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Digital Thyristor Power Conroller

DPU Series
User Manual

DPU Series

Thank you very much for selecting Autonics products.

For your Safety, please read the following before using.


ii © Copyright Reserved Autonics Co., Ltd.

 Preface

Preface
Thank you for purchasing Autonics product.
Please familiarize yourself with the information contained in the Safety Considerations section
before using this product.
This user manual contains information about the product and its proper use, and should be kept in
a place where it will be easy to access.

© Copyright Reserved Autonics Co., Ltd. iii

 User Manual Guide

User Manual Guide

●●Please familiarize yourself with the information in this manual before using the product.
●●This manual provides detailed information on the product’s features. It does not offer any
guarantee concerning matters beyond the scope of this manual.
●●This manual may not be edited or reproduced in either part or whole without permission.
●●A user manual is not provided as part of the product package.
●●Visit our web site (www.autonics.com) to download a copy.
●●The manual’s content may vary depending on changes to the product’s software and other
unforeseen developments within Autonics, and is subject to change without prior notice.
Upgrade notice is provided through out Autonics web site.
●●We contrived to describe this manual more easily and correctly. However, if there are any
corrections or questions, please notify us these on Autonics web site.

iv © Copyright Reserved Autonics Co., Ltd.

 User Manual Symbols

User Manual Symbols

Symbol Description

Supplementary information for a particular feature.

Failure to follow instructions can result in serious injury or death.

Failure to follow instructions can lead to a minor injury or product damage.

An example of the concerned feature’s use.

※1 Annotation mark.

© Copyright Reserved Autonics Co., Ltd. v

 Safety Considerations

Safety Considerations
●●Following these safety considerations will ensure the safe and proper use of the product and help
prevent accidents and minimize hazards.
●●Safety considerations are categorized as Warnings and Cautions, as defined below:

Cases that may cause serious injury or fatal accident if

Warning instructions are not followed.

Cases that may cause minor injury or product damage

Caution if instructions are not followed.

●●Caution for wiring

If malfunction or error of this unit cause serious accident, install the external protection circuit
properly.
This unit does not have power switch. Please install an external power switch.
To prevent electric shock, ground it 1st grounding and supply an electric current to this unit.
●●Power
To prevent damage or malfunction of this unit, supply the rated power to this unit.
To prevent electric shock and malfunction of this unit, do not supply the power before completing
wiring.
●●Ban for using in gas
It is not an explosion structure. Do not use this unit where there are flammable or explosive
gases.
●●Connections
Do not disassemble or modify this unit. It may cause malfunction, electric shock, or a fire.
Do not touch the terminals during power ON. It may cause malfunction, or electric shock.
●●Caution for maintenance
Turn OFF the power before removing this unit. It may cause electric shock, cause malfunction,
damage to this unit or electric shock.
To use this unit safely, it is recommended to maintenance this unit regularly.
Only for proper usage, the term of guarantee for this unit with accessories is 1 year.
●●Environment
When using this unit indoor, do not use this in the place where electric device is damaged by
flammable or explosive gas, high humidity, salinity, dust, etc.

vi © Copyright Reserved Autonics Co., Ltd.

 Safety Considerations

●●Caution for usage (Do not install this unit at the following places.)
The place where ambient temperature is over -10 to 50℃ range.
The place where ambient humidity is over 5 to 90%RH.
The place where temperature changes are rapid and there is dew condensation.
The place where there is corrosive gas (especially oil gas, ammonia, etc), or flammable gas.
The place where there is vibration or shock to the unit.
The place where there is water, oil, drug, or steam.
The place where there is lots of dust and dirt, salinity, or iron.
The place where big inducement malfunction, static, or magnetism noise occurs easily.
The place where there is direct ray of the sun.
The place where thermal heat builds up by radiant heat.
Do not open the cover automatically to move this unit.
●●Installations
Tighten this unit with bolts as accessories on the panel.
If water enters this unit, you must inspect this unit. It may cause short circuit, or a fire.
When installing this unit, use safety protections such as safety shoes, and helmet, etc and be
sure that the safety.
Be sure that not to put the legs or sit on this unit.
●●Temporary storage
Fix this unit with transportation screws to store this unit temporarily.
Store this unit as below environments.
The place where there is no dregs, flammable gas, explosive gas (SO2, H2SO, etc).
The place where there is no vibration, shock
The place where there is no steam or not too much hot humidity (95%RH)
The place where it is not extreme low temperature (below -20℃)
●●Caution for wiring
Do not use empty terminals during wiring I/O to other usage.
Consider a countermeasure for lots of noises.
●●Cleaning
In cleaning the unit, use dry cloth.
Do not use organic solvent.
Turn off the power to clean this unit.

The specifications, dimensions, etc are subject to change without notice.

© Copyright Reserved Autonics Co., Ltd. vii

Safety Considerations

viii © Copyright Reserved Autonics Co., Ltd.

 Table of Contents

Table of Contents
Preface������������������������������������������������������������������������������������������������������� iii
User Manual Guide������������������������������������������������������������������������������� iv
User Manual Symbols��������������������������������������������������������������������������� v
Safety Considerations������������������������������������������������������������������������� vi
Table of Contents���������������������������������������������������������������������������������� ix
1. Product Introduction���������������������������������������������������������������������� 11
1.1 Features������������������������������������������������������������������������������������������������������������������11
1.2 Ordering information���������������������������������������������������������������������������������������12
1.3 Unit description��������������������������������������������������������������������������������������������������13
2. Specifications����������������������������������������������������������������������������������� 15
3. Dimensions���������������������������������������������������������������������������������������� 17
3.1 1-phase (DPU1 series)�������������������������������������������������������������������������������������17
3.2 3-phase (DPU3 series)�������������������������������������������������������������������������������������19
4. Connections��������������������������������������������������������������������������������������� 21
4.1 1-phase (DPU1 series)�������������������������������������������������������������������������������������21
4.2 3-phase (DPU3 series)�������������������������������������������������������������������������������������23
5. Installation and Initial Operation����������������������������������������������� 25
5.1 Installation�������������������������������������������������������������������������������������������������������������25
5.2 Initial display��������������������������������������������������������������������������������������������������������25
5.3 Parameter setting group��������������������������������������������������������������������������������25
5.3.1 Parameters������������������������������������������������������������������������������������������������25
5.3.2 Monitoring Mode���������������������������������������������������������������������������������������26
5.3.3 Operation Mode [OP]���������������������������������������������������������������������������������27
5.3.4 Setting Mode 1 [ST-1]������������������������������������������������������������������������������28
5.3.5 Setting Mode 2 [ST-2]������������������������������������������������������������������������������29
6. Parameter Setting and Functions��������������������������������������������� 31
6.1 Control input��������������������������������������������������������������������������������������������������������31
6.2 Functions���������������������������������������������������������������������������������������������������������������32
6.2.1 Control method [C-MD]�����������������������������������������������������������������������������32
6.2.2 Soft start [ST-T]����������������������������������������������������������������������������������������35
6.2.3 Start limit [S-LM] and start limit time [S-LT]�����������������������������������������36

