.55 Bus voltage monitoring reference page 94
Pr.56 Current monitoring reference page 94
Pr.158 AM terminal function selection page 100
Pr.290 Monitor negative output selection page 96

5.4.30 Free parameter

Any number within the setting range of 0 to 9999 can be input.
For example, these numbers can be used:
• As a unit number when multiple units are used.
• As a pattern number for each operation application when multiple units are used.
5
• As the year and month of introduction or inspection.

Pr. Name Initial value Setting range Description

888 Free parameter 1 9999 0 to 9999
Any value can be input. Data is held even
if the converter power is turned OFF.
889 Free parameter 2 9999 0 to 9999

NOTE
• Pr.888 and Pr.889 do not influence the operation of the converter.

PARAMETERS 139
Parameter details

5.4.31 Beep control

The PU (operation panel or parameter unit) key sound and buzzer can be turned ON/OFF.

Pr. Name Initial value Setting range Description

0 Turns the key sound and buzzer OFF.
990 PU buzzer control 1
1 Turns the key sound and buzzer ON.

NOTE
• When the buzzer is set to ON, a warning sound will be audible when a fault occurs.

5.4.32 PU contrast adjustment

Contrast of the LCD on the parameter unit (FR-PU07) can be adjusted.
Decreasing the setting value lowers the contrast.

Pr. Name Initial value Setting range Description

991 PU contrast adjustment 58 0 to 63 0: Lowest → 63: Highest
The above parameter is displayed as a simple mode parameter only when the parameter unit (FR-PU07) is connected.

5.4.33 Initiating a protective function

A fault (protective function) is initiated by setting the parameter.
This function can be used to check how the system operates at activation of a protective function.

Initial Setting
Pr. Name Description
value range
The setting range is same with the one for fault data codes of
16 to 253 the converter (which can be read through communication).
997 Fault initiation 9999 Written data is not stored in EEPROM.
The read value is always "9999".
9999
The protective function is not activated with this setting.
• To initiate a fault (protective function), set the assigned number of the protective function you want to initiate in Pr.997.
• The value set in Pr.997 is not stored in EEPROM.
• When the protective function is activated, the inverter output is shut off, and the converter displays a fault and outputs the
Fault (ALM) signal.
• While the initiated fault is occurring, the fault is displayed as the latest fault in the fault history. After a reset, the fault history
goes back to the previous status. (The protective function generated by the fault is not saved in the fault history.)
• Perform converter reset to cancel the protective function.
• For the selectable parameter by Pr.997 and the corresponding protective functions, refer to page 151.

NOTE
• If a protective function is already operating, no fault can be activated by Pr.997.
• The retry function is disabled when a protective function has been initiated by the fault initiation function.
• If a fault occurs after a protective function has been activated, the protective function indication does not change. The fault is
not saved in the fault history either.

140 PARAMETERS
 Parameter details

5.4.34 Simple clock function

The time can be set. The time can only be updated while the converter power is ON.

Initial
Pr. Name Setting range Description
value
1006 Clock (year) 2000 2000 to 2099 Set the year.
101 to 131, 201 to 228,
(229), 301 to 331, 401 to Set the month and day.
430 , 501 to 531, 601 to 1000 and 100 digits: January to December
101
1007 Clock (month, day) 630, 701 to 731, 801 to 10 and 1 digits: 1 to the end of month (28, 29, 30
(January 1)
831, 901 to 930, 1001 to or 31)
1031, 1101 to 1130, 1201 For December 31, set "1231".
to 1231
0 to 59, 100 to 159, 200
to 259, 300 to 359, 400 to
459, 500 to 559, 600 to
659, 700 to 759, 800 to
859, 900 to 959, 1000 to
Set the hour and minute using the 24-hour clock.
1059, 1100 to 1159, 1200
0 1000 and 100 digits: 0 to 23 hours
1008 Clock (hour, minute) to 1259, 1300 to 1359,
(00:00) 10 and 1 digits: 0 to 59 minutes
1400 to 1459, 1500 to
For 23:59, set "2359".
1559, 1600 to 1659, 1700
to 1759, 1800 to 1859,
1900 to 1959, 2000 to
2059, 2100 to 2159, 2200
to 2259, 2300 to 2359

• When the year, month, day, time and minute are set in Pr.1006 to Pr.1008, the converter unit counts the date and time. The
date and time can be checked by reading Pr.1006 to Pr.1008.

NOTE
• The clock's count-up data is saved in the converter's EEPROM every 10 minutes.
• The clock does not count up while the control circuit power supply is OFF. The clock function must be reset after turning ON
the power supply. Use a separate power supply, such as an external 24 V power supply, for the control circuit of the simple
clock function, and supply power continuously to this control circuit.
• In the initial setting, converter reset is performed if supplying power to the main circuit is started when power is supplied only
to the control circuit. Then, the clock information stored in EEPROM is restored.
• The set clock is also used for functions such as fault history.

PARAMETERS 141
Parameter clear / All parameter clear on the operation panel

5.5 Parameter clear / All parameter clear on the

operation panel
POINT
• Set "1" to Pr.CLR Parameter clear or ALL.CL All parameter clear to initialize all parameters. (Parameters cannot be
cleared when Pr.77 Parameter write selection = "1".)
• Pr.CLR does not clear calibration parameters or the terminal function selection parameters.
• For availability of the Parameter clear or All parameter clear operation for each parameter, refer to the parameter list on page
190.

Operating procedure
Turning ON the power of the converter
1.
The operation panel is in the monitor mode.
Selecting the parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting a parameter
3. Turn to " " for Parameter clear or turn it to " " for All parameter clear, and press ." (initial
value)" appears.
Parameter clear

Turn to change the set value to " ". Press to enter the setting. " " and " or " are dis-
played alternately after parameters are cleared.

4. •Turn to read another parameter.

•Press to show the setting again.

•Press twice to show the next parameter.

Description
Setting
Pr.CLR Parameter clear ALL.CL All parameter clear
0 Initial display (Parameters are not cleared.)
The settings of parameters except for calibration The settings of all the parameters, including
1 parameters and terminal function selection calibration parameters and terminal function
parameters are initialized. selection parameters, are initialized.

142 PARAMETERS
 Copying and verifying parameters on the operation panel

5.6 Copying and verifying parameters on the

operation panel
Pr.CPY setting Description
0.--- Initial display
1.RD Read the parameters from the source converter and store them to the operation panel.
Write the parameters copied to the operation panel into the destination high power factor
2.WR
converter.
3.VFY Verify parameters in the converter and those in the operation panel. (Refer to page 145.)

NOTE
• When the copy destination is other than the FR-A842 converter or when Parameter copy is attempted after the parameter

copy reading was stopped, the product series error indication " " appears.
• Refer to the parameter list on page 190 for the availability of parameter copy.
• When the power is turned OFF or an operation panel is disconnected, etc. during parameter copy writing, perform parameter
copy writing again or check the setting values by using parameter verification.
• If parameters are copied from a not-upgraded converter to an upgraded converter that has additional parameters due to
upgrade, out-of-range setting values may be written in some parameters. In that case, those parameters operate as if they
were set to initial values.

5.6.1 Parameter copy

• Parameter settings in a converter can be copied to another converter.

Reading the parameter settings in the converter and storing them in the
operation panel
Operating procedure
1. Connect the operation panel to the source converter.
Selecting the parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting a parameter

3. Turn to " " (Parameter copy), and press .

" " appears.

Reading to the operation panel

4. Turn to change the set value to " ". Press to start reading the parameter settings from the converter and stor-

ing them in the operation panel. (It takes about 30 seconds to read and store all the settings. During reading, " " blinks.) 5
End of reading
5.
" " and " " are displayed alternately after the reading is completed.

NOTE
• " " appears... Why?
- Parameter read error. Perform operation from Step 3 again.

PARAMETERS 143
Copying and verifying parameters on the operation panel

Writing parameter settings stored in the operation panel to the converter

Operating procedure
1. Connect the operation panel to the target converter.
Selecting the parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting a parameter

3. Turn to " " (parameter copy), and press .

" " appears.

Selecting parameter write

4. Turn to change the set value to " ", then press .

" " appears.

Writing to the converter

Press to start writing the parameter settings stored in the operation panel to the converter. (It takes about 60 seconds to
5.
write all the settings. During writing, " " blinks.)
● Perform this step while the converter is stopped. (Parameter settings cannot be copied during operation.)
End of copying
6.
" " and " " are displayed alternately after copying ends.
7. When parameters are written to the target converter, reset the converter before operation by, for example, turning the power OFF.

NOTE
• " " appears... Why?
- Parameter write error. Perform operation from Step 3 again.

144 PARAMETERS
 Copying and verifying parameters on the operation panel

5.6.2 Parameter verification

• Whether the parameter settings of converters are the same or not can be checked.

Operating procedure
1. Copy the parameter settings in the verification source converter to the operation panel according to the procedure on page 143.
2. Detach the operation panel from the source converter and attach it to the verification target converter.
Turning ON the power of the converter
3.
The operation panel is in the monitor mode.
Selecting the parameter setting mode
4.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting a parameter

5. Turn to " " (Parameter copy), and press .

" " appears.

Parameter verification

Turn to change the setting value to " " (Parameter copy verification).

Press . Verification of the parameter settings copied to the operation panel and the parameter settings in the verification tar-
6.
get converter is started. (It takes about 60 seconds to verify all the settings. During verification, " " blinks.)

● If there are different parameters, the different parameter number and " " are displayed alternately.

● To continue verification, press .

7. " " and " " are displayed alternately after verification ends.

NOTE
• " " blinks... Why?

- The set frequency may be incorrect. To continue verification, press .

PARAMETERS 145
Checking parameters changed from their initial values (initial value change list)

5.7 Checking parameters changed from their

initial values (initial value change list)
Parameters changed from their initial values can be displayed.

Operating procedure
Turning ON the power of the converter
1.
The operation panel is in the monitor mode.
Selecting the parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting a parameter

3. Turn to " " (Initial value change list), and press .

" " appears.

Checking the Initial value change list

Turn . The parameter numbers that have been changed from their initial value appear in order.

● When is pressed with a changed parameter displayed, the setting change process of the parameter starts. (Parameter
4.
numbers are no longer displayed in the list when they are returned to their initial values.)

Other changed parameters appear by turning .

● The indication returns to " " when the last changed parameter is displayed.

NOTE
• The calibration parameters (C0 (Pr.900), C1 (Pr.900), C8 (Pr.930) to C11 (Pr.931)) are not displayed even when these are
changed from the initial settings.
• Parameter setting using the initial value change list is also possible.

146 PARAMETERS
 6 PROTECTIVE
FUNCTIONS

This chapter explains the protective functions in the converter.

Always read the instructions before use.

6.1 Converter fault and indication .................................................148

6.2 Reset method for the protective functions.............................148
6.3 Check and clear of the fault history ........................................149
6.4 List of indications .....................................................................151
6.5 Causes and corrective actions ................................................153
6.6 Check first when you have a trouble ......................................162

PROTECTIVE FUNCTIONS 147

Converter fault and indication

6.1 Converter fault and indication

When a fault occurs in the converter, a protective function is automatically activated to shut off the converter output and show
an indication on the PU.
If the fault does not correspond to any of the following faults or if you have any other problem, please contact your sales
representative.
• Indication: When a protective function is activated, the display on the operation panel automatically shows an indication.
• Resetting: While a protective function is activated, the converter output is kept shutoff. Reset the converter to restart the
operation. (Refer to page 148.)
• When any protective function is activated, take an appropriate corrective action before resetting the converter to resume
the operation.
Failure to do so may break or damage the converter.

The converter indications are roughly categorized as follows.

• Error message
A message regarding operational fault or setting fault on the operation panel is displayed. The converter output is not shut
off.
• Warning
The converter output is not shut off even when a warning is displayed on the operation panel. However, failure to take
appropriate measures will lead to a fault.
• Alarm
The converter output is not shut off. The Alarm (LF) signal can be output depending on the parameter setting.
• Fault
When a protective function is activated, the converter output is shut off and the Fault (ALM) signal is output.

6.2 Reset method for the protective functions

How to reset the converter
Reset the converter by performing any of the following operations. Note that the internal accumulated heat value of the
electronic thermal relay function and the number of retries are cleared (erased) by resetting the converter.
The converter recovers about 1 second after the reset is released.

• On the operation panel, press to reset the converter.

(This method is available only when a fault occurs. Refer to page
156 for details of faults.)

• Switch OFF the converter power once, then switch it ON again. ON

OFF

• Turn ON the Reset (RES) signal and keep it ON for more than 0.1
Converter
seconds. (If the RES signal is kept ON, "Err" appears (blinks) to
indicate that the converter is in a reset status.)
RES
SD

148 PROTECTIVE FUNCTIONS

 Check and clear of the fault history

6.3 Check and clear of the fault history

Check and clear of the fault history
Monitor mode Parameter setting mode Function mode

[Operation for displaying fault history]

The last eight faults can be displayed.
(On the display of the last fault record (fault record 1), a decimal point LED is ON.)

Power supply frequency Input current∗1

Blinking Blinking
Fault record 1∗3

Time Input voltage

Blinking Blinking

Press the setting dial.

Fault record number

Date Cumulative energization time∗2

Latest fault

Fault record 2∗3 Fault record number Blinking Blinking

Second latest fault

Press the setting dial.

Month Year

Fault record 8∗3 Fault record numbver

Blinking Blinking

6
Eighth latest fault
When there is no fault
history, "E0" is displayed. Press the setting dial.

 When an overcurrent trip occurs by an instantaneous overcurrent, the monitored current value saved in the fault history may be lower than the
actual current that has flowed.
 The cumulative energization time and actual operation time are accumulated from 0 to 65535 hours, then cleared, and accumulated again from 0.
 When the converter is used as an inverter before conversion, fault records are displayed for both before and after the conversion (the indication
can be switched for up to eight records).
(After the eighth fault occurs in the converted converter, only the converter's fault records will be displayed.)

PROTECTIVE FUNCTIONS 149

Check and clear of the fault history

Clearing procedure
POINT
• Set "1" in Err.CL Fault history clear to clear the fault history.

Operating procedure
Turning ON the power of the converter
1.
The operation panel is in the monitor mode.
Parameter setting mode
2.
Press to choose the parameter setting mode. (The parameter number read previously appears.)

Selecting the parameter number

3. Turn until " " (Fault history clear) appears. Press to read the present set value. " (initial value)"
appears.
Fault history clear

Turn to change the set value to " ". Press to start clear.

" " and " " are displayed alternately after the fault history is cleared.
4.
•Turn to read another parameter.

•Press to show the setting again.

•Press twice to show the next parameter.

150 PROTECTIVE FUNCTIONS

 List of indications

6.4 List of indications

If any indication which is not shown in the following list of indications appears or if you have any other problem, please contact
your sales representative.

Error message
A message regarding operational troubles is displayed. The
Fault
converter output is not shut off. • When a protective function is activated, the converter
output is shut off and the Fault (ALM) signal is output.
Operation Refer Output of the connected inverters are also shut off.
panel Name to • The data code is used for checking the fault via
indication page
communication or for setting Pr.997 Fault initiation.
Operation panel lock 153
Operation Refer
Parameter write error 153 Data
panel Name to
code
to indication page
Copy operation fault 153
19
Overcurrent trip 156
(H13)
Error 154 35
Overvoltage trip 156
(H23)
Warning Overload trip (electronic 48
156
thermal relay function) (H30)
• Output is not shut off when a protective function is
64
activated. Heat sink overheat 156
(H40)
80
Operation Refer Instantaneous power failure 157
(H50)
panel Name to 81
Undervoltage 157
indication page (H51)
82
Overload signal detection 154 Input phase loss 157
(H52)
Electronic thermal O/L relay pre-alarm 154 External thermal relay 144
157
operation (H90)
Power supply not detected 155 160
Option fault 157
(HA0)
PU stop 155 171
Invalid version 158
(HAB)
SA 155
176
Parameter storage device fault 158
to (HB0)
Maintenance timer 1 to 3 155 177
PU disconnection 158
(HB1)
178
Retry count excess
Alarm (HB2)
158

179
• Output is not shut off when a protective function is Parameter storage device fault 158
(HB3)
activated. An alarm can also be output with a parameter 183
Reactor overheat 158
setting. (HB7)
192
Operation Refer
6
(HC0)
panel Name to 245
indication page (HF5)
CPU fault 159
246
Fan alarm 155 (HF6)
247
(HF7)
Operation panel power supply
193
short circuit / RS-485 terminals 159
(HC1)
power supply short circuit
194
24 VDC power fault 159
(HC2)
197
Inrush current limit circuit fault 159
(HC5)
201
Safety circuit fault 160
(HC9)

PROTECTIVE FUNCTIONS 151

List of indications

Operation Refer
Data
panel Name to
code
indication page
202
(HCA)
Internal circuit fault 160
253
(HFD)
241
(HF1)
242
Option fault 160
(HF2)
243
(HF3)
248
Input power supply fault 160
(HF8)

Others
The fault history or the operation status of the converter is
notified. It is not a fault indication.

Operation Refer
panel Name to
indication page
Fault history 148

No fault history 161

24 V external power supply operation 161

If any indications other than the above appear, contact your

sales representative.

152 PROTECTIVE FUNCTIONS

 Causes and corrective actions

6.5 Causes and corrective actions

Error message
A message regarding operational troubles is displayed. The converter output is not shut off.

Operation panel
HOLD
indication
Name Operation panel lock

Operation lock is set. Operation other than is invalid.

Description
(Refer to page 126.)
Check point

Corrective action Press for 2 seconds to release the lock.

Operation panel
Er1
indication
Name Parameter write error
• Parameter setting was attempted while Pr.77 Parameter write selection is set to disable parameter write.
Description • The PU and the converter cannot make normal communication.
• An attempt is made to change the setting of a parameter that cannot be changed during converter operation.
• Parameter write was attempted while Pr.77 Parameter write selection = "1". (Refer to page 106.)
Check point • Check for a connection failure between the PU and the converter.
• Check that the converter is stopped.
• Set Pr.77 Parameter write selection = "2" and retry.
Corrective action • Check the connection of the PU and the converter.
• After stopping the operation, make parameter setting.

Operation panel
rE1
indication
Name Parameter read error
A failure has occurred at EEPROM in the operation panel during reading of the parameter settings for
Description
Parameter copy.
Check point
• Perform Parameter copy again. (Refer to page 143.)
Corrective action
• The operation panel (FR-DU08) may be faulty. Contact your sales representative.

Operation panel
rE2
indication
Name Parameter write error
A failure has occurred at EEPROM in the operation panel during writing of the parameter settings for
Description
Parameter copy.
Check point The [FWD] or [REV] LED indicator on the operation panel (FR-DU08) is blinking.
Corrective action The operation panel (FR-DU08) may be faulty. Contact your sales representative.

Operation panel
indication
rE3 6
Name Parameter verification error
• The data in the converter are different from the data in the operation panel.
Description
• A failure has occurred at EEPROM in the operation panel during parameter verification.
Check point Check the parameter setting of the source converter against the setting of the target converter.

• Continue the verification by pressing .

Corrective action
Perform the parameter verification again. (Refer to page 145.)
• The operation panel (FR-DU08) may be faulty. Contact your sales representative.

PROTECTIVE FUNCTIONS 153

Causes and corrective actions

Operation panel
rE4
indication
Name Product series error
• The series of source converter for Parameter copy or the parameter writing/verification is different from that
Description of target converter.
• Parameter copy is attempted after the parameter copy reading was stopped.
• Check that the verifying converter is the same model.
• Check that reading was not interrupted during Parameter copy by switching OFF the power or by
Check point
disconnecting the operation panel.
• Parameter copy was attempted while Pr.77 Parameter write selection = "1".
• Perform Parameter copy or the parameter verification between converters of the same series.
Corrective action • Perform Parameter copy again.
• Set Pr.77 Parameter write selection = "2" and retry.

Operation panel
Err.
indication
• When RES signal is ON.
• When the PU and the high power factor converter cannot make normal communication. (Contact faults of
the connector)
Description • This error may occur when the voltage at the input side of the converter drops.
• When using a separate power source for the control circuit power (R1/L11, S1/L21) from the main circuit
power (R4/L14, S4/L24, T4/L34), this error may appear at turning ON of the main circuit. It is not a fault
indication.
• Turn OFF the RES signal.
Corrective action • Check the connection between the PU and the converter.
• Check the voltage on the input side of the converter.

Warning
Output is not shut off when a protective function is activated.

Operation panel
OL FR-PU07 OL
indication
Name Overload signal detection
Description Appears when the current limit function of the converter activates.
• Check that the acceleration/deceleration time of the inverter is not too short.
• Check that the load is not too heavy.
Check point
• Check for any failures in peripheral devices.
• Check that Pr.22 Current limit level is appropriate. (Refer to page 92.)
• Set the acceleration/deceleration time of the inverter longer.
• Reduce the load.
Corrective action • Check that the peripheral devices are operating properly.
• The limit level of the output current can be set with Pr.22 Current limit level. (Initial value is 150%.) Set the
current limit level higher with Pr.22 Current limit level.

Operation panel
TH FR-PU07 TH
indication
Name Electronic thermal O/L relay pre-alarm
Appears if the cumulative value of the electronic thermal relay reaches or exceeds 85% of the preset level. If
the specified value is reached, the protection circuit is activated to stop the converter control.
Description THP signal can be simultaneously output with the [TH] display. For the terminal used for the THP signal
output, set "8 (positive logic)" or "108 (negative logic)" in any of Pr.192 to Pr.194 or Pr.196 (Output terminal
function selection) to assign the function. (Refer to page 129.)
Check point Check for large load or sudden acceleration.
Corrective action Reduce the load and frequency of operation.

154 PROTECTIVE FUNCTIONS

 Causes and corrective actions

Operation panel
SL FR-PU07 SL
indication
Name Power supply not detected
• Appears when the power supply detection ends incompletely at a power failure.
Description • Appears when power is supplied only to the control circuit through terminals R1/L11 and S1/L12.
• Appears when a fuse is blown in the phase detection transformer box.
• Check the power supply and the wiring.
Check point • Check the wiring for power supply detection.
• Check if the fuse is blown in the phase detection transformer box.
• Perform wiring correctly.
Corrective action
• Contact your sales representative.

Operation panel
PS FR-PU07 PS
indication
Name PU stop

The PU stop (stop of the converter operation by pressing on the PU) is enabled by the setting of Pr.75
Description
Reset selection/disconnected PU detection/PU stop selection. (For the details of Pr.75, refer to page
104.)

Check point Check for a stop made by pressing of the operation panel.

To reset the indication, turn ON the Converter stop (SOF) signal to stop the converter output, and press
Corrective action
.

Operation panel to
MT1 to MT3 FR-PU07 MT1 to MT3
indication

Name Maintenance timer 1 to 3

Appears when the converter's cumulative energization time reaches or exceeds the parameter set value. Set
the time until the MT is displayed using Pr.504 Maintenance timer warning output set time (MT1), Pr.687
Description Maintenance timer 2 warning output set time (MT2), and Pr.689 Maintenance timer 3 warning output
set time (MT3).
MT does not appear when the settings of Pr.504, Pr.687, and Pr.689 are initial values (9999).
Check point The set time of maintenance timer has been exceeded.
Take appropriate countermeasures according to the purpose of the maintenance timer setting.
Corrective action Setting "0" in Pr.503 Maintenance timer, Pr.686 Maintenance timer 2, or Pr.688 Maintenance timer 3
clears the indication.

Operation panel
SA FR-PU07 SA
indication
Name SA
Appears when the shorting wire across terminals S1 and PC or terminals S2 and PC is disconnected. (Refer
Description
to page 49.)
Check point Check if the shorting wire across terminals S1 and PC or terminals S2 and PC is disconnected.
• Short across terminals S1 and PC and across S2 and PC with shorting wire to operate the converter.

Corrective action • If " " is indicated when wires across S1 and SIC and across S2 and SIC are both conducted, internal
failure might be the cause. Check the wiring of terminals S1, S2 and SIC and contact your sales
representative if the wiring has no fault.
6
Alarm
Output is not shut off when a protective function is activated. An alarm can also be output with a parameter setting.
(Set "98" in any of Pr.192 to Pr.194 and Pr.196 (Output terminal function selection) (refer to page 129).

Operation panel
FN FR-PU07 FN
indication
Name Fan alarm

Description " " appears on the operation panel when the cooling fan in the converter stops due to a fault, slows
down, or moves differently from the Pr.244 Cooling fan operation selection setting.
Check point Check the cooling fan for a failure.
Corrective action Check for fan failure. Please contact your sales representative.