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 Table of Contents

Table of Contents
6.2.4 Output slope setting [SLOP]���������������������������������������������������������������������36
6.2.5 Output slope manual adjustment [A-GA]������������������������������������������������37
6.2.6 Base-up [B-UP]�����������������������������������������������������������������������������������������37
6.2.7 Slow up/Slow down [UP-T/DN-T]����������������������������������������������������������38
6.2.8 Output high limit value [H-OL], Output low limit value [L-OL]�������������38
6.2.9 Digital input (DI)����������������������������������������������������������������������������������������39
6.2.10 Proportional and integral constant set of feedback control�����������������41
6.2.11 Input correction[IN-B]�����������������������������������������������������������������������������42
6.2.12 Input slope correction [SPAN]������������������������������������������������������������������42
6.2.13 Display value content [DISP], bar graph content [BAR]������������������������42
6.2.14 Load resistance display method [DRES]�������������������������������������������������43
6.2.15 Full load auto recognition [F-LD]������������������������������������������������������������44
6.2.16 Parameter lock [LOCK]������������������������������������������������������������������������������44
6.3 Alarm������������������������������������������������������������������������������������������������������������������������45
6.3.1 Overcurrent alarm [OC-A]������������������������������������������������������������������������45
6.3.2 Current limit [C-LM]����������������������������������������������������������������������������������45
6.3.3 Overvoltage alarm [OV-A]������������������������������������������������������������������������46
6.3.4 Fuse disconnection alarm [FUSE]�����������������������������������������������������������46
6.3.5 Heatsink overheating alarm [HEAT]���������������������������������������������������������46
6.3.6 Element error alarm [SCR]������������������������������������������������������������������������46
6.3.7 Heater disconnection alarm [HB-A]��������������������������������������������������������47
7. Factory Default��������������������������������������������������������������������������������� 49
8. Maintenance��������������������������������������������������������������������������������������� 51
8.1 Fuse��������������������������������������������������������������������������������������������������������������������������51
8.1.1 1-phase (DPU1 series)������������������������������������������������������������������������������51
8.1.2 3-phase (DPU3 series)������������������������������������������������������������������������������52
8.2 Thyristor (SCR)���������������������������������������������������������������������������������������������������52
9. Modbus Mapping Table����������������������������������������������������������������� 53
9.1 Function code 3 (0×03) = Read holding resisters������������������������������53
9.2 Function code 4 (0×04) = Read input resisters�����������������������������������53
9.3 Function code 6 (0×06) = Write single resisters���������������������������������54
9.4 Function code 16 (0×10) = Write multiple resisters��������������������������54
9.5 Address mapping table�����������������������������������������������������������������������������������55
9.5.1 Input resisters�������������������������������������������������������������������������������������������55
9.5.2 Holding resisters���������������������������������������������������������������������������������������57

x © Copyright Reserved Autonics Co., Ltd.

 1. Product Introduction

1. Product Introduction
1.1 Features
●●Fast response speed and high accuracy by high-speed CPU
●●Accurate feedback control (static current, static voltage, static power) by RMS measurement
●●Phase control and zero-crossing cycle control (fixed/variable cycle) method for various load
control
●●Remote monitoring and remote control
●●Supports Modbus RTU protocol by RS485 communication
●●Built-in customizable 6 digital inputs (DI)
●●Basic variable alarm outputs; current error, heater disconnection (heater some disconnection
detection), etc.
●●Supports multi input of control input signal (current, voltage, potentionmeter, etc)
●●Enables to install control part separately
●●Applicable load: all loads such as super kanthal, platinum, molybdenum, carbon, halogen lamp,
chrome, nickel, etc.

© Copyright Reserved Autonics Co., Ltd. 11

 Table of Contents

1.2 Ordering information

DPU 1 2 A 025 R
R RS485 communication
Option D Remote Display Unit
Remote Display Unit
A
+ RS485 communication
Rated current N No option
capacity

025 25A 200 200A

040 40A 250 250A
050 50A 350 350A
070 70A 400 400A
080 80A 500 500A
100 100A 600 600A
120 120A
150 150A
180 180A

1-phase 3-phase
A 0 to 70A 0 to 50A
Size B 80 to 200A 70 to 200A
C 250 to 350A
D 400 to 600A
E Option

1 110VAC
Power supply 2 220VAC
3 380VAC
4 440VAC

Control phase 1 1-phase

3 3-phase
Item
DPU Digital Power Controller Unit

12 © Copyright Reserved Autonics Co., Ltd.

 Table of Contents

1.3 Unit description

① ② ③ ④ ①② ③

⑤
⑥ ⑥

⑦ ⑦
⑧

⑩ ⑩

<1-phase> <3-phase>

① RUN indicator: Turns ON in RUN, turns OFF in STOP.

② AUTO indicator: Turns ON in AUTO, turns OFF in MANUAL.
③ EVT indicator: Turns ON in Digital Input (DI-1 to 3) ON, flashes in alarm output.
④ R, S, T lamp: Turns ON differently by displayed value in display part.
E.g.) When R, S lamps turn ON, it displays voltage between R-S line
⑤ Display part: Displays selected display value content in RUN mode, displays parameter and set
value in SET mode.
⑥ V, A indicators: The V indicator turns ON when displaying voltage.
The A indicator turns ON when displaying current.
The V, A indicators turn ON when displaying power.
The V, A indicators turn OFF when displays resistance and input value.
⑦ Bar display: Turns ON as 0 to 100% ratio for selected display value.
⑧ key: Used to enter parameter mode, monitoring mode and to move between parameters.
⑨ , key: Used to move setting modes and to set parameters.
⑩ key: Used to return to RUN mode from SET mode

© Copyright Reserved Autonics Co., Ltd. 13

Table of Contents

14 © Copyright Reserved Autonics Co., Ltd.

 2. Specifications

2. Specifications
Series DPU1 DPU3
Control phase 1-phase 3-phase
110VACᜠ/220VACᜠ/380VACᜠ/440VACᜠ
Power supply
(FAN and control power 220VACᜠ 50/60Hz separately)
Allowable voltage 90 to 110% of rated voltage 85 to 115% of rated voltage
Rated frequency 50/60Hz (auto recognition), allowable frequency range: ±2Hz
Min. load current 1A
Output range Phase control: 5 to 98%, Z.C. control: 0 to 100%
• Phase control
: Normal control (Non-Feedback), static voltage/static current/static power control (Feedback)
Control method※1
• Cycle control (Z.C.): Fixed cycle control, variable cycle control
• ON/OFF control (Z.C.)
• Phase control: resistance load, inductive load
Load
• ON/OFF, Cycle control: resistance load
Power consumption Max. 7W (except FAN operation power) Max. 10W (except FAN operation power)
• Display value and SV display • Display value and SV display
: 7-segment 4 digit : 7-segment 4 digit
Display method
• Status display: 4 LED • Status display: 6 LED
• Display value percentage display: 11 LED Bar • Display value percentage display: 11 LED Bar
• Static voltage feedback control
: Within ±3% F.S. of rated voltage (within variable ±10% F.S. of rated voltage)
• Static current feedback control
: Within ±3% F.S. of rated voltage (within variable 1 to 10 times of rated resistance)
Output accuracy
• Static power feedback control
: Within ±3% F.S. of rated voltage (within variable ±10% F.S. of rated voltage and within
variable 1 to 10 times of rated resistance)
• Normal control: within ±10% F.S. of rated voltage
Set method By front keys, by communication
• Auto: 4-20mA / 0-20mA / 0-5VDCᜡ / 1-5VDCᜡ / 0-10VDCᜡ / voltage pulse(0/12VDCᜡ(24VDCᜡ))
Control input / no-voltage input (ON/OFF) / communication input(RS485)
• Manual: inside 10kΩ adjuster, outside 3 to 10kΩ adjuster (min. 2W)
Digital input(DI) AUTO/MAN switching, RUN/STOP switching, RESET, Output holding, SP setting (SP1 to 6)
Display content Control input, load voltage, load current, load power, load resistance, power supply frequency
Min. display output Min. 2.5% of rated voltage/current
Option output RS485 communication output (Modbus RTU method), [max. 32 units]
Dielectric strength 2,000VAC 50/60 Hz for 1 min (between input terminal and power terminal)
Vibration 0.75mm amplitude at frequency of 5 to 55Hz (for 1 min) in each of X, Y, Z directions for 2 hours
Insulation resistance Over 200MΩ(at 500VDC megger)
Noise immunity ±2kV the square wave noise (pulse width 1㎲) by the noise simulator
Environ Ambient temp. 10 to 50℃, storage: 20 to 80℃
ment Ambient humi. 5 to 90%RH, storage: 5 to 90%RH
Approval ᜢ
• A size •B  size • A size •B
 size
:A  pprox. 3.2kg :A pprox. 5.6kg :A  pprox. 7.6kg :A pprox. 13.0kg
※2 (approx. 3.0kg) (approx. 3.0kg) (approx. 6.5kg) (approx. 11.5kg)
Weight
• C size • D size • C size •A
 pprox. size
:A pprox. 12.1kg :A pprox. 19.3kg :A pprox. 21.1kg :A pprox. 35.7kg
(approx. 11.0kg) (approx. 11.0kg) (approx. 20.0kg) (approx. 30.8kg)
※1. Variable cycle control is only for 1-phase model.
※2. The weight includes packaging. The weight in parenthesis is for unit only.
※Environment resistance is rated at no freezing or condensation.