PROTECTIVE FUNCTIONS 155

Causes and corrective actions

Fault
When a protective function is activated, the converter output is shut off and the Fault (ALM) signal is output. Output of the
connected inverters are also shut off.

Operation panel
E.OCT FR-PU07 E.OCT
indication
Name Overcurrent trip
Description The converter output is shut off if the input current exceeds the specified level during operation.
• Check for sudden load change.
• Check for a short-circuit in the output circuit.
Check point
• Check that the wiring is performed correctly.
• Check that any power supply failure did not occur.
• Keep the load stable.
• Check the wiring to make sure that output short circuit does not occur.
Corrective action
• Check the wiring.
• Check the power supply.

Operation panel
E.OVT FR-PU07 E.OVT
indication
Name Overvoltage trip
If the converter's internal main circuit DC voltage reaches or exceeds the specified value, the protective
Description circuit is activated to shut off the output of the converter. The circuit may also be activated by a surge voltage
produced in the power supply system.
• Check for sudden load change and excessive regeneration.
Check point
• Check that any power supply failure did not occur.
• Keep the load stable.
Corrective action
• Check the power supply.

Operation panel
E.THT FR-PU07 Inv. Overload
indication
Name Overload trip (electronic thermal relay function)
For the protection of transistor, electronic thermal relay is activated in inverse-time characteristics against the
Description
converter input to shut off the output of the converter.
• Check the motor for the use under overload.
Check point
• Check that the total capacity of the inverters used is not larger than the capacity of the converter.
• Reduce the load.
Corrective action
• Reconsider the configuration of the inverters for the converter.

 Resetting the converter initializes the internal cumulative heat value of the electronic thermal O/L relay function.

Operation panel
E.FIN FR-PU07 H/Sink O/Temp
indication
Name Heat sink overheat
When the heat sink overheats, the temperature sensor is activated, and the converter output is shut off.
The FIN signal can be output when the temperature becomes approximately 85% of the heat sink overheat
protection operation temperature.
Description
For the terminal used for the FIN signal output, set "26 (positive logic)" or "126 (negative logic)" in any of
Pr.192 to Pr.194 or Pr.196 (Output terminal function selection) to assign the function. (Refer to page
129.)
• Check for too high surrounding air temperature.
Check point • Check for heat sink clogging.
• Check that the cooling fan is not stopped. (Check that FN is not displayed on the operation panel.)
• Set the surrounding air temperature to within the specifications.
Corrective action • Clean the heat sink.
• Replace the cooling fan.

156 PROTECTIVE FUNCTIONS

 Causes and corrective actions

Operation panel
E.IPF FR-PU07 Inst. Pwr. Loss
indication
Name Instantaneous power failure
• When a power failure occurs (or when power input to the converter is shut off), the instantaneous power
failure protection function is activated to shut off the output of the converter and prevent the control circuit
from malfunctioning. If a power failure persists for 100 ms or longer, the fault output is not provided, and the
converter and the inverter restart if the start signal is ON upon power restoration. In some operating status
Description
(load magnitude, acceleration/deceleration time setting of the inverter, etc.), overcurrent or other protection
may be activated upon power restoration.
The IPF signal is output when a power failure is detected. (Refer to page 129.)
• When a fuse is blown in the phase detection transformer box, the converter output is shut off.
• Find the cause of instantaneous power failure occurrence.
Check point
• Check if the fuse is blown in the phase detection transformer box.
• Remedy the instantaneous power failure.
• Prepare a backup power supply for instantaneous power failure.
Corrective action
• Set the function of automatic restart after instantaneous power failure (Pr.57). (Refer to page 101.)
• If a fuse is blow in the transformer box, contact your sales representative.

Operation panel
E.UVT FR-PU07 Under Voltage
indication
Name Undervoltage
If the power supply voltage of the converter decreases, the control circuit will not perform normal functions. To
Description
prevent this, the converter output is shut off when the power supply voltage drops to about 300 VAC or lower.
Check point Check if a high-capacity motor is driven.
Check the power supply system equipment such as the power supply.
Corrective action
If the problem still persists after taking the above measure, contact your sales representative.

Operation panel
E.ILF FR-PU07 Input phase loss
indication
Name Input phase loss
• This protective function is activated when any of the three phases of power input is lost.
Description
• When a fuse is blown in the phase detection transformer box, the converter output is shut off.
• Check for a break in the cable for the three-phase power supply input.
Check point
• Check if the fuse is blown in the phase detection transformer box.
• Wire the cables properly.
Corrective action • Repair a break portion in the cable.
• If a fuse is blow in the transformer box, contact your sales representative.

Operation panel
E.OHT FR-PU07 OH Fault
indication
Name External thermal relay operation
If an overheat protection device such as a thermostat is activated, the converter output is shut off.
Description This function is available when "7" (OH signal) is set in any of Pr.178 to Pr.189 (input terminal function
selection). This protective function is not available in the initial status. (OH signal is not assigned.)
• Check for the overheat of a thermostat or other similar peripheral devices.
Check point
• Check if the input specification (NO/NC contact) of the OH signal is incorrect.
• Check the wiring.
Corrective action • Use Pr.9 OH input selection to change the input specification. (Refer to page 91.)
• Even if the thermostat restarts automatically, the converter does not restart unless it is reset.

6
Operation panel
E.OPT FR-PU07 Option Fault
indication
Name Option fault
Description When the FR-A8AVP is not installed in the converter, the converter output is shut off.
• Check that the FR-A8AVP is not removed from the converter.
Check point
• Check for a contact fault between the FR-A8AVP and the converter.
Corrective action Install the FR-A8AVP to the converter correctly.

PROTECTIVE FUNCTIONS 157

Causes and corrective actions

Operation panel
E.VER FR-PU07 Fault
indication
Name Invalid version
Description Appears when an incompatible FR-A8AVP is used for the converter.
Check if the FR-A8AVP installed at the time of conversion to the converter was removed, and another FR-
Check point
A8AVP with a different firmware version has been installed.
Install the correct FR-A8AVP which was used for conversion to the converter. First, convert the converter
Corrective action
back into the inverter, and then convert the inverter into the converter again.

Operation panel
E.PE FR-PU07 Corrupt Memry
indication
Name Parameter storage device fault (control circuit board)
Description The converter output is shut off if a fault occurs in the parameters stored. (EEPROM failure)
Check point Check for too many number of parameter write times.
Contact your sales representative.
Corrective action Set "1" in Pr.342 (write to RAM) for the operation which requires frequent parameter writing via communication,
etc. Note that writing to RAM goes back to the initial status at power OFF.

Operation panel
E.PUE FR-PU07 PU Leave Out
indication
Name PU disconnection
The converter output is shut off if communication between the converter and PU is suspended, e.g. the
operation panel or parameter unit is disconnected, when the disconnected PU detection function is enabled
Description
by Pr.75 Reset selection/disconnected PU detection/PU stop selection. This protective function is not
enabled in the initial setting (Pr.75 = "14").
• Check that the FR-DU08 or the parameter unit (FR-PU07) is connected properly.
Check point
• Check the Pr.75 setting.
Corrective action Install FR-DU08 or the parameter unit (FR-PU07) securely.

Operation panel
E.RET FR-PU07 Retry No Over
indication
Name Retry count excess
If operation cannot be resumed properly within the number of retries set, this function shut off the output of the
converter.
Description
This function is enabled when Pr.67 Number of retries at fault occurrence is set. This protective function is
disabled in the initial setting (Pr.67 = "0").
Check point Find the cause of the fault occurrence.
Corrective action Eliminate the cause of the error preceding this error indication.

Operation panel
E.PE2 FR-PU07 PR storage alarm
indication
Name Parameter storage device fault (main circuit board)
Description The converter output is shut off if a fault occurs in the parameters stored. (EEPROM failure)
Check point ――――
Corrective action Contact your sales representative.

Operation panel
E.LOH FR-PU07 Fault
indication
Name Reactor overheat
When the reactor is overheated, the converter output is shut off. (This function is not available when power is
Description
supplied only to the control circuit.)
• The reactor 1 or 2 is not connected.
• Check the wiring between the overheat detection thermostat of reactor and the terminal to which the LOH
Check point signal is assigned.
• The fan power terminals for the reactors 1 and 2 are not connected to the MC power supply stepdown
transformer.
• Connect the reactors 1 and 2.
• Correct the wiring between the overheat detection thermostat of reactor and the terminal to which the LOH
Corrective action signal is assigned.
• Correct the wiring between the MC power supply stepdown transformer and the fan power terminals for the
reactors 1 and 2.

158 PROTECTIVE FUNCTIONS

 Causes and corrective actions

E. 5 Fault 5

E. 6 Fault 6
Operation panel
FR-PU07
indication
E. 7 Fault 7

CPU CPU Fault

Name CPU fault
Description The converter output is shut off if the communication fault in the built-in CPU occurs.
Check point Check for devices producing excess electrical noises around the converter.
• Take measures against noises if there are devices producing excess electrical noises around the high power
Corrective action factor converter.
• Contact your sales representative.

Operation panel
E.CTE FR-PU07 E.CTE
indication
Name Operation panel power supply short circuit, RS-485 terminal power supply short circuit
When the operation panel power supply (PU connector) is short circuited, this function shuts off the power
output and stops the converter. The use of the operation panel (parameter unit) and the RS-485
communication via the PU connector are disabled. To reset, enter RES signal, or switch power OFF then ON
again.
Description
When the power supply for the RS-485 terminals are short circuited, this function shuts off the power output.
At this time, the use of the RS-485 communication via the RS-485 terminals are disabled.

To reset, use of the operation panel, enter the RES signal, or switch power OFF then ON again.

• Check that the PU connector cable is not shorted.

Check point
• Check that the RS-485 terminals are connected correctly.
• Check PU and the cable.
Corrective action
• Check the connection of the RS-485 terminals.

Operation panel
E.P24 FR-PU07 E.P24
indication
Name 24 VDC power output short circuit
When the 24 VDC power output from the PC terminal is shorted, this function shuts off the power output.
Description At this time, all external contact inputs switch OFF. The inverter cannot be reset by inputting the RES signal.
To reset it, use the operation panel, or switch power OFF, then ON again.
• Check for a short circuit in the PC terminal output.
Check point
• Check that the 24 V external power supply voltage is correct.
• Repair the short-circuited portion.
• Supply the power at 24 V. (If the power with insufficient voltage is supplied to the 24 V input circuit for a long
Corrective action
time, the inverter internal circuit may heats up. Although it will not damage the inverter, supply power at the
correct voltage .)

Operation panel
E.IOH FR-PU07 Inrush overheat
indication
Name Inrush current limit circuit fault
Stops the converter operation when the inrush current limit contactor does not turn ON or a thermostat of the
Description
inrush current limit resistor is activated. 6
The inrush current limit circuit is faulty.
When the terminal PC and SD are shorted, the ROH signal turns OFF and the converter output is shut off.
• Check the wiring between the resistor thermostat and the terminal to which the ROH signal is assigned.
• Check that the inrush current limit circuit contactor and buffer circuit are not damaged.
Check point • Check that frequent power ON/OFF is not repeated.
• Check that the resistor thermostat is connected with the terminal to which the ROH signal is assigned.
• Check for a short circuit between terminals PC and SD.
• Connect the resistor thermostat with the terminal to which the ROH signal is assigned.
• Configure a circuit where frequent power ON/OFF is not repeated.
Corrective action • Check the wiring between the resistor thermostat and the terminal to which the ROH signal is assigned.
• Check the wiring between terminals PC and SD.
If the problem still persists after taking the above measure, contact your sales representative.

PROTECTIVE FUNCTIONS 159

Causes and corrective actions

Operation panel
E.SAF FR-PU07 Safety circuit fault
indication
Name Safety circuit fault
• The converter output is shut off when a safety circuit fault occurs.
Description • The converter output is shut off when the shorting wire across terminals S1 and PC or terminals S2 and PC
is disconnected.
Check point Check if the shorting wire across terminals S1 and PC or terminals S2 and PC is disconnected.
• Short across terminals S1 and PC and terminals S2 and PC with shortening wires. (Refer to page 55.)
Corrective action • If this fault occurs even though the shorting wire across the terminals S1 and PC or the terminals S2 and PC
is connected, contact your sales representative.

E.PBT E.PBT
Operation panel
FR-PU07
indication
E.13 Fault 13
Name Internal circuit fault
Description The converter output is shut off when an internal circuit fault occurs.
Corrective action Contact your sales representative.

Operation panel E. 1 to to
FR-PU07 Fault 1 to Fault 3
indication E. 3

Name Option fault

• The converter output is shut off when a plug-in option other than the FR-A8AVP is installed in the converter,
Description or the FR-A8AVP is not recognized by the converter due to a contact fault or other reason.
• Appears if the switch for manufacturer setting of the FR-A8AVP has been changed.
• Check that a plug-in option other than the FR-A8AVP is installed in the converter.
• Check that FR-A8AVP is connected to the connector securely. (1 to 3 indicate connector numbers for
Check point
connection of the option.)
• Check for excess electrical noises around the high power factor converter.
• Connect the FR-A8AVP securely.
• Take measures against noises if there are devices producing excessive electrical noises around the
Corrective action converter.
If the situation does not improve after taking the above measure, please contact your sales representative.
• Set the manufacturer setting switch on the FR-A8AVP back to the initial setting. (Refer to page 9.)

Operation panel
E.8 FR-PU07 Fault 8
indication
Name Input power supply fault
• When a fault is detected in the power supply frequency,
• When the phase detection cannot be performed for the normal power supply,
• When an overvoltage occurs during power failure or at an input phase loss.
Description
• When the power supply amplitude changes suddenly,
• When a fuse is blown in the phase detection transformer box,
it is regarded as a power supply fault, and the outputs of the converter and the inverter are stopped.
• Check the power supply and the wiring.
Check point
• Check if the fuse is blown in the phase detection transformer box.
• Perform wiring correctly.
Corrective action
• If a fuse is blow in the transformer box, contact your sales representative.

160 PROTECTIVE FUNCTIONS

 Causes and corrective actions

Others
Indicates the status of the converter. It is not a fault indication.

Operation panel
E.0 FR-PU07 No Alarm
indication
Name No fault history
Appears when no fault records are stored. (Appears when the fault history is cleared after the protective
Description
function has been activated.)

Operation panel
EV FR-PU07 EV
indication
Name 24 V external power supply in operation
Description Blinks when the main circuit power supply is off and the 24 V external power supply is being input.
Check point Power is supplied from a 24 V external power supply.
• Turning ON the power supply (main circuit) of the converter clears the indication.
Corrective action • If the indication is still displayed after turning ON of the power supply (main circuit) of the converter, the
power supply voltage may be low.

NOTE
• If faults other than the above appear, contact your sales representative.

PROTECTIVE FUNCTIONS 161

Check first when you have a trouble

6.6 Check first when you have a trouble

Condition Check point
Check the following about connection:
● Wiring is performed correctly.
● Appropriate power supply voltage is applied.
The converter does not operate properly. ● The phase sequence is correct.

When the phase sequence is correct, check for the short circuit
across terminals SOF and SD and across terminals RES and SD.
Check the following about connection:
● Connection is performed correctly.
The power lamp is OFF. ● Wiring for the main circuit terminals R4/L14, S4/L24, and T4/L34 is performed
correctly.
● The inrush current limit resistor is not damaged.
Check the following about connection:
The charge lamp on the converter does not ● Connection is performed correctly.
come on. ● Wiring for the main circuit terminals R4/L14, S4/L24, and T4/L34 is performed
correctly.
Check the following about connection:
Reactor heats up abnormally.
● Check if the sequence of the reactors 1 and 2 is correct.
Check the following about the setting:
The parameter settings in the inverter are appropriate. (Parameter setting
The inverter does not run.
method differs by the inviter series. For the parameter setting method, refer to
page 23)
Unusual noises are generated from the reactor. The phase sequence is correct.
Check the following about connection:
● Wiring is performed correctly.
A breaker trips. ● Appropriate power supply voltage is applied.
● The phase sequence is correct.
Identify the cause of the trip and remove it before turning ON the power of the breaker.

162 PROTECTIVE FUNCTIONS

 7 PRECAUTIONS FOR
MAINTENANCE AND
INSPECTION

This chapter explains the precautions for maintenance and inspection of

the converter.
Always read the instructions before use.

7.1 Inspection item..........................................................................164

7.2 Measurement of main circuit voltages, currents, and
powers....................................................................................... 172

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 163

Inspection item

The converter is a static unit mainly consisting of semiconductor devices. Daily inspection must be performed to prevent any
fault from occurring due to the adverse effects of the operating environment, such as temperature, humidity, dust, dirt and
vibration, changes in the parts with time, service life, and other factors.

• Precautions for maintenance and inspection

When accessing the converter for inspection, wait for at least 10 minutes after the power supply has been switched OFF.
Then, make sure that the voltage across the main circuit terminals P/+ and N/- on the converter is not more than 30 VDC
using a tester, etc.

CAUTION
 Reactor 1 and reactor 2 are extremely hot. Take caution not to get burned.

7.1 Inspection item

7.1.1 Daily inspection

Basically, check for the following faults during operation.
• Improper installation environment
• Cooling system fault
• Abnormal vibration, abnormal noise
• Abnormal overheat, discoloration

7.1.2 Periodic inspection

Check the areas inaccessible during operation and requiring periodic inspection.
Consult us for periodic inspection.
• Check for cooling system fault. ..............Clean the air filter, etc.
• Check the tightening and retighten. .......The screws and bolts may become loose due to vibration, temperature changes,
etc. Check and tighten them.
Tighten them according to the specified tightening torque. (Refer to page 38.)
• Check the conductors and insulating materials for corrosion and damage.
• Measure the insulation resistance.
• Check and change the cooling fan and relay.

164 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

 Inspection item

7.1.3 Daily and periodic inspection list

Inspection
Check
Area of interval Corrective action at
Inspection Item Description by the
inspection Periodic fault occurrence
Daily user

Surrounding Check the surrounding air temperature,
 Improve the environment.
environment humidity, dirt, corrosive gas, oil mist, etc.
Check fault location and
Check for unusual vibration and noise. 
retighten.
General Overall unit
Check for dirt, oil, and other foreign
 Clean.
material.
Power supply Check that the main circuit voltage and
 Inspect the power supply.
voltage control circuit voltage are normal.
(1) Check with megger (between main circuit
 Contact the manufacturer.
terminals and earth (ground) terminal).
General (2) Check for loose screws and bolts.  Retighten.
(3) Check for overheat traces on the parts.  Contact the manufacturer.
(4) Check for stains.  Clean.
(1) Check conductors for distortion.  Contact the manufacturer.
Conductors and
(2) Check cable sheaths for breakage and
cables  Contact the manufacturer.
deterioration (crack, discoloration, etc.).
Main Check for unusual odor and abnormal Stop the equipment and
Transformer/reactor 
circuit increase of whining sound. contact the manufacturer.
Stop the equipment and
Terminal block Check for a damage. 
contact the manufacturer.
(1) Check for liquid leakage.  Contact the manufacturer.
Smoothing
(2) Check for safety valve projection and
aluminum  Contact the manufacturer.
bulge.
electrolytic capacitor
(3) Visual check 
Check that the operation is normal and no
Relay/contactor  Contact the manufacturer.
chattering sound is heard.
Check that no fault is found in protective and
Operation check display circuits in a sequence protective  Contact the manufacturer.
operation test.
Control Stop the equipment and
Components check

(1) Check for unusual odor and discoloration. 

circuit Overall contact the manufacturer.
Protective (2) Check for serious rust development.  Contact the manufacturer.
circuit (1) Check for liquid leakage in a capacitor and
Aluminum  Contact the manufacturer.
deformation trace.
electrolytic
capacitor (2) Visual check 

(1) Check for unusual vibration and noise.  Replace the fan.
Cooling fan (2) Check for loose screws and bolts.  Retighten.
(3) Check for stains.  Clean.
Cooling
(1) Check for clogging.  Clean.
system Heat sink
(2) Check for stains.  Clean.
(1) Check for clogging.  Clean or replace.
Air filter, etc.
(2) Check for stains.  Clean or replace.
(1) Check that indications are correct.  Contact the manufacturer.
Indication
(2) Check for stains.  Clean.
Display
Meter/counter Check that readouts are correct. 
Stop the equipment and
contact the manufacturer. 7
 Oil component of the heat dissipation grease used inside the converter may leak out. The oil component, however, is not flammable, corrosive,
nor conductive and is not harmful to humans. Wipe off such oil component.
 It is recommended to install a device to monitor voltage for checking the power supply voltage to the converter.
 One to two years of periodic inspection cycle is recommended. However, it differs according to the installation environment.
Consult us for periodic inspection.

NOTE
• Continuous use of a leaked, deformed, or degraded smoothing aluminum electrolytic capacitor (as shown in the table above)
may lead to a burst, breakage, or fire. Replace such capacitor without delay.

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 165

Inspection item

7.1.4 Continuity test

Preparation
• Disconnect the external power cables from terminals R4/L14, S4/L24, T4/L34, P/+, and N/-.
• Prepare a continuity tester. (For the resistance measurement, use the 100 Ω range.)

Checking method
Change the polarity of the tester alternately at a semiconductor device (transistor) on an electrical path between two terminals
among the converter main circuit terminals R4/L14, S4/L24, T4/L34, P/+, and N/- to check the electric continuity.

NOTE
• Before measurement, check that the smoothing capacitor is discharged.
• At the time of electric discontinuity, the measured value is almost ∞. When there is an instantaneous electric continuity, due to
the smoothing capacitor, the tester may not indicate ∞. At the time of electric continuity, the measured value is several Ω to
several tens of Ω. If all measured values are almost the same, although these values are not constant depending on the
module type and tester type, the modules are without fault.

Device number and target terminal

Tester polarity
Device No. Continuity
P/+
R4/L14 P/+ No
TR1
P/+ R4/L14 Yes TR1 TR3 TR5
T4/L34 N/- Yes
TR2
N/- T4/L34 No
S4/L24 P/+ No
TR3
P/+ S4/L24 Yes R4/L14
R4/L14 N/- Yes S4/L24 C
TR4
N/- R4/L14 No T4/L34
T4/L34 P/+ No
TR5
P/+ T4/L34 Yes
S4/L24 N/- Yes
TR6
N/- S4/L24 No TR4 TR6 TR2
(Assuming that an analog meter is used.) N/-

7.1.5 Cleaning
Always run the converter in a clean status.
When cleaning the converter, gently wipe dirty areas with a soft cloth immersed in neutral detergent.

NOTE
• Do not use solvent, such as acetone, benzene, toluene and alcohol, as these will cause the converter surface paint to peel
off.
The display, etc. of the operation panel (FR-DU08) and parameter unit (FR-PU07) are vulnerable to detergent and alcohol.
Therefore, avoid using them for cleaning.

166 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

 Inspection item

7.1.6 Replacement of parts

Each of the converter, reactor 1, and reactor 2 consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to reduced
performance or fault of the converter, reactor 1, or reactor 2. For preventive maintenance, the parts must be replaced
periodically.

• The standard replacement interval of the converter parts is as follows.

Estimated
Part name Description
lifespan
Cooling fan 10 years Replace (as required).
Main circuit smoothing capacitor 10 years Replace (as required).
On-board smoothing capacitor 10 years Replace the board (as required).
Relays — As required.
Main circuit fuse 10 years Replace (as required).

• The standard replacement interval of the reactor parts is as follows.

Estimated
Part name Description
lifespan
Cooling fan 10 years Replace (as required).

 Estimated lifespan for when the yearly average surrounding air temperature is 40°C
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
 Input current: 80% of the converter rating

NOTE
• For replacement of each part, contact the nearest Mitsubishi Electric FA center.

Replacement procedure of the cooling fan

The replacement interval of the cooling fan used for cooling the parts generating heat such as the main circuit semiconductor
is greatly affected by the surrounding air temperature. When unusual noise and/or vibration are noticed during inspection, the
cooling fan must be replaced immediately.

 Removal of the cooling fan of the converter

Remove the fan cover fixing screws, and remove the fan cover.
Disconnect the fan connector and remove the fan block.
Remove the fan fixing screws, and remove the fan.

Fan

3) Fan block

7
2) Fan cover

Fan connector

1)

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 167

Inspection item

 Replacement of the cooling fan of the reactors

• Remove/connect the fan block from/to the reactor as follows.

Hook hole
Hook
Mounting screw
(Tightening torque: 4.4 to 5.9 N·m)
Fan block

• Remove/connect the fan from/to the fan block as follows.