© Copyright Reserved Autonics Co., Ltd. 15

 2. Specifications

Communication specifications
Protocol Modbus RTU
Connection type RS485
Application standard Compliance with EIA RS485
Max. connection 32 units (address: 01 to 64)
Synchronization method Asynchronous
Communication method 2-wire half duplex
Communication distance Max. 800m
Communication speed 4800, 9600, 19200, 38400bps
Communication response wait time 5 to 99ms
Start bit 1bit (fixed)
Data bit 8bit (fixed)
Parity bit Even (fixed)
Stop bit 2-bit (fixed)

16 © Copyright Reserved Autonics Co., Ltd.

 3. Dimensions

3. Dimensions
3.1 1-phase (DPU1 series)
(unit: mm)
(1) A Size: DPU1 A-025 / 040 / 050 / 070
60

154
30

80
40

135°
260
150(P2)

209.5

170
147
Fixed 4-M5

110
3

82(P1)
97

※25A, 40A, 50A are not attached a fan.

(2) B Size: DPU1 B - 080 / 100 / 120 / 150 / 180 / 200

120

222
30
50

120
135°
150(P2)

280

241.5

174
151

Fixed 4-M5
121.5
3

127(P1)

140

© Copyright Reserved Autonics Co., Ltd. 17

3. Dimensions

(3) C Size: DPU1 C - 250 / 350

38
365

50
160°

338
200(P2)

300

163
Fixed 4-M6

132
4
193(P1) 179 213
213

(4) D Size: DPU1 D - 400 / 500 / 600

38

494
40

160°
200(P2)

280

345
418

Fixed 4-M6

195
156
4

261(P1) 90 250
278 212 278

● In case of remote display unit + RS485 communication option

※Panel cut-out of the remote
display model.
102

102

100.5 00.5

55 55

0.5
53.5 0

It is recommended for remote panel cable to use max. 5 m to prevent noise.

(Check the length when ordering it.)

18 © Copyright Reserved Autonics Co., Ltd.

 3. Dimensions

3.2 3-phase (DPU3 series)

(unit: mm)
(1) A Size: DPU3 A - 025 / 040 / 050
235.6

160°
150(P2)

306

Fixed 4-M5

239
200
138
26 63.5

127(P1) 182

140

(2) B Size: DPU3 B - 070 / 080 / 100 / 120 / 150 / 180 / 200
364
40

160°
200(P2)

280

365

278
Fixed 4-M6

217
176
43.1

195(P1) 199 183

213

● In case of remote display unit + RS485 communication option

※Panel cut-out of the remote display model
102

+0.5
0
100.5

55

53.5 +0.5
0

It is recommended for remote panel cable to use max. 5 m to prevent noise.

(Check the length when ordering it.)
© Copyright Reserved Autonics Co., Ltd. 19
3. Dimensions

(3) C Size: DPU3 C - 250 / 350

92.5

125.5
40
40
200(P2)

489

450
280

370
Fixed 4-M6 160°

311
227.5
173.5
261(P1) 140.5

278

(4) D Size: DPU3 D - 400 / 500 / 600

167
32.5
330(P2)

463

528
453

Fixed 4-M8
66.5

204.5

405(P1) 167

427
746

160°
404.5
275.5
204.5

20 © Copyright Reserved Autonics Co., Ltd.

 4. Connections

4. Connections
4.1 1-phase (DPU1 series)
● A Size ● B Size

Internal adjuster(10kΩ)
3-level slide
switch

R S U F.G.
R S U F.G.

● C Size ● D Size

R U S F.G.

R S U F.G.

© Copyright Reserved Autonics Co., Ltd. 21

4. Connections

※1. Do not mix noise to input cable.

It is recommended to use shield cable,
twisted cable as input cable for effective noise.
※2. If there is possible to affect inductive noise,
it is recommended to use shielded cable at high-frequency power for effective noise.
※3. DI input switch should be for low current and ON resistance should be max. 20Ω (including cable
resistance).
※4. DI input terminals are COM, DI-1 to 3, RUN, AUTO.
※5. For remote display unit option model,
use connection cable as our standard cable.
※6. When connecting ⑥, ⑪ , it operates as MANUAL. When connecting, ⑥, ⑦, ⑪,
it operates AUTO.

22 © Copyright Reserved Autonics Co., Ltd.

 4. Connections

4.2 3-phase (DPU3 series)

● A Size ● B Size
L1 L2 L3 L1 L2 L3
(R) (S) (T) F.G. (R) (S) (T) F.G.

Internal adjuster (10kΩ)

3-level slide
switch

U V W

U V W

● C Size ● D Size
L1 L2 L3 L1 L2 L3
(R) (S) (T) F.G. (R) (S) (T) F.G.

U V W

U V W

© Copyright Reserved Autonics Co., Ltd. 23

4. Connections

Input

Voltage

Voltage Input

External VR

LOAD

LOAD

LOAD

※1. Do not mix noise to input cable.

It is recommended to use shield cable, twisted cable as input cable for effective noise.
※2. If there is possible to affect inductive noise,
it is recommended to use shielded cable at high-frequency power for effective noise.
※3. DI input switch should be for low current and ON resistance should be max. 20Ω
(including cable resistance).
※4. DI input terminals are COM, DI-1 to 3, RUN, AUTO.
※5. For remote display unit option model,
use connection cable as our standard cable.
※6. When connecting ⑥, ⑪ , it operates as MANUAL. When connecting, ⑥, ⑦, ⑪, it operates AUTO.

24 © Copyright Reserved Autonics Co., Ltd.

 5. Installation and Initial Operation

5. Installation and Initial Operation

5.1 Installation
Turn OFF the main power and open the front cover.
Wire it according to the connection diagrams.

5.2 Initial display

When turning ON the power to the unit, front displays flash for 1 sec and it displays product
version, rated voltage, rated current and operates RUN mode.
② Displays ③D
 isplays rated ④ D
 isplays rated
① Whole flashes ⑤R
 UN mode
product version voltage current

1-phase

3-phase

5.3 Parameter setting group

5.3.1 Parameters
RUN
mode
1 sec 3 sec

Monitoring Operating mode Setting mode 1 Setting mode 2

mode
OP ST-1 ST-2

Mode Descriptions
Monitoring Mode Monitors input value, load voltage/current/power/resistance, power frequency.
Operating Mode[OP] Sets parameters for DPU operation
Setting Mode 1[ST-1] Sets parameters for details set.
Setting Mode 2[ST-2] Sets parameters for alarm

© Copyright Reserved Autonics Co., Ltd. 25

 5. Installation and Initial Operation

5.3.2 Monitoring Mode

(1) 1-phase (DPU1 series)

RUN
mode ※1. P : Press any key among , .
1 sec ※To return RUN mode, press the key at any parameter, or not to operate any keys
in 30 sec.
※1
P For ON/OFF input, or SSR pulse input, it displays 0 or 100.
Input value IN 10)0 • Setting range: Within 0.0 to 100.0%

P
Load voltage LD-V 22)0V Monitors measured voltage at load within the rated voltage range.