Mounting screw
(Tightening torque: 0.68 to 0.78N·m

Cable clamp

Cable clamp

Fan connector

Fan
Fan block

NOTE
• The fan block has a hook. To remove the fan block from the reactor, first pull the hook-less side of the fan block away from the
reactor, and then disengage the hook from the hole, as shown in the first figure above.
• When fitting the cooling fan into the fan block, first pass the fan cable through the cable clamps if the clamps have been
removed for removal of the fan. Next, fasten the fan to the fan block using the mounting screws (some of them passing
through holes in the clamps). Improper installation may damage the fan. For example, loose fan wires may get caught in the
fan.

168 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

 Inspection item

 Installation orientation of the cooling fan of the converter and reactors

After confirming the orientation of the fan, reinstall the fan so that the "AIR FLOW" faces up.

AIR FLOW

<Fan side view>

NOTE
• Installing the cooling fan in the opposite direction may shorten the product life.
• Installing the reactor cooling fan in the opposite direction may cause overheating of the reactor, which results in activation of
the converter protective function (E.LOH).
• Prevent the cable from being caught when installing a fan.
• Switch the power OFF before replacing fans. Since the converter circuits are charged with voltage even after power OFF,
replace fans only when the converter cover is on the converter to prevent an electric shock accident.

Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the DC section of the main circuit, and an aluminum
electrolytic capacitor is used for stabilizing the control power in the control circuit. Adverse effects from ripple currents
deteriorate capacitors. Replacement intervals of capacitors vary greatly with surrounding temperatures and operating
conditions. Replace them roughly every 10 years when used in normal air-conditioned environments.
When a certain period of time has elapsed, capacitors will deteriorate more rapidly. Check capacitors at least every year (less
than six months if the life will be expired soon).
Check the following during inspection to determine the end of product life.
• Case: Check that the sides and bottom of the capacitor have not ruptured.
• Rubber seal: Check for any noticeable bulging or severe cracks.
• Top (vent): Check for swollen, open, or exploded vent.
• Others: Check for external cracks, discoloration, and leakage.

Relay output terminals

The contacts of relays deteriorate over time. To prevent faults from occurring, relays must be replaced when they have
reached the maximum number of switching operations (switching life).
The control circuit terminal block on the converter must be replaced in case of failure of either relay connected to the relay
output terminals A1, B1, and C1, or terminals A2, B2, and C2. (Refer to page 171.)

Main circuit fuse

Fuses are used in some converters. The surrounding air temperature and operating condition affect the life of fuses. When
the inverter is used in a normal air-conditioned environment, replace its fuse after about 10 years.

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 169

Inspection item

7.1.7 Removal and reinstallation of the control

circuit terminal block
The FR-A800 series inverter has a removable control circuit terminal block, which can be replaced with a new one or a
control terminal option.

Removal and reinstallation

1) Loosen the two mounting screws at the both side of the control circuit terminal block. (These screws cannot be removed.)
Slide down the control circuit terminal block to remove it.

Loosen the screws

2) Be careful not to bend the pins of the converter's control circuit connector, reinstall the control circuit terminal block and fix
it with the mounting screws.

NOTE
• Before starting converter replacement, switch power OFF, wait for at least 10 minutes, and then check the voltage with a
tester and such to ensure safety.

170 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

 Inspection item

Removal and reinstallation precautions

Precautions to be taken when removing or reinstalling the control circuit terminal block are shown below.
Observe the following precautions and handle the converter properly to avoid malfunctions or failures.
• To remove or reinstall the control circuit terminal block, keep it upright so that it is parallel with the converter.
• To install the control circuit terminal block, slide it upward so that the tongues on the converter slot into the grooves on the
terminal block.
• Check that the terminal block is parallel to the converter and the pins on the inverter control circuit connector are not bent.
After checking proper connection, fix the terminal block in place with two screws.
Converter's control Control circuit terminal block
circuit connector
Slot the tongue into the groove.

Fasten the screws.

A
Control circuit terminal block
Converter's control
circuit connector

Insert the
terminal block
parallel to the
converter.

View from side A

NOTE
• Do not tilt the terminal block while tightening the screws or removing it from the converter. (Otherwise, stress applied to the
control circuit terminal block or the control circuit connector may damage the pins.)
• After replacing the control terminal block, connect the jumper connector to the correct position in accordance with the control
logic of input signals. (Refer to page 53.)

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 171

Measurement of main circuit voltages, currents, and powers

7.2 Measurement of main circuit voltages,

currents, and powers
• Measurement method of voltage and current at each section:
When instruments for commercial frequency are used for measurement, measure the following circuits with the instruments
given below.
• When installing meters etc. on the output side of the high power factor converter:
When the converter-to-inverter wiring length is long, the meters may generate heat due to line-to-line leakage current.
Therefore, choose the equipment which has enough allowance for the current rating.
• The output voltage across terminals P/+ and N/- on the converter can be measured with a moving-coil type meter (tester).
The voltage varies according to the power supply voltage. The voltage decreases when a load is applied.

Examples of measuring points and instruments

Converter
Reactor 1 Reactor 2
W11 AU R4/L14 P/+
+
VU Filter capacitor,
Power W12 AV inrush current S4/L24 V To inverter
limit resistor,
VV and MCs -
W13 AW T4/L34 N/-
VW

Converter
Reactor 1 Reactor 2
R4/L14 P/+
+
Wattmeter

Filter capacitor,
Power inrush current S4/L24 V To inverter
limit resistor,
and MCs -
T4/L34 N/-

Operation principle and application to electric meters

Applicable
Type Symbol Operation principle Measurement Characteristics
meter
Voltmeter/
Uses kinetic energy generated ammeter/
Highly sensitive and commonly
between the magnetic field of a resistance
DC used. Low energy
Moving-coil type permanent magnet and the meter/
(Average) consumption, small influence of
current that flows through the thermometer/
external magnetic field.
moving-coil. flux meter/
speed meter
Uses kinetic energy generated Strongly build and inexpensive.
between the moving-iron and AC Voltmeter/ Large influence of external
Moving-iron
the magnetic field of the current (RMS) ammeter magnetic field, frequency, and
that flows though the fixed coil. waveform.
Scale is divided equally when
Electrodynamic

using a wattmeter. Large

Uses kinetic energy generated Wattmeter/
Air-core AC/DC influence of external magnetic
between the currents that flow voltmeter/
coil (RMS) field, high energy consumption.
through two different coils. ammeter
This can be used as a standard
meter for AC and DC.

172 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

 Measurement of main circuit voltages, currents, and powers

Measuring points and instruments

Item Measuring point Measuring instrument Remarks (reference measured value)
Across terminals R4/L14 and
Input voltage Moving-iron type AC Commercial power, within permissible AC voltage
S4/L24, S4/L24 and T4/L34,
V1 voltmeter fluctuation. (Refer to page 176.)
and T4/L34 and R4/L14.
Input current Line current at terminal R4/ Moving-iron type AC
l1 L14, S4/L24, and T4/L34 ammeter
At terminals R4/L14, S4/L24,
T4/L34 and across terminals
Input power Electrodynamic single- P1 = W11 + W12 + W13
R4/L14 and S4/L24, S4/L24
P1 phase wattmeter (3-wattmeter method)
and T4/L34, and T4/L34 and
R4/L14.
Calculate after measuring power supply voltage, power supply side current and power supply side power.
Input power factor
P1
Pf1 Pf1 = 3V1× l 1 × 100%
Moving-coil type A measured value can be monitored on the PU.
Converter output Across P/+ and N/- instrument Reference value: 1.35 × V1
(such as tester) Maximum value: 760 V (during regenerative driving)
Approximately 10 VDC at maximum frequency
Across terminals AM and 5
(without frequency meter)
Across terminals CA and 5 Approximately 20 mADC at maximum frequency
Approximately 5 VDC at maximum frequency
Signal for indication on (without meter)
external meters Moving-coil type
(Tester and such may be T1
Across FM(+) and SD
used, with internal
resistance 50 kΩ or more.) 8 VDC
Pulse width T1: Adjust with C0 (Pr.900).
At terminals RES and SOF
Voltage when terminal is open: 20 to 30 VDC
Input signal and across terminals ROH(+)
Voltage when signal is ON: 1 V or less
and SD
Continuity check
Across terminals A and C Moving-coil type [Normal] [Fault]
Fault signal
Across terminals B and C (such as tester) Across A and C Discontinuity Continuity
Across B and C Continuity Discontinuity
 A digital power meter (designed for inverter) can also be used to measure.
 When the setting of Pr.196 ABC2 terminal function selection is the positive logic

7.2.1 Insulation resistance test using megger

• For the converter, conduct the insulation resistance test on the main circuit only as shown below and do not perform the
test on the control circuit. (Use a 500 VDC megger.)
R4/L14 P/+
Power S4/L24 N/-
T4/L34
Inverter
500 VDC
megger Converter

7
Earth (ground)

CAUTION
 Before performing the insulation resistance test on the external circuit, disconnect the cables from
all terminals of the converter so that the test voltage is not applied to the converter.
 For the continuity test of the control circuit, use a tester (high resistance range), and do not use the
megger or buzzer.

7.2.2 Withstand voltage test

Do not conduct a Withstand voltage test. Deterioration may occur.

PRECAUTIONS FOR MAINTENANCE AND INSPECTION 173

MEMO

174
 8 SPECIFICATIONS

This chapter explains the specifications of the converter.

Always read the instructions before use.

8.1 Converter rated specifications ................................................176

8.2 Common specifications ...........................................................177
8.3 Outline dimension drawings....................................................178
8.4 Compatible options ..................................................................184

SPECIFICATIONS 175
Converter rated specifications

8.1 Converter rated specifications

07700 08660 09620 10940 12120
Model FR-A842-[]
315K 355K 400K 450K 500K
Applicable inverter capacity
315 355 400 450 500
(kW)
Rated output capacity (kW) 375 423 476 536 595
Rated voltage (V)  Three-phase 380 to 500 V, 50/60 Hz
Rated current (A) 564 636 716 806 895
Overload current rating 150% 60 s
Permissible power supply
323 to 506 V, 50/60 Hz
voltage fluctuation
Permissible power supply
±5%
frequency fluctuation
Input power factor 0.99 or more (when load ratio is 100%)
Power supply capacity (kVA) 456 515 580 652 724
Protective structure of the
Open type (IP00)
converter
Cooling system Forced air
Approx. mass (kg) 163 163 243 243 243
 DC output capacity when the input voltage is 400 VAC.
 Change the stepdown transformer tap according to the input voltage. (Refer to page 45.)
 The output voltage is approx. 594 VDC at an input voltage of 400 VAC, approx. 653 VDC at 440 VAC, and approx. 742 VDC at 500 VAC.
 The percentage of the overload current rating is the ratio of the overload current to the converter's rated input current. For repeated duty, allow
time for the temperatures of the converter and the inverter to return to or below the temperatures under 100% load.
 FR-DU08: IP40 (except for the PU connector)
 The permissible voltage imbalance ratio is 3% or less. (Imbalance ratio = (highest voltage between lines - average voltage between three lines)
/ average voltage between three lines × 100)
 Voltage rating is between 380 and 480 V for inverters with a current rating of 110 A or less for the FR-F840-01800(75K) inverter.

176 SPECIFICATIONS
 Common specifications

8.2 Common specifications

Control method PWM control
Control
Power supply frequency range 50 to 60 Hz
specifications
Current limit level Current limit value selectable (0 to 220% variable)
The following signals can be assigned to Pr.178 to Pr.189 (Input terminal
function selection): Converter stop, External thermal relay input, Reactor
Input signal (twelve terminals)
overheat protection, Inrush current limit resistor overheat detection, and
Reset.
Output signal The following signals can be assigned to Pr.192 to Pr.194 or Pr.196 (Output
Open collector output (4) terminal function selection): Inverter run enable, Converter reset,
Instantaneous power failure, Overload warning, Converter running, Output
Relay output (1)
voltage match, Power supply phase detection, Electronic thermal O/L relay
pre-alarm, Instantaneous power failure detection hold, Fan fault output, Heat
Operation sink overheat pre-alarm, Regenerative drive recognition, During retry, 24 V
specifications Operating status external power supply operation, Life alarm, Maintenance timer, Alarm output,
Fault, Cooling fan operation command, Control circuit temperature, and PU
stop.
For indication on external
The monitor item can be changed using Pr.54 FM/CA terminal function
meters selection (pulse train output) or Pr.158 AM terminal function selection
Pulse train output (analog output): power supply frequency, input current, input voltage, bus
(Max. 2.4 kHz: one terminal) voltage, electronic thermal relay function load factor, input power, input power
Analog output (with regenerative display), reference voltage output, and control circuit
temperature.
(Max. 10 VDC: one terminal)
Power supply frequency, input current, input voltage, bus voltage, fault display,
Operating electronic thermal relay function load factor, input power, input power (with
Operation panel status regenerative display), cumulative energization time, cumulative energy, input
(FR-D08) terminal status, output terminal status, and control circuit temperature.
Indication When a protective function is activated, a fault indication is displayed, and the
Fault
Parameter unit latest monitored value of input voltage, input current, bus voltage, cumulative
record energization time are recorded. The last eight fault records are stored.
(FR-PU07)
Interactive
Help function for operation guide.
guidance
Overcurrent trip, Overvoltage trip, Overload trip (electronic thermal relay
function), Heat sink overheat, Instantaneous power failure, Undervoltage,
Input phase loss, Input power supply fault, External thermal relay operation,
Parameter storage device fault, PU disconnection, Retry count excess,
Protective
Inverter/converter switching fault, CPU fault, Operation panel power supply
function short circuit / RS-485 terminals power supply short circuit, 24 VDC power
Protective/warning function fault, Inrush current limit circuit fault, communication fault (converter), Safety
circuit fault, Internal circuit fault, Option fault, Input power supply fault, Reactor
overheat
Fan alarm, Overload signal detection, Electronic thermal O/L relay pre-alarm,
Warning PU stop, Maintenance timer 1 to 3, Parameter write error, Copy operation
function fault, Operation panel lock, Power supply not detected,24 V external power
supply operation
Surrounding air temperature -20 to +50°C (non-condensing)
With circuit board coating: 95% RH or less (non-condensing)
Surrounding air humidity
Without circuit board coating: 90% RH or less (non-condensing)
Environment Storage temperature -20 to +65°C
Atmosphere Indoors (without corrosive gas, flammable gas, oil mist, dust and dirt, etc.)
Altitude/vibration Maximum 2500 m, 2.9 m/s2 or less at 10 to 55 Hz (directions of X, Y, Z axes)
 Can be displayed only on the operation panel (FR-DU08).
 Can be displayed only on the option parameter unit (FR-PU07).
 Applicable to conditions for a short time, for example, in transit.
 This protective function is not available in the initial status.
 For the installation at an altitude above 1000 m, consider a 3% reduction in the rated current per 500 m increase in altitude. 8

SPECIFICATIONS 177
Outline dimension drawings

8.3 Outline dimension drawings

8.3.1 Reactor 1 (FR-A8BL1)

FR-A8BL1-H315K to H500K
R2/L12 S2/L22 T2/L32
320±2

R/L1
4×φ14
S/L2 T/L3

300±2

600±10 2×φ15
190±5 190±5 110±5 110±5
75 6 6
25

Eyebolt size: M16, 2 × φ35

40

Rating plate
690 max

Model name Mass

FR-A8BL1-H315K 198 kg
Earth (ground) terminal FR-A8BL1-H355K 209 kg
FAN FR-A8BL1-H400K 209 kg
FAN
FR-A8BL1-H450K 209 kg
(Unit: mm) FR-A8BL1-H500K 215 kg
9

380±10

8.3.2 Reactor 2 (FR-A8BL2)

FR-A8BL2-H315K to H500K
R4/L14 S4/L24 T4/L34

Model name D
410±2

FR-A8BL2-H315K, H355K 460

FR-A8BL2-H400K to H500K 480
R3/L13
S3/L23 T3/L33 4×φ14
320±2

600±10
2×φ15
190±5 190±5 160±5 160±5

75 6 6
25

Eyebolt size: M16, 2 × φ35

40

Rating plate
770 max

Model name Mass

FR-A8BL2-H315K 380 kg
Earth (ground) terminal FR-A8BL2-H355K 385 kg
FAN FR-A8BL2-H400K 429 kg
FAN
FR-A8BL2-H450K 457 kg
(Unit: mm) FR-A8BL2-H500K 457 kg
9

D±10

178 SPECIFICATIONS
 Outline dimension drawings

8.3.3 Phase detection transformer box (FR-A8VPB-H)

Outline dimension drawings
(7.5)

2×φ6
245

260
7.5

16.6 6 1.6
Rating plate
15 80 (15)

110 120

38 34 (38)

2 × φ18 (with rubber bush)

(Unit: mm)
74.6

Mass: 3.2 kg

Terminal block

R S T R2 RS2 TS2 T2

8
Terminal screw size
Model Terminals R, S, T, R2, RS2, TS2, and T2 Earth (ground) terminal
FR-A8VPB-H M3.5 M3.5

SPECIFICATIONS 179
Outline dimension drawings

8.3.4 Filter capacitor (FR-A8BC)

FR-A8BC-H400K
360±2

340±2 Screw size: M6

320±3
A

55±1

75±2

90±3
Enlarged view of section A

Screw size: M12

80±5 80±5 Earth (ground) terminal

Rating plate Fixing bracket∗1

Enlarged view of section B

Fixing bracket∗1
320±8
260±3

(Unit: mm)
Mass: 9 kg
B
 Attach the fixing brackets to the capacitor (refer to page 33).

FR-A8BC-H500K
433±5

398±3
15

343±2 A Screw size: M12

20

Enlarged view of section A

125±3
95±2
84

Screw size: M10

B
12

16
80±5 80±5 Screw size: M12
Enlarged view of section B

Rating plate
370±12
305±8
200±3

(Unit: mm)
3.2

Mass: 20 kg

Earth (ground) terminal

180 SPECIFICATIONS
 Outline dimension drawings

8.3.5 Dedicated circuit parts for inrush current

protection (FR-A8MC)
FR-A8MC-H315K, H500K
● Inrush current limit MC (S-N400 AC200V 2A2B)

8×φ9

9 145
60 136
11.5

26.5
9

A1 A2

13 1/L1 3/L2 5/L3

21
14
22
225

243
190
220

31
43
32
2/T1 4/T2 6/T3 44

30 3.2
M12 screw M4 screw (Unit: mm)
55 195
163 Mass: 9.5 kg

SPECIFICATIONS 181
Outline dimension drawings

● MC power supply stepdown transformer (BKO-CA2571H01)

M4 screw

11
7
Screw size: M6
8.8 134.5 Enlarged view of section A
A
140 max
175 max
2.3

Rating plate

100±1.5 81±1.5
152±2.5 (101)
(Unit: mm)
Mass: 9 kg

● Buffer relay (SR-T5 AC200V 5A)

4 35 ∗1
34 
30 ∗1 M3.5 screw 59
10.5

A2 A1
23.7

13 23 33 43 53
75
41.6
60 ∗1

50 ∗1
52 ∗1

14 24 34 44 54

8.5 10
7.5 78
(Unit: mm)
43
Mass: 0.27 kg
Screw size: M4

 The position of the upper-left mounting hole is selectable. Combinations of the horizontal and vertical dimensions are as follows: 35 and 60, 30
and 60, 34 and 52, 35 and 50-52.

● Mini relay (MYQ4Z AC200/220)

28 max 21.5 max

35.5 max

(Unit: mm)
Mass: 35 g

182 SPECIFICATIONS
 Outline dimension drawings

● Mini relay terminal block (PYF14T)

33 max 30
70 max

59

B
4

24.5
Screw size: M4
5

4.2 (Unit: mm)

Enlarged view of section B Mass: 53 g

● Inrush current limit resistor with thermostat (BKO-CA2573H11)

● Inrush current limit resistor without thermostat (BKO-CA2573H01)
5.3±0.3
8.5±0.5
5.3±0.3
13±0.5

200±1.2
Screw size: M5
215±2 500±10
325±15
175±2 6±1 30±1
6±1
(30)
2.5 -0.3
0

60±1.5

(Unit: mm)
Thermostat output Mass: 0.8 kg
(provided for BKO-CA2573H11 only)

SPECIFICATIONS 183
Compatible options

8.3.6 Parameter unit

● Operation panel (FR-DU08)

Outline drawing Enclosure cut dimension drawing

Min. 120∗1
Panel
3.2max 21 Operation 27.8
Operation panel
3

panel
connection cable
(FR-CB2[]) (option)
72.5
78.5

20
72.5

5
22
Hole

66 Operation panel connector

3

2-M3 screw hole

FR-ADP (option)
3 66 3 16

72 17 ∗1 Denotes the clearance required to connect an optional operation

panel connection cable (FR-CB2[]). When using another cable,
leave the space required for the cable specification.

(Unit: mm)

● Parameter unit (option) (FR-PU07)

Outline drawing Enclosure cut dimension drawing
25.05
(14.2) (11.45)
83
2.5

40 40

∗1
∗1
Hole
50

51

4-R1
∗1
∗1
135

67

56.8

57.8

26.5 26.5 4-φ4 hole

(valid depth: 5.0)
M3 screw ∗2

 When installing the FR-PU07 to an enclosure or any other surface, remove

the screws used for mounting to the converter, or use M3 nuts to fix the
screws.
80.3  Use mounting screws shorter than the effective depth of screw holes.

(Unit: mm)

8.4 Compatible options

It is not possible to use any other plug-in option when the FR-A8AVP is installed on the converter.
All terminal options become unusable too.

184 SPECIFICATIONS
 9 CONVERTER-TO-
INVERTER
CONVERSION

This chapter explains how to convert the converter back into the original
inverter.
Always read the instructions before use.

9.1 Converter-to-inverter conversion............................................186

CONVERTER-TO-INVERTER CONVERSION 185

Converter-to-inverter conversion

9.1 Converter-to-inverter conversion

This section explains the procedure to convert the high factor converter back into the inverter.

9.1.1 Preparation for the conversion

Before starting the conversion, check the following conditions of the converter (all the conditions must be satisfied).

Check the following while the control circuit power of the converter is OFF.
• The FR-A8AVP is installed in one of the option connectors (1 to 3). (Refer to page 11.)
• All of the main circuit terminals are open without wires connecting to them.
• Terminals R1/L11 and S1/L21 are used to supply power to the control circuit of the converter.
• No USB memory device is connected.

Check the following while the control circuit power of the converter is ON.
• The converter is in normal state and its operation is stopping. (Other than E.VER, no protective function is activated.)

NOTE
• When terminal +24 is used to supply power to the control circuit of the converter, the conversion to the inverter is disabled.

186 CONVERTER-TO-INVERTER CONVERSION

 Converter-to-inverter conversion

9.1.2 Converter-to-inverter conversion (Pr.328)

Pr. Name Initial value Setting range Description
Inverter/converter Change the setting of this parameter according to the
328 — 0 to 9999
switching predetermined converter-to-inverter conversion procedure.

Converter-to-inverter conversion procedure

The following shows the setting procedure on the PU for the converter-to-inverter conversion.
Enter the following values in Pr.328 in the following order. If the procedure from step 1 to step 3 is not followed, the parameter
setting will be cleared (the Pr.328 setting returns to its initial value "1"). In that case, restart the procedure from step 1.

1 Enter "3100".
Check that "3100" is displayed for Pr.328.

2 Enter "1080".
Check that "1080" is displayed for Pr.328.

3 Enter "2000".
The converter-to-inverter conversion starts when "2000" is entered. The communication status LED indicator
starts blinking. (The following figure shows the location of the LED indicator.)
The LED indicator stays ON after the conversion is completed.
(It takes about 300 seconds to complete the conversion.)

Communication status LED indicator

NOTE
• After entering "2000", do not operate the PU until the LED indicator stays ON.

4 Reset the control circuit power.

After the reset, "9999" will be displayed for Pr.328. Functions as a converter will not be available after this point.

5 After checking that "9999" is displayed for Pr.328, enter "0".

Converter reset will start automatically. After the reset, inverter functions are available.

6 Press the setting dial on the operation panel (FR-DU08) and check that "CNV" (converter) is
not displayed.

NOTE
• If the control circuit power is turned OFF once and then turned ON again, conversion may restart depending on the timing of
power OFF.

9.1.3 Removal of the stickers

Remove the "CONVERTER" sticker and the main circuit terminal stickers attached for use as the converter.
Check that the power of the inverter is OFF and open the terminal block cover to remove the main circuit terminal
stickers. (Refer to page 16.) 9

CONVERTER-TO-INVERTER CONVERSION 187

MEMO

188
 APPENDIX

APPENDIX provides the reference information for use of the converter.

Refer to APPENDIX as required.