P
Load current LD-A 5)0A Monitors measured current at load within the rated current range.

P
Load power KW 1)00VA Monitors measured power at load within the rated power range.

Load P
resistance RES 50 Displays measured resistance at load for initial set resistance as percentage

Power P
frequency FREQ 6)00 Displays frequency of power

(2) 3-phase (DPU3 series)

RUN ※1. P : Press any key among , .
mode ※To return RUN mode, press the key at any parameter, or not to operate any keys
1 sec in 30 sec.
※1
P
Input value IN )0 V For ON/OFF input, or SSR pulse input, it displays 0 or 100.
• Setting range: Within 0.0 to 100.0%

Voltage between P
U-V line U-V )0 V

Voltage between P
V-W line V-W )0V Monitors measured voltage at load within the rated voltage range.

Voltage between P
W-U line W-U )0 A
P
U-phase
load current LA-U )0 A

V-phase load P
LA-V )0 A Monitors measured current at load within the rated current range.
current

W-phase P
load current LA-W )0VA
P
Load power KW )00 Monitors load power output at 3-phase.

P
Load resistance RES )0 Displays LLLL, 10 to 500%, HHHH.

P
Power frequency FREQ )00 Displays frequency of power within 45.0 to 65.0Hz range

26 © Copyright Reserved Autonics Co., Ltd.

 5. Installation and Initial Operation

5.3.3 Operation Mode [OP]

※1. P : Press any key among , .
※To return RUN mode, press the key at any parameter, or not to operate any keys in 30 sec.
RUN ※
mode : This parameter may or may not appear, depending on the other parameter settings.
3 sec

Operating
mode OP Displays operating mode.
※1
P Set soft start time.
Soft start time ST-T 50 • Setting range: 0 to 100 sec

Start limit S-LM Set limit output value.

• Setting range: 0 to 110%

Start limit time S-LT Set start limit time.

• Setting range: 0 to 100 sec
Output slope
manual A-GA Set output slope manual adjustment. ON OFF
adjustment
Set output change ratio by control input.
Output slope SLOP • Setting range: 0.00 to 1.00%
※Not displayed when output slope manual adjustment [ A-GA] is ON.
Base up B-UP Set base-up value.
• Setting range: 0 to 100%

Set slow-up time.

Slow up UP-T • Setting range: 0 to 999 sec
※Not displayed when C-MD mode is set as cycle control.

Set slow-down time.

Slow down DN-T • Setting range: 0 to 999 sec
※Not displayed when C-MD mode is set as cycle control.

Output low-limit Set output low-limit.

value
L-OL • Setting range: 0 to 110%

Output high-limit Set output high-limit.

value H-OL • Setting range: 0 to 110%

Set current limit value.

Current limit C-LM • Setting range: 0 to 110%

Setting point 1 SP1

Setting point 2 SP2 • Setting range: 0 to 100%

※Displayed only when DI-1 to DI-3 of ST-1 mode is set SP-M or SP1 to SP3.

Setting point 3 SP3

Setting point 4 SP4

Setting point 5 SP5 • Setting range: 0 to 100%

※Displayed only when DI-1 of ST-1 is set SP-M.

Setting point 6 SP6

Proportional Set proportional constant.

constant P • Setting range: 1 to 2000
※Displayed only for static voltage, static current, static power in phase control.
Integral Set integral constant.
constant I • Setting range: 0.1 to 999.9
※Displayed only for static voltage, static current, static power in phase control.

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 5. Installation and Initial Operation

5.3.4 Setting Mode 1 [ST-1]

※1. P : Press any key among , .
RUN ※If there is no operation any keys in 30sec, it returns to RUN mode.
mode
※Press the key when entering ST-1 setting mode in any parameters, it moves to ST-1.
3 sec
Press the key once more, it returns to RUN mode.
※When setting [ LOCK] as LOC2 or LOC3, and entering ST-1, it displays only [ LOCK] parameter.
Operating Mode Setting Mode 1 ※ : This parameter may or may not appear, depending on the other parameter settings.
OP ST-1 Displays setting mode 1.

Control input type ※1

P
IN-P 4-20 Select input type.

Control method Select control method.

C-MD ※Variable cycle control[ V-CY] is only for 1-phase model.
PA V-FB ㅉC-FB W-FB F-CY ㅉV-CY ONOF
DI-1 function
DI-1
Select digital input.
DI-2 function
※Multi SP function [ SP M] is available only in DI-1.
DI-2
SP M SP1 SP2 SP3 RST HOLD
DI-3 function
DI-3

Input correction
IN-B Set input correction value.
• Setting range: -99.9 to 99.9%

Input slope correction

SPAN Set input slope correction value.
• Setting range: -99.9 to 99.9%
1-phase:
Display value content
LD-V AMP KW REF
DISP Select display value content.
3-phase:
Bar content U-V V-W W-U LA-U
BAR Select bar graph display content.
REF KW LA-W LA-V
Load resistance
display method
DRES Select display method of load resistance value. DOWN UP

Full load auto recognition

F-LD Select full load auto recognition enable/disable. OFF ON

Com. address ※Displayed only for RS485 communication option model.

Set communication address.
ADDR • Setting range: 1 to 99

Com. speed
Select communication speed
BAUD (baud rate).
48 96 192 384

Com. write
Select communication write enable/disable.
COMW (ENA: Enables to write, DISA: Disables to write) ENA DISA

Lock
LOCK Select lock function. OFF LOC1 LOC2 LOC3

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 5. Installation and Initial Operation

5.3.5 Setting Mode 2 [ST-2]

RUN ※1. P : Press any key among , .

mode ※If there is no operation any keys in 30 sec, it returns to RUN mode.
※Press the key when entering ST-2 setting mode in any parameters, it moves to ST-2.
3 sec Press the key once more, it returns to RUN mode.
※When setting [ LOCK] as LOC2 or LOC3, and entering ST-2, it displays only [ LOCK] parameter.

Operating Mode Setting Mode 1 Setting Mode 2

OP ST-1 ST-2 Displays setting mode 2.

Overcurrent
alarm value ※1
P Set alarm value for overcurrent.
OC-V 120 • Setting range: 0 to 120%

Overcurrent
delay time
Set alarm delay time for overcurrent.
OC-T • Setting range: 0 to 100 sec

Overcurrent alarm CH
Select overcurrent channel.
OC-A
NON AL1 AL2

Overvoltage
alarm value Select alarm value for overvoltage.
OV-V • Setting range - 1-phase: 0 to 120%
- 3-phase: 0 to 300%
Overvoltage delay time
OV-T Set alarm delay time for overvoltage.
• Setting range: 0 to 100 sec

Overvoltage alarm CH
OV-A

Fuse break
alarm CH
FUSE
Select each alarm channel.
Heat sink overheating NON AL1 AL2
alarm CH
HEAT

Element error
alarm CH
SCR

Heater disconnect
alarm value
HB-V Set alarm value for heater disconnection.
• Setting range: 10 to 500%

Heater disconnect
alarm CH
HB-A Select heater disconnect alarm channel.
NON AL1 AL2
Heater disconnect
alarm delay time
HB-T Set heater disconnect alarm delay time.
※Heater disconnect alarm delay time [HB-T] is displayed in only 1-phase
model.
• Setting range: 0, 1, 2, 3, 5, 10, 20, 30 sec

© Copyright Reserved Autonics Co., Ltd. 29

5. Installation and Initial Operation

30 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6. Parameter Setting and Functions

6.1 Control input
(1) Input type
Type Parameter
4-20mA Input 4-20
Current impedance
0-20mA 100Ω 0-20
Analog input 1-5VDC 1-5
AUTO Voltage 0-5VDC Input
0-5
input impedance
0-10VDC 25Ω 0-10
ON/OFF Voltage pulse 0/12VDC
SSR
input No-voltage pulse ON/OFF -
Com. input RS485 - - COM
Internal adjuster 10kΩ - -
MANUAL input
External adjuster 3 to 10kΩ - -

(2) Input selection

In AUTO input, select it at control input type [IN-P] at setting mode1.
In MANUAL input, set output slope manual adjustment [A-GA] in operating mode as OFF and
select the input by the inner 3-level slide switch.
• Output slope manual adjustment [A-GA] setting as OFF: Select the input by the inner 3-level
slide switch.