Appendix 1 Instruction code list.....................................................190

Appendix 2 Instructions for compliance with the EU Directives.192
Appendix 3 Instructions for UL and cUL........................................194
Appendix 4 Instructions for EAC....................................................195
Appendix 5 Restricted Use of Hazardous Substances in
Electronic and Electrical Products.............................196
Appendix 6 Referenced Standard (Requirement of Chinese
standardized law).........................................................196

APPENDIX 189
Appendix 1 Instruction code list
 These instruction codes are used to write or read parameters through RS-485 communication. (Refer to page 113.)
 For Parameter copy, Parameter clear, and All parameter clear,  indicates the function is available, and  indicates the function is not available.
 These parameters are communication parameters that are not cleared when Parameter clear (All parameter clear) is executed from RS-485
communication. (Refer to page 113.)
 Reading and writing is enabled when commands are sent through communication via the PU connector.
Instruction
Instruction Parameter
Parameter code
code

Extended
Pr. Name

All clear
Extended

Pr. Name
All clear

Copy

Clear
Write
Read
Copy

Clear
Write
Read

PU communication
1 Maximum frequency 01 81 0    120 14 94 1   
parity check
2 Minimum frequency 02 82 0   
PU communication
8 SOF input selection 08 88 0    121 15 95 1   
retry count
9 OH input selection 09 89 0   
PU communication
22 Current limit level 16 96 0    123 17 97 1   
waiting time setting
Current limit level PU communication
23 17 97 0    124 
(regenerative) 18 98 1  
CR/LF selection
Instantaneous power PU display language
44 failure detection signal 2C AC 0    145 2D AD 1   
selection
clear
157 OL signal output timer 39 B9 1   
Power supply
AM terminal function
49 frequency monitoring 31 B1 0    158 3A BA 1   
selection
reference
Key lock operation
Input power 161 3D BD 1   
51 33 B3 0    selection
monitoring reference
168
DU/PU main display Parameter for manufacturer setting. Do not set.
52 34 B4 0    169
data selection
170 Watt-hour meter clear 46 C6 1   
Input voltage
53 35 B5 0    STF terminal function
monitoring reference 178 4E CE 1   
selection
FM/CA terminal
54 36 B6 0    STR terminal function
function selection 179 4F CF 1   
selection
Bus voltage
55 37 B7 0    RL terminal function
monitoring reference 180 50 D0 1   
selection
Current monitoring
56 38 B8 0    RM terminal function
reference 181 51 D1 1   
selection
57 Restart selection 39 B9 0   
RH terminal function
65 Retry selection 41 C1 0    182 52 D2 1   
selection
Number of retries at
67 43 C3 0    RT terminal function
fault occurrence 183 53 D3 1   
selection
68 Retry waiting time 44 C4 0   
AU terminal function
Retry count display 184 54 D4 1   
69 45 C5 0    selection
erase
JOG terminal function
Reset selection/ 185 55 D5 1   
selection
disconnected PU
75 4B CB 0    CS terminal function
detection/PU stop 186 56 D6 1   
selection
selection
MRS terminal function
Parameter write 187 57 D7 1   
77 4D CD 0    selection
selection
STOP terminal
Voltage control 188 58 D8 1   
80 50 D0 0    function selection
proportional gain
RES terminal function
Voltage control 189 59 D9 1   
81 51 D1 0    selection
integral gain
RDY signal logic
Current control 190 5A DA 1   
82 52 D2 0    selection
proportional gain
RSO signal logic
Current control 191 5B DB 1   
83 53 D3 0    selection
integral gain
IPF terminal function
Power factor 192 5C DC 1   
84 54 D4 0    selection
command value
OL terminal function
Power factor lead/lag 193 5D DD 1   
85 55 D5 0    selection
setting
FU terminal function
PU communication 194 5E DE 1   
117 11 91 1    selection
station number
ABC2 terminal
PU communication 196 60 E0 1   
118 12 92 1    function selection
speed
Cooling fan operation
PU communication 244 2C AC 2   
119 13 93 1    selection
stop bit length

190 APPENDIX
 Instruction Instruction
Parameter Parameter
code code

Extended

Extended
Pr. Name Pr. Name

All clear

All clear
Copy

Copy
Clear

Clear
Write

Write
Read

Read
Life alarm status C8 Current output bias
255 37 B7 2    1E 9E 9   
display (930) signal
Inrush current limit C9 Current output bias
256 38 B8 2    1E 9E 9   
circuit life display
(930) current
Control circuit
257 39 B9 2    C10 Current output gain
capacitor life display 1F 9F 9   
(931) signal
269 Parameter for manufacturer setting. Do not set.
C11 Current output gain
Monitor negative 1F 9F 9   
290 5A DA 2    (931) current
output selection
Inverter/converter 989 Parameter for manufacturer setting. Do not set.
328 1C 9C 3    990 PU buzzer control 5A DA 9   
switching
RS-485 PU contrast
991 5B DB 9   
331 communication station 1F 9F 3    adjustment
number 997 Fault initiation 61 E1 9   
RS-485 1006 Clock (year) 06 86 A   
332 20 A0 3   
communication speed 1007 Clock (month, day) 07 87 A   
RS-485 1008 Clock (hour, minute) 08 88 A   
333 communication stop 21 A1 3    Inrush current limit
1202 02 82 C   
bit length / data length circuit life setting
RS-485 R-S turns ratio
1344 2C AC D   
334 communication parity 22 A2 3    compensation
check selection T-S turns ratio
1345 2D AD D   
RS-485 compensation
335 communication retry 23 A3 3    1499 Parameter for manufacturer setting. Do not set.
count
RS-485
337 communication 25 A5 3   
waiting time setting
RS-485
341 communication CR/LF 29 A9 3   
selection
Communication
342 EEPROM write 2A AA 3   
selection
503 Maintenance timer 03 83 5   
Maintenance timer
504 warning output set 04 84 5   
time
547
Parameter for manufacturer setting. Do not set.
548
Energization time
563 3F BF 5   
carrying-over times
Control circuit
663 temperature signal 3F BF 6   
output level
686 Maintenance timer 2 56 D6 6   
Maintenance timer 2
687 warning output set 57 D7 6   
time
688 Maintenance timer 3 58 D8 6   
Maintenance timer 3
689 warning output set 59 D9 6   
time
867 AM output filter 43 C3 8   
869 Current output filter 45 C5 8   
888 Free parameter 1 58 D8 8   
889 Free parameter 2 59 D9 8   
Cumulative power
891 monitor digit shifted 5B DB 8   
times
C0 FM/CA terminal
00 80 9   
(900) calibration
C1 AM terminal
01 81 9   
(901) calibration

APPENDIX 191
Appendix 2 Instructions for compliance with
the EU Directives
The EU Directives are issued to standardize different national regulations of the EU Member States and to facilitate free
movement of the equipment, whose safety is ensured, in the EU territory.
Since 1996, compliance with the EMC Directive that is one of the EU Directives has been legally required. Since 1997,
compliance with the Low Voltage Directive, another EU Directive, has been also legally required. When a manufacturer
confirms its equipment to be compliant with the EMC Directive and the Low Voltage Directive, the manufacturer must declare
the conformity and affix the CE marking.
• The authorized representative in the EU
The authorized representative in the EU is shown below.
Company name: Mitsubishi Electric Europe B.V.
Address: Mitsubishi-Electric-Platz 1, 40882 Ratingen, Germany

EMC Directive
We declare that this high power factor converter conforms with the EMC Directive and affix the CE marking on the converter.
• EMC Directive: 2014/30/EU
• Standard(s): EN61800-3:2004+A1:2012 (Second environment / PDS Category "C3")
• This converter is not intended to be used on a low-voltage public network which supplies domestic premises. Ensure the
converter is suitable for the environment in which it is to be used when using it in residential areas.
• Radio frequency interference is expected if used on such a network.
• The installer shall provide a guide for installation and use, including recommended mitigation devices.

Note:
First environment
Environment including buildings/facilities which are directly connected to a low voltage main supply which also supplies
residential buildings. Directly connected means that there is no intermediate transformer between these buildings.
Second environment
Environment including all buildings/facilities which are not directly connected to a low voltage main supply which also supplies
residential buildings.

 Note
Install the converter with the EMC filter, and perform wiring according to the following instructions.
• Set the EMC Directive compliant EMC filter to the converter. Use a recommended EMC compliant EMC filter shown in
the table below. Insert line noise filters and ferrite cores to the power and control cables as required.
• Recommended EMC compliant EMC filter (Manufactured by: SOSHIN ELECTRIC CO., LTD.)
FR-A842- FR-A842- FR-A842- FR-A842- FR-A842-
Converter model
07700(315K) 08660(355K) 09620(400K) 10940(450K) 12120(500K)
EMC compliant EMC filter NF31000C-SDK NF31000C-SDK NF31000C-SDK NF31000C-SDK NF31000C-SDK
Rated filter current 1000A 1000A 1000A 1000A 1000A

• EMC Directive compliant EMC filter connection diagram

Reactor1
MC Fuse (FR-A8BL1)
MCCB
R/ R2/
L1 L12
EMC compliant S/ S2/
Power
EMC filter L2 L22
T/ T2/
L3 L32

• Connect the inverter and the converter to an earthed (grounded) power supply.
• Install the motor and controller cable found in the EMC Installation Manual (BCN-A21041-204) and Technical News
(MF-S-113, 115) according to the instructions.
• Ensure that the finalized system which includes an inverter and converter unit complies with the EMC Directive.

192 APPENDIX
Low Voltage Directive
We have self-confirmed our converters as products compliant to the Low Voltage Directive (Conforming standard EN 61800-
5-1) and affix the CE marking on the converters.

 Outline of instructions
• Do not use an earth leakage current breaker as an electric shock protector without connecting the equipment to the
earth. Connect the equipment to the earth (ground) securely.
• Wire the earth (ground) terminal independently. (Do not connect two or more cables to one terminal.)
• Use the earth (ground) cable and the cable sizes on page 38 under the following conditions.
• Surrounding air temperature: 40°C maximum
If conditions are different from above, select appropriate wire according to EN60204.
• Use a tinned (plating should not include zinc) crimping terminal to connect the earth (ground) cable. When tightening
the screw, be careful not to damage the threads.
For use as a product compliant with the Low Voltage Directive, use a PVC cable whose size is indicated on page 38.
• Use the molded case circuit breaker and magnetic contactor which conform to the EN or IEC Standard.
• DC current may flow from the converter to a protective earth (ground) conductor. When using a residual current device
(RDC) or residual current monitor (RDM), connect a type B RCD or RCM to the power supply side.
• Use the converter under the conditions of overvoltage category II (usable regardless of the earth (ground) condition of
the power supply), overvoltage category III (usable with the earth-neutral system power supply, 400 V class only) and
pollution degree 2 or lower specified in IEC60664.
• To use the converter under the conditions of pollution degree 2, install it in the enclosure of IP2X or higher.
• To use the converter under the conditions of pollution degree 3, install it in the enclosure of IP54 or higher.
• On the input and output of the inverter and the converter, use cables of the type and size set forth in EN60204.
• The operating capacity of the relay outputs (terminal symbols A1, B1, C1, A2, B2, C2) should be 30 VDC, 0.3 A. (Relay
output has basic isolation from the internal circuit of the inverter and the converter.)
• Control circuit terminals on page 40 are safely isolated from the main circuit.
• The amount of current leakage from the converter measures 20 mA at maximum (in AC/DC current measuring range
specified in IEC 60990).
• Environment (For the detail, refer to page 24.)
During Operation In Storage During Transportation
Surrounding air temperature -10 to +50°C -20 to +65°C -20 to +65°C
Ambient humidity 95% RH or less 95% RH or less 95% RH or less
Maximum altitude 2500 m 2500 m 10000 m

 For the installation at an altitude above 1000 m, consider a 3% reduction in the rated current per 500 m increase in altitude.

 Wiring protection
Provide the UL and cUL listed fuse in accordance with the table below.
Converter model Fuse type Manufacturer Rating
FR-A842-07700(315K) 170M6111 Bussmann 700 V, 700 A
FR-A842-08660(355K) 170M6112 Bussmann 700 V, 800 A
FR-A842-09620(400K) 170M6113 Bussmann 700 V, 900 A
FR-A842-10940(450K) 170M6114 Bussmann 700 V, 1000 A
FR-A842-12120(500K) 170M6115 Bussmann 700 V, 1100 A

Fuse connection diagram

Reactor1
MC Fuse (FR-A8BL1)
MCCB
R/ R2/
L1 L12
EMC compliant S/ S2/
Power
EMC filter L2 L22
T/ T2/
L3 L32

 Short circuit ratings

Suitable for use in a circuit capable of delivering not more than 100 kA rms symmetrical amperes, 500 V maximum.