Type Description
MAN
Adjust output slope with the internal adjuster
MAN INT
MAN
MAN
Adjust output slope with the external adjuster
EXT
AUTO No function

AUTO/MANUAL selection is available by no.7 and 11 terminals. ON setting is for AUTO input drive
and OFF setting is for MANUAL input drive. When AUTO/MANUAL terminal input is OFF, internal
AUTO/MANUAL selection switch is available only for setting MAN INT, and MAN EXT.

© Copyright Reserved Autonics Co., Ltd. 31

 6. Parameter Setting and Functions

6.2 Functions
6.2.1 Control method [C-MD]
Control method Control mode Parameter
Normal mode PA
Static voltage mode U-FB
Phase control
Static current mode C-FB
Static power mode Y-FB
Fixed cycle control F-CY
Cycle control Variable cycle control U-CY
ON/OFF control ONOF

(1) Normal mode [PA]

It is general output method to divide control angle proportionally according to control input signal
and to output it. The below figure is for output characteristics. It may cause lack power and
overpower based on the center of control input.

100

80
Output ratio (%)

60 Power curve

40 Voltage curve

20

0
4 8 12 16 20
Input signal (mA)

(2) Static voltage mode [U-FB]

At low temperature coefficient load(iron, chrome, nichrome, etc) of electrical resistance, it outputs
constant output which is proportion to control input not to change output voltage for power supply
variation, load resistance variation.
140 100 100
Nichrome
120
Chrominum 80
Volume resistance

75
Output ratio (%)

Input signal (%)

100

80 60
rate(µΩ·cm)

50
60
40
40
25
20 20

0 0 0
200 400 600 800 1000 1200 1400
0 20 40 60 80 100
Temperature(℃)
Output current (%)

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 6. Parameter Setting and Functions

(3) Static current mode [C-FB]

If temperature coefficient of load (platinum, molybdenum, tungsten, etc) changes 6 to 12 times
based on room temperature, it outputs constant current which is proportion to control input not to
change output voltage for power supply variation, load resistance variation.
Input signal(%)
0 25 50 75 100
140 100

120
80

Output voltage(%)
100
Volume resistance

Kanthal 60
80
Molybdenum
rate(µΩ·cm)

60 40
Tungsten
40
20
20

0 0
50 100 1500 2000 2500
0 20 40 60 80 100
Temperature(℃)
Output current(%)

(4) Static power mode [Y-FB]

It outputs constant power which is proportion to control input even though load variation and
power supply variation. It is proper control method for a heater which resistance value variation by
carbide(SIC) heating is big.
8 12 16 20mA
0.7 100

0.6
Output voltage(%)

80

Input signal(%)
0.5
Volume resistance

0.4 60

0.3 40
Deterioration
0.2
rate(Ω

20
0.1
0
0 0 20 40 60 80 100
500 1000 1500
Temperature(℃) Output current(%)

Output characteristics is proper 50% of the curve which connects the point (A) [output voltage
100% × output current 50%] and the point (B) [output voltage 50% × output current 100%].
The current output capacity of this unit should be over two times of load capacity.

© Copyright Reserved Autonics Co., Ltd. 33

6. Parameter Setting and Functions

(5) Fixed cycle control [F-CY]

During fixed cycle (60 cycles) of load power, it repeats ON/OFF cycle as constant ratio according
to control input signal and controls the power supplies on the load.
• Fixed cycle (60 cycles) control – When controlling output as 40%

24 Cycles ON 36 Cycles OFF

• Fixed cycle (60 cycles) control – When controlling output as 90%

54 Cycles ON 6 Cycles OFF

(6) Variable cycle control [U-CY]

Variable cycle control controls required power using min. cycles of AC sine wave according to
control input signal and optimize temperature changes of the subject.
• Variable cycle control – When controlling output as 30%

OFF ON OFF ON OFF ON OFF

(7) ON/OFF control method [ONOF]

The method when control input is OFF, output is OFF(0%), when it is ON, output is ON(100%).
(same as SSR)

Output

Control 100%
input

0%

34 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6.2.2 Soft start [ST-T]

When controlling the load which has inrush current (platinum, molybdenum, tungsten, infrared
lamp, etc) in power ON, or when control input changes rapidly, it prevents the load to increase
output gradually within the set time. Set the time for soft start.

When output applied to load is 100%,

Output(%)
When output applied to load is 50%,

Time

SOFT START set time

Regardless of control method setting (phase control or cycle control), it operates as phase control.
It operates when it is RUN mode from STOP status after supplying power or reset. (when it
reaches to the target output value, soft start function ends.)
When the target output is 0%, (control input 0%), soft start function does not operate.
• Setting range: 0 to 100 (unit: sec)

Soft start set time (t) is the time up to 100% increase of output applied to load. When the final
target output value is 50%, taken time to reach is t/2.
Reaching time to the final target output value = target output (%) × t
If soft start time is 25 sec, final target output is 80%,
reaching time to the final target output value is 0.8 × 25 = 20.

© Copyright Reserved Autonics Co., Ltd. 35

 6. Parameter Setting and Functions

6.2.3 Start limit [S-LM] and start limit time [S-LT]

When power is ON, changing to RUN status from STOP status, or alarm reset, set limit output
value and time to prevent the inrush current or error current.

SLOW UP set time

Output(%)

Start
limit

Time

SOFT START set time SLOW DOWN set time

Start limit set time

A: Soft start [ST-T] function ends

B: Slow up [UP-T] function ends
C: Slow down [DN-T] function ends
Regardless of control method setting (phase control or cycle control), it operates as phase control.
• Start limit [S-LM] setting range: 0 to 110 of output (unit: %)
• Start limit time [S-LT] setting range: 0 to 100 (unit: sec)

6.2.4 Output slope setting [SLOP]

This function is to set output changed ratio by control input from 0.00 to 1.00 range.
Output value when setting slope is input(%) X slope value.

Output(%) Output slope

value(%)

Control input signal(%)

36 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6.2.5 Output slope manual adjustment [A-GA]

This function is to adjust manually (internal or external adjuster) output value ratio for control input.
When setting AUTO GAIN function as ON in AUTO operation, [SLOP] is not displayed. It displays
slope value by the internal or external adjuster input.

100% of internal or
external adjuster

Output(%) 50% of internal or

external adjuster

Control input signal(%)

• Output slope manual adjustment [A-GA] setting as ON

: Set output slope by the inner 3- level slide switch
Type Description
MAN
Adjust output slope with the internal adjuster
MAN INT
MAN
MAN
Adjust output slope with the external adjuster
EXT
AUTO No function

6.2.6 Base-up [B-UP]

This function is to add base-up set value to input signal.
It is available only when output low-limit value is 0%.
BASE-UP SV(%)

Output(%)

Control input signal(%)

It is limited by start limit value at initial start.