APPENDIX 193
Appendix 3 Instructions for UL and cUL
(Standard to comply with: UL 508C, CSA C22.2 No.274-13)

General precaution
CAUTION - Risk of Electric Shock -
The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power off, wait for more than 10
minutes, and check for residual voltage between terminal P/+ and N/- with a meter etc., to avoid a hazard of electrical shock.
ATTENTION - Risque de choc électrique -
La durée de décharge du condensateur de bus est de 10 minutes. Avant de commencer le câblage ou l’inspection, mettez
l’appareil hors tension et attendez plus de 10 minutes.

Installation
The below types of high power factor converter have been approved as products for use in enclosure.
Design the enclosure so that the surrounding air temperature, humidity and ambience of the converter will satisfy the above
specifications. (Refer to page 24.)
 Branch circuit protection
For installation in the United States, branch circuit protection must be provided in accordance with the National Electrical
Code and any applicable provincial codes.
For installation in Canada, branch circuit protection must be provided in accordance with the Canadian Electrical Code
and any applicable provincial codes.
Provide the appropriate fuse in accordance with the table below.
Converter model Fuse type Manufacturer Rating
FR-A842-07700(315K) 170M6111 Bussmann 700 V, 700 A
FR-A842-08660(355K) 170M6112 Bussmann 700 V, 800 A
FR-A842-09620(400K) 170M6113 Bussmann 700 V, 900 A
FR-A842-10940(450K) 170M6114 Bussmann 700 V, 1000 A
FR-A842-12120(500K) 170M6115 Bussmann 700 V, 1100 A

Fuse connection diagram

Reactor1
MC Fuse (FR-A8BL1)
MCCB
R/ R2/
L1 L12
EMC compliant S/ S2/
Power
EMC filter L2 L22
T/ T2/
L3 L32

Wiring to the power supply and the motor

Refer to the National Electrical Code (Article 310) regarding the allowable current of the cable. Select the cable size for 125%
of the rated current according to the National Electrical Code (Article 430).
For wiring the input (R/L1, S/L2, T/L3) terminals of the converter and output (U, V, W) terminals of the inverter, use the UL
listed copper, stranded wires (rated at 75°C) and round crimping terminals. Crimp the crimping terminals with the crimping tool
recommended by the terminal maker.

Short circuit ratings

Suitable for use in a circuit capable of delivering not more than 100 kA rms symmetrical amperes, 500 V maximum.

194 APPENDIX
Combination of the converter and the inverter (Back-to-back connection)
Use the converter in combination with the inverter specified in the following table. In addition, it is necessary to use the
peripheral devices specified in the following table for the use of the converter (the peripheral devices are only UL-approved
when used with the converter).
Dedicated
Phase circuit
Applicable
detection parts for Filter
motor Converter Plug-in Reactor 1 Reactor 2 Inverter Applicable
transformer inrush capacitor
capacity option rating
box current
protection
FR-A842- FR-A8MC- FR-A8BL1- FR-A8BL2- FR-A8BC- FR-A842-
315kW FR-A8AVP FR-A8VPB-H ND
07700(315K) H355K H315K H315K H400K 07700(315K)
FR-A842- FR-A8MC- FR-A8BL1- FR-A8BL2- FR-A8BC- FR-A842-
355kW FR-A8AVP FR-A8VPB-H ND
08660(355K) H355K H355K H355K H400K 08660(355K)
FR-A842- FR-A8MC- FR-A8BL1- FR-A8BL2- FR-A8BC- FR-A842-
400kW FR-A8AVP FR-A8VPB-H ND
09620(400K) H500K H400K H400K H400K 09620(400K)
FR-A842- FR-A8MC- FR-A8BL1- FR-A8BL2- FR-A8BC- FR-A842-
450kW FR-A8AVP FR-A8VPB-H ND
10940(450K) H500K H450K H450K H500K 10940(450K)
FR-A842- FR-A8MC- FR-A8BL1- FR-A8BL2- FR-A8BC- FR-A842-
500kW FR-A8AVP FR-A8VPB-H ND
12120(500K) H500K H500K H500K H500K 12120(500K)

Appendix 4 Instructions for EAC

The product certified in compliance with the Eurasian Conformity has the EAC marking.

Note: EAC marking

In 2010, three countries (Russia, Belarus, and Kazakhstan) established a Customs Union for the purposes of revitalizing the
economy by forming a large economic bloc by abolishing or reducing tariffs and unifying regulatory procedures for the
handling of articles.
Products to be distributed over these three countries of the Customs Union must comply with the Customs Union Technical
Regulations (CU-TR), and the EAC marking must be affixed to the products.

For information on the country of origin, manufacture year and month, and authorized sales representative (importer) in the
CU area of this product, refer to the following:
• Country of origin indication
Check the rating plate of the product. (Refer to page 9.)
Example: MADE IN JAPAN

• Year and month of manufacture

Check the SERIAL number indicated on the rating plate of the product. (Refer to page 9.)

   
Symbol Year Month Control number
SERIAL
The SERIAL consists of one symbol, two characters indicating the production year and month, and six characters indicating the control number.
The last digit of the production year is indicated as the Year, and the Month is indicated by 1 to 9, X (October), Y (November), or Z (December).

• Authorized sales representative (importer) in the CU area

The authorized sales representative (importer) in the CU area is shown below.
Name: Mitsubishi Electric (Russia) LLC
Address: 52, bld 1 Kosmodamianskaya Nab 115054, Moscow, Russia
Phone: +7 (495) 721-2070
FAX: +7 (495) 721-2071

APPENDIX 195
Appendix 5 Restricted Use of Hazardous
Substances in Electronic and
Electrical Products
The mark of restricted use of hazardous substances in electronic and electrical products is applied to the product as follows
based on the "Management Methods for the Restriction of the Use of Hazardous Substances in Electrical and Electronic
Products" of the People's Republic of China.

电器电子产品有害物质限制使用标识要求

环境保护使用
期限标识

本产品中所含有的有害物质的名称、含量、含有部件如下表所示。

·产品中所含有害物质的名称及含量

有害物质
部件名称 铅 汞 镉 六价铬 多溴联苯 多溴二苯醚
(Pb) (Hg) (Cd) (Cr(VI)) (PBB) (PBDE)
电路板组件（包括印刷电
路板及其构成的零部件，
× ○ × ○ ○ ○
如电阻、电容、集成电路、
连接器等）、电子部件
金属壳体、金属部件 × ○ ○ ○ ○ ○
树脂壳体、树脂部件 ○ ○ ○ ○ ○ ○
螺丝、电线 ○ ○ ○ ○ ○ ○
上表依据SJ/T11364的规定编制。
○：表示该有害物质在该部件所有均质材料中的含量均在GB/T26572规定的限量要求以下。
×：表示该有害物质在该部件的至少一种均质材料中的含量超出GB/T26572规定的限量要求。
 即使表中记载为×，根据产品型号，也可能会有有害物质的含量为限制值以下的情况。
 根据产品型号，一部分部件可能不包含在产品中。

Appendix 6 Referenced Standard

(Requirement of Chinese
standardized law)
This Product is designed and manufactured accordance with following Chinese standards.

EMC : GB/T 12668.3

196 APPENDIX
WARRANTY

When using this product, make sure to understand the warranty described below.

1. Warranty period and coverage

We will repair any failure or defect (hereinafter referred to as "failure") in our FA equipment (hereinafter referred to as the "Product") arisen during warranty
period at no charge due to causes for which we are responsible through the distributor from which you purchased the Product or our service provider.
However, we will charge the actual cost of dispatching our engineer for an on-site repair work on request by customer in Japan or overseas countries. We are
not responsible for any on-site readjustment and/or trial run that may be required after a defective unit are repaired or replaced.
[Term]
The term of warranty for Product is twelve months after your purchase or delivery of the Product to a place designated by you or eighteen months from the
date of manufacture whichever comes first ("Warranty Period"). Warranty period for repaired Product cannot exceed beyond the original warranty period
before any repair work.
[Limitations]
(1) You are requested to conduct an initial failure diagnosis by yourself, as a general rule. It can also be carried out by us or our service company upon your
request and the actual cost will be charged.
However, it will not be charged if we are responsible for the cause of the failure.
(2) This limited warranty applies only when the condition, method, environment, etc. of use are in compliance with the terms and conditions and instructions
that are set forth in the instruction manual and user manual for the Product and the caution label affixed to the Product.
(3) Even during the term of warranty, the repair cost will be charged on you in the following cases;
•a failure caused by your improper storing or handling, carelessness or negligence, etc., and a failure caused by your hardware or software problem
•a failure caused by any alteration, etc. to the Product made on your side without our approval
•a failure which may be regarded as avoidable, if your equipment in which the Product is incorporated is equipped with a safety device required by
applicable laws and has any function or structure considered to be indispensable according to a common sense in the industry
•a failure which may be regarded as avoidable if consumable parts designated in the instruction manual, etc. are duly maintained and replaced
•any replacement of consumable parts (condenser, cooling fan, etc.)
•a failure caused by external factors such as inevitable accidents, including without limitation fire and abnormal fluctuation of voltage, and acts of God,
including without limitation earthquake, lightning and natural disasters
•a failure generated by an unforeseeable cause with a scientific technology that was not available at the time of the shipment of the Product from our
company
•any other failures which we are not responsible for or which you acknowledge we are not responsible for
2. Term of warranty after the stop of production
(1) We may accept the repair at charge for another seven (7) years after the production of the product is discontinued. The announcement of the stop of
production for each model can be seen in our Sales and Service, etc.
(2) Please note that the Product (including its spare parts) cannot be ordered after its stop of production.
3. Service in overseas
Our regional FA Center in overseas countries will accept the repair work of the Product; however, the terms and conditions of the repair work may differ
depending on each FA Center. Please ask your local FA center for details.
4. Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi Electric shall not be liable for compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi Electric.
(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi Electric products.
(3) Special damages and secondary damages whether foreseeable or not, compensation for accidents, and compensation for damages to products other
than Mitsubishi Electric products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run and other tasks.
5. Change of Product specifications
Specifications listed in our catalogs, manuals or technical documents may be changed without notice.
6. Application and use of the Product
(1) For the use of our product, its applications should be those that may not result in a serious damage even if any failure or malfunction occurs in product,
and a backup or fail-safe function should operate on an external system to product when any failure or malfunction occurs.
(2) Our product is designed and manufactured as a general purpose product for use at general industries.
Therefore, applications substantially influential on the public interest for such as atomic power plants and other power plants of electric power
companies, and also which require a special quality assurance system, including applications for railway companies and government or public offices
are not recommended, and we assume no responsibility for any failure caused by these applications when used.
In addition, applications which may be substantially influential to human lives or properties for such as airlines, medical treatments, railway service,
incineration and fuel systems, man-operated material handling equipment, entertainment machines, safety machines, etc. are not recommended, and
we assume no responsibility for any failure caused by these applications when used.
We will review the acceptability of the abovementioned applications, if you agree not to require a specific quality for a specific application. Please
contact us for consultation.

197
REVISIONS
*The manual number is given on the bottom left of the back cover.

Revision Date *Manual Number Revision

Jan. 2018 IB(NA)-0600777ENG-A First edition
May 2018 IB(NA)-0600777ENG-B Addition
• FR-A842-07700(315K) to 10940(450K)
Feb. 2019 IB(NA)-0600777ENG-C Modification
• Instructions for compliance with the EU Directives
• Instructions for UL and cUL
• Referenced Standard (Requirement of Chinese standardized law)

198 IB(NA)-0600777ENG-C
 INVERTER
INVERTER
Plug-in option
FR-A8AVP
INSTRUCTION MANUAL (FOR INVERTER/CONVERTER SWITCHING)
Changeover between inverter and
high power factor converter
Compatible inverters: FR-A842-07700(315K) to 12120(500K)

OUTLINE
1
INVERTER-TO-
CONVERTER 2
CONVERSION
INSTALLATION AND
WIRING 3

FR-A8AVP INSTRUCTION MANUAL (FOR INVERTER/CONVERTER SWITCHING)

PRECAUTIONS FOR USE
OF THE CONVERTER 4
PARAMETERS
5
PROTECTIVE FUNCTIONS
6
PRECAUTIONS FOR
MAINTENANCE AND 7
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
INSPECTION
SPECIFICATIONS
8
CONVERTER-TO-
INVERTER CONVERSION 9

IB(NA)-0600777ENG-C(1902)MEE Printed in Japan Specifications subject to change without notice. C