• Setting range: Base-up set value (%) < Output high-limit value
• Output value for Base-up setting: Input(%)×Slope value+Base-up set value

© Copyright Reserved Autonics Co., Ltd. 37

 6. Parameter Setting and Functions

6.2.7 Slow up/Slow down [UP-T/DN-T]

It is same purpose as soft start function.
Soft start starts only one time at first but slow up/slow down function start during operation.
Regardless of control method setting (phase control or cycle control), it operates as phase control.

SLOW UP set time

Output(%)

Time

SLOW DOWN set time

SOFT START set time

A: Soft start ends

B: Slow up ends
C: Slow down ends
When it reaches to the target output value, slow up/slow down functions end. When it sets as ‘0’,
slow up/slow down do not operate.
• Setting range: 0 to 999 (unit: sec)

6.2.8 Output high limit value [H-OL], Output low limit value [L-OL]
This function is to high/low limit output range to protect load.

Output high-limit: H-OL

Output(%)

Output low-limit: L-OL

Control input signal(%)

• Setting range: 0 to 110 (unit: %)

(Output low limit value < Output high limit value)

38 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6.2.9 Digital input (DI)

Below functions are available by terminal input.
Digital input has five terminals; AUTO/MANUAL terminal, RUN/STOP terminal, and DI-1 to 3
terminals. Select the function for each input terminal of DI-1 to 3.

(1) AUTO/MANUAL selection [terminal 7 and 11]

Select AUTO(close)/MANUAL(open) input by terminal input.
AUTO mode controls output according to control input as analog input (voltage, current) or ON/
OFF input (including SSR pulse input).
MANUAL mode controls according to control input as the internal adjuster adjustment or the
external adjuster adjustment.
When selecting AUTO (close), the front AUTO indicator turns ON or selecting MANUAL(open), the
front AUTO indicator turns OFF.

(2) Run/Stop switching digital input [terminal 6 and 11]

Select RUN(close)/STOP(open) operation status by terminal input.
RUN mode operates as the set contents by control input. STOP mode is standby status.
When selecting RUN(close), the front RUN indicator turns ON or selecting STOP(open), the front
RUN indicator turns OFF.

(3) Digital input(DI1 to DI3) settings [terminal 8, 9, 10 and 11(COM)]

Select the each function for each digital input.
When setting ON(close) to DI input, the front EVT indicator turns ON or setting OFF(open), the
front EVT indicator turns OFF.
Select Terminal 8 and 11
function ON (CLOSE)

Terminal 9 and 11 Executes

ON (CLOSE) selected
function
Terminal 10 and 11
ON (CLOSE)

• RESET [RST]
After selecting RESET function, turn digital input ON(close) and open, this unit resets and re-starts.
• HOLD [HOLD]
After selecting HOLD function and digital input is ON(close), output and display value of this unit
is hold. (it operates hold when digital input maintains ON(close) status.)

© Copyright Reserved Autonics Co., Ltd. 39

6. Parameter Setting and Functions

• Single SP [SP-1, SP-2, SP-3]

For single SP, set SP-1, SP-2, SP-3 to each digital input for output to reach to the relevant SP.
It is available to set individually and duplicated and it is relevant with setting point [SP1 to SP3].

DI-1 DI-2 DI-3 Operating mode SP value set parameter

SP1 (e.g.: 20%)

SP1 SP2 SP3 SP2 (e.g.: 40%)
SP3 (e.g.: 60%)

Output
(%)
A: DI-1 is ON
B: DI-2 is ON
C: DI-3 is ON

• Multi SP [SP-M]
It is available to set total 6 SPs and to control output depending on 3 digital inputs’ setting.
This function is selectable only in [DI-1]. When selecting [SP-M] at [DI-1], [DI-2, DI-3]
parameters are not displayed.
When selecting [SP-M] at [DI-1], 6 parameters to set SPs are displayed in operating mode.
( SP1, SP2, SP3, SP4, SP5, SP6)

DI-1 DI-2 DI-3 Operating mode SP value set parameter

A ○ X X SP1 (e.g.: 20%)
B X ○ X SP2 (e.g.: 40%)
C ○ ○ X SP3 (e.g.: 60%)
D X X ○ SP4 (e.g.: 80%)
E ○ X ○ SP5 (e.g.: 100%)
F X ○ ○ SP6 (e.g.: 0%)
G ○ ○ ○ -

: Close, X: Open

Output
(%)

※A, B, C, D, E, F
: Close/Open status of Digital Input

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 6. Parameter Setting and Functions

6.2.10 Proportional and integral constant set of feedback control

Proportional integral control: This is the combination of proportional control and integral control.
Proportional control operates soft control without overshoot and hunting for the set value.
Integral control modifies offset automatically to reach the set value stably.
The optimal values of proportional constant and integral constant are set as factory defaults.
When changing proportional constant and integral constant, it may cause response delay in
feedback control or overshoot or hunting.
Proportional constant set[P], integral constant set [I] parameters are displayed when control
mode is static voltage, static current, static power mode in phase control.

(1) Proportional constant set [P]

It compensates error from the target value proportionally.
If proportional constant value is small, response is fast and it may cause overshoot or hunting. If
proportional constant value is big, response is slow.
• Setting range: 0(0%) to 2000(100%)

(2) Integral constant set [ I]

It compensates cumulative error from the target value.
The set integral constant is the time when proportional value and integral value are equal.
If integral constant value is small, response is fast and it may cause overshoot or hunting.
If integral constant value is big, response is slow.
• Setting range: 0.1 to 999.9 (unit: sec)

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 6. Parameter Setting and Functions

6.2.11 Input correction[IN-B]

It compensates the offset between actual input value and measured input value.
• Setting range: -99.9 to 99.9 (unit: %)

Measured
input signal
(%)

Actual input signal (%) Actual input signal(%)

Input corrected signal(%)

Input type is 4 to 20mA,

When 4mA is applied and the input monitor value displays 0.5%, set IN-B as -0.5 and the input
monitor value displays as 0.0%.

6.2.12 Input slope correction [SPAN]

It compensates the slope of the measured 100% input for actual 100% input value.
• Setting range: -99.9 to 99.9 (unit: %)

Measured
input signal
(%)

Actual input signal (%) Actual input signal(%)

Input corrected signal(%)
Input type is 4 to 20mA.
When 20mA is applied and the input monitor value displays 99.5%, set SPAN as 0.5 and the input
monitor value is 100.0%.

6.2.13 Display value content [DISP], bar graph content [BAR]

You can select display value content for the display part and bar graph in RUN mode.
• Display range
- 1-phase: [LD-U], [AMP], [YK], [REF]
- 3-phase: [U-V], [V-W], [W-U], [LA-U], [LA-V], [LA-W], [YK], [REF]

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 6. Parameter Setting and Functions

6.2.14 Load resistance display method [DRES]

This function is for display load resistance [RES] into a percentage in monitoring mode when
disconnecting the parallel load. You can select this value as increase rate of load resistance [UP]
or as decrease rate of number of loads [DOWN].

Decrease rate of number of loads [DOWN] displays correct decrease rate only when the connected
each load resistance is same.

R1 to R10 = 10Ω of each and load resistance (R) =1Ω

When disconnecting R1 to R5,

R R1 R2 R9 R10

① Increase rate of load resistance [UP]

It is based on 100% of load resistance(R), 1Ω . When disconnected R1 to R5, load resistance is
2Ω and load resistance [RES] in monitoring mode displays 200%.
② Decrease rate of number of loads [DOWN]
It is based on 100% of 10 loads (R1 to R10). When disconnected R1 to R5, the number of load
are 5(R6 to R10) and load resistance [RES] in monitoring mode displays 50%.

© Copyright Reserved Autonics Co., Ltd. 43

 6. Parameter Setting and Functions

6.2.15 Full load auto recognition [F-LD]

When operating load recognition function, it outputs 100% for 3 sec. Do not use this unit to the
device which has problem 100% output of load.
Set F-LD as ON in Setting Mode 1 [ST-1] group and press the key, load auto recognition
function operates. According to secular changes of the load, execute this function regularly.

Be sure that when auto recognition starts, it operates 100% output for 3 sec.

Do not execute this function as ON without profession’s consultations. When executing this
function, voltage, current outputs fully. Be sure that it may cause damage to the load.
When using special load using low voltage and high current such as (super)tantalum, SiC,
molybdenum, tungsten, etc, it may cause heater disconnect alarm [H-BK].
This alarm does not have problem in operation but it occurs when it does not detect the load
when using as low voltage. Set the below notes to clear the alarm.

When using special load such as (super) tantalum, SiC, molybdenum, tungsten, [H-BK] alarm
clear method:
• Set load resistance display method [DRES] as UP in Setting Mode 1 [ST-1].
• Set heater disconnect alarm value [HB-V] as 500 in Setting Mode 2 [ST-2].

6.2.16 Parameter lock [LOCK]

This function is to limit parameter set value check and change.
OFF LOC1 LOC2 LOC3
Operating Mode set group
Setting Mode 2 set group
Setting Mode 1 set group X X

: Enable to check and set, : Enable to check/Disable to set, X: Disable to check

44 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6.3 Alarm
Alarm Display Operation in alarm Alarm clear
Overcurrent alarm O-C Stops output
Overvoltage alarm O-V (SCR OFF) • Re-supply the power.
※1 • RESET ( key)
Fuse break alarm FUSE ※2
Heatsink overheat alarm • Switch to STOP mode
TEMP Stops output
※1
Element error alarm SCR (SCR OFF)
Automatically cleared within
Heater break alarm H-BK Continues operation
the setting range
※1: When it cannot return by re-supplying power because fuse is disconnected or element is
error, refer to ‘8. Maintenance’.
※2: For 1-phase model, output stops.
For 3-phase model, when 1-phase break, it maintains output and when 2-phase break,
it stops output.

6.3.1 Overcurrent alarm [OC-A]

When overcurrent alarm occurs, output stops and alarm maintains. [O-C] flashes for 0.5 sec in the
display part and the EVT indicator flashes for 0.5 sec.
When setting as [NON], alarm output does not occur but [O-C] flashes.
Alarm clears when re-supplying power, reset, or stop the unit.
(1) Overcurrent alarm value setting [OC-U]
Set overcurrent alarm value within 0.0 to 120.0% of rated current range.
(2) Overcurrent alarm delay time [OC-T]
Set overcurrent alarm delay time within 0 to 100 sec range. After the set time, over current alarm
occurs.

6.3.2 Current limit [C-LM]

This function limits current when using big inrush load to protect thyristor.
Especially for voltage feedback, current for load resistance value flows and it may over the rated
thyristor only voltage control. Therefore, it limits current to prevent over the rated current.
• Setting range: 0 to 110% (unit: %)

© Copyright Reserved Autonics Co., Ltd. 45

 6. Parameter Setting and Functions

6.3.3 Overvoltage alarm [OV-A]

When overvoltage alarm occurs, output stops and alarm maintains.
[O-V] flashes for 0.5 sec in the display part and the EVT indicator flashes for 0.5 sec.
Alarm clears when re-supplying power, reset, or stop the unit.
(1) Overvoltage alarm value setting [OV-V]
Set overvoltage alarm value within the range from 0 to 120% of the rated voltege for 1-phase
model, and from 0 to 300% of the rated voltage for 3-phase model.
(2) Overvoltage alarm delay time [OV-T]
Set overvoltage alarm delay time within 0 to 100 sec range. After the set time, overvoltage alarm
occurs.

6.3.4 Fuse disconnection alarm [FUSE]

For 1-phase model, when fuse disconnection alarm occurs, output stops.
For 3-phase model, when 1-phase break, it maintains output and when 2-phase break, it
stops output.
[FUSE] flashes for 0.5 sec in the display part and the EVT indicator flashes for 0.5 sec.
Alarm clears when re-supplying power, reset, or stop the unit.

6.3.5 Heatsink overheating alarm [HEAT]

When the temperature of a heat sink is over 75°C, heat sink overheating alarm occurs. [TEMP]
flashes for 0.5 sec in the display part and AL1 or AL2 indicator turn ON. When heatsink
overheating alarm occurs, output stops and alarm maintains. Alarm clears when re-supplying
power, reset, or stop the unit after cooling a heatsink.

6.3.6 Element error alarm [SCR]

Even though output is 0% and 10% of rated current or over current flows for over 3 sec (or over 5
cycle) continuously, element error alarm occurs.
When element error alarm occurs, output stops and alarm maintains. [SCR] flashes for 0.5 sec in
the display part and the EVT indicator flashes for 0.5 sec.
Alarm clears when re-supplying power, reset, or stop the unit.

46 © Copyright Reserved Autonics Co., Ltd.

 6. Parameter Setting and Functions

6.3.7 Heater disconnection alarm [HB-A]

When load resistance display method is set as [UP], it is over the set value, this alarm occurs.
[H-BK] and display value flashes for 2 sec in turn in the display part and EVT indicator flashes for
0.5 sec.
Even though heater disconnect alarm occurs, control operation continues.
It is cleared automatically when the value is below the SV of heater disconnect alarm value.

(1) Heater disconnection alarm value setting [HB-V]

Regardless of control method (phase control, cycle control), it operates. For the operation, over
10% of control output (phase control, cycle control) and over 30% of rated current are required.
• Setting range: 10 to 500 (unit: %)
Hysteresis of heater disconnect alarm is fixed as 1% for ON/OFF interval.

When SV for heater disconnect alarm is 50%, alarm turns ON at 50%, alarm turns OFF at 49%.

ON

OFF

49% SV 50%

(2) Heater disconnection alarm delay time [HB-T]

When load resistance display method is set as [DOWN] and load resistance value is under the SV
of [HB-V], alarm disconnection alarm occurs after the set delay time.
This can be set only in 1-phase model.
• Setting range: 0, 1, 2, 3, 5, 10, 20, 30 (unit: sec)

© Copyright Reserved Autonics Co., Ltd. 47

6. Parameter Setting and Functions

48 © Copyright Reserved Autonics Co., Ltd.

 7. Factory Default

7. Factory Default
(1) Operation mode
Parameter Default Parameter Default

ST-T 0000 C-LM 11)0

S-LM 11)0 SP1 00)0

S-LT 0000 SP2 00)0

A-GA OFF SP3 00)0

SLOP !000 SP4 00)0

B-UP 00)0 SP5 00)0

UP-T 0003 SP6 00)0

DN-T 0003 P 0150

L-OL 00)0 I 02)0

H-OL 11)0

(2) Setting mode 1

Parameter Default Parameter Default
IN-P 4-20 1-phase V
BAR
C-MD PA 3-phase U-V
DI-1 SP-M DRES DOWN
DI-2 SP1 F-LD OFF
DI-3 SP1 ADDR 0001
IN-B 00)0 BAUD 384
SPAN 00)0 COMW ENA
1-phase LD-V LOCK OFF
DISP
3-phase U-V

(3) Setting mode 2

Parameter Default Parameter Default

OC-V 11)0 FUSE AL1

OC-T 0005 HEAT AL1

OC-A AL1 SCR AL1

OV-V 11)0 HB-V 01)0

OV-T 0005 HB-A AL2

OV-A AL1 HB-T 30

© Copyright Reserved Autonics Co., Ltd. 49

7. Factory Default

50 © Copyright Reserved Autonics Co., Ltd.

 8. Maintenance

8. Maintenance
8.1 Fuse
To prevent accident, replace a fuse every two years.
Turn OFF the power and remove the power to remove the fuse which is in the product.

8.1.1 1-phase (DPU1 series)

Fuse position by each model

Fuse

Fuse

A type B type

Fuse
Fuse

C type D type

● Use the designated Fuse.

● After changing the fuse, you must check the fuse is installed correctly.

© Copyright Reserved Autonics Co., Ltd. 51

 8. Maintenance

8.1.2 3-phase (DPU3 series)

Fuse position by each model

Fuse
Fuse

A type B, C, D type

● Use the designated Fuse.

● After changing the fuse, you must check the fuse is installed correctly.

8.2 Thyristor (SCR)

There is one output SCR element in 1-phase model (DPU1 Series), and three output SCR
elements in 3-phase model (DPU3 Series).
It is normal status when the resistance between K and G is 10 to 100Ω during checking SCR
elements.
Refer to the below circuit diagram for accurate maintenance.
Assemble this unit as below circuit diagram. (Load indicator turns OFF)
When shorting TEST 1 at gate momentarily, open it to turn ON the load indicator.
When the load indicator does not turn ON, SCR elements are bad conditions.

LOAD

A
9V

G TEST 1
B

52 © Copyright Reserved Autonics Co., Ltd.

 9. Modbus Mapping Table

9. Modbus Mapping Table

9.1 Function code 3 (0×03) = Read holding resisters
(1) Request
Master to Slave
0×01 0×03 0×00 0×00 0×00 0×16 ×× ××
Com- Start address Number of data CRC 16
Add.
mand High Low High Low High Low

(2) Response
Slave to Master
0×01 0×03 0×10 0×03 0×E8 ... 0×03 0×E8 ×× ××
Response Number of 1st data ... 16th data CRC 16
Add.
command data High Low ... High Low High Low

(3) Error
Slave to Master
0×01 0×83 ×× ×× ××
Response Exception
Address CRC 16
command code

※Exception code
0×01: Not supported command code.
0×02: Starting address of required data and transmittable address are different.
0×03: The number of required data is over than the number of transmittable data.
0×04: Transmittable data does not process properly.

9.2 Function code 4 (0×04) = Read input resisters

(1) Request Master to Slave
0×01 0×04 0×00 0×00 0×00 0×10 ×× ××
Start address Number of data CRC 16
Address Command
High Low High Low High Low

(2) Response
Slave to Master
0×01 0×04 0×10 0×03 0×E8 ... 0×03 0×E8 ×× ××
Response Number 1st data ... 16th data CRC 16
Address
command of data High Low ... High Low High Low

(3) Error
Slave to Master
0×01 0×84 ×× ×× ××
Response Exception
Address CRC 16
command code
※Exception code
0×01: Not supported command code.
0×02: Starting address of required data and transmittable address are different.
0×03: The number of required data is over than the number of transmittable data.
0×04: Transmittable data does not process properly.

© Copyright Reserved Autonics Co., Ltd. 53

 9. Modbus Mapping Table

9.3 Function code 6 (0×06) = Write single resisters

(1) Request
Master to Slave
0×01 0×06 0×00 0×00 0×03 0×E8 ×× ××
Station Data CRC 16
Address Command
High Low High Low High Low

(2) Response
Slave to Master
0×01 0×06 0×00 0×00 0×03 0×E8 ×× ××
Station Data CRC 16
Address Command
High Low High Low High Low

(3) Error
Slave to Master
0×01 0×86 ×× ×× ××
Response Exception
Address CRC 16
command code
※Exception code
0×01: Not supported command code.
0×02: Starting address of required data and transmittable address are different.
0×03: The number of required data is over than the number of transmittable data.
0×04: Transmittable data does not process properly.

9.4 Function code 16 (0×10) = Write multiple resisters

(1) Request
Master to Slave
0×01 0×10 0×00 0×00 0×00 0×10 0×20 ×× ××
Number of
Start address Number of data CRC 16
Address Command byte
High Low High Low High Low

(2) Response
Slave to Master
0×01 0×10 0×00 0×00 0×03 0×E8 ×× ××
Station Data CRC 16
Address Command
High Low High Low High Low

(3) Error
Slave to Master
0×01 0×90 ×× ×× ××
Response Exception
Address CRC 16
Command code
※Exception code
0×01: Not supported command code.
0×02: Starting address of required data and transmittable address are different.
0×03: The number of required data is over than the number of transmittable data.
0×04: Transmittable data does not process properly.

54 © Copyright Reserved Autonics Co., Ltd.

 9. Modbus Mapping Table

9.5 Address mapping table

9.5.1 Input resisters
(1) 1-phase (DPU1 series)

No.(address) Item Factor

300001(0000) Output voltage *0.1
300002(0001) Load current *0.1
300003(0002) Power *0.1
300004(0003) Load resistance *0.1
300005(0004) Power frequency *0.01
300101(0064) Product number H 00
300102(0065) Product number L 00
300103(0066) Hardware version 10
300104(0067) Software version 10
300105(0068) Model name 1 "DP"
300106(0069) Model name 2 "2-"
300107(006A) Model name 3 "00"
300108(006B) Model name 4 " "
300109(006C) Model name 5 " "
300110(006D) Model name 6 " "
300111(006E) Model name 7 " "
300112(006F) Model name 8 " "
300113(0070) Model name 9 " "
300114(0071) Model name 10 " "
300115(0072) Reserved Reserved
300116(0073) Reserved Reserved
300117(0074) Reserved Reserved
300118(0075) Coil start address 0
300119(0076) Coil quantity 0
300120(0077) Input start address 0
300121(0078) Input quantity 0
300122(0079) Holding reg start address 0
300123(007A) Holding reg quantity 32
300124(007B) Input reg start address 0
300125(007C) Input reg quantity 5

© Copyright Reserved Autonics Co., Ltd. 55

9. Modbus Mapping Table

(2) 3-phase (DPU3 series)

Address Item Factor

300001(0000) Load voltage between U-V line (Vrms) *0.1
300002(0001) Load voltage between V-W line (Vrms) *0.1
300003(0002) Load voltage between W-U line (Vrms) *0.1
300004(0003) Load current of U-phase (Arms) *0.1
300005(0004) Load current of V-phase (Arms) *0.1
300006(0005) Load current of W-phase (Arms) *0.1
300007(0006) Power *0.01
300008(0007) Load resistance (% display for initial load) *0.1
300009(0008) Power frequency *0.01
300101(0064) Product number H 00
300102(0065) Product number L 00
300103(0066) Hardware version 10
300104(0067) Software version 10
300105(0068) Model name 1 "DP"
300106(0069) Model name 2 "2-"
300107(006A) Model name 3 "00"
300108(006B) Model name 4 " "
300109(006C) Model name 5 " "
300110(006D) Model name 6 " "
300111(006E) Model name 7 " "
300112(006F) Model name 8 " "
300113(0070) Model name 9 " "
300114(0071) Model name " "
300115(0072) Reserved Reserved
300116(0073) Reserved Reserved
300117(0074) Reserved Reserved
300118(0075) Coil start address 0
300119(0076) Coil quantity 0
300120(0077) Input start address 0
300121(0078) Input quantity 0
300122(0079) Holding reg start address 0
300123(007A) Holding reg quantity 32
300124(007B) Input reg start address 0
300125(007C) Input reg quantity 5

56 © Copyright Reserved Autonics Co., Ltd.

 9. Modbus Mapping Table

9.5.2 Holding resisters

(1) 1-phase (DPU1 series)
Address Item Factor
400001(0000) Reference value *0.1(1 to 1000)
400002(0001) Start time 0 to 99
400003(0002) Start limit *0.1(1 to 1000)
400004(0003) Soft start time 0 to 99
400005(0004) Output high-limit *0.1(1 to 1000)
400006(0005) Output low-limit *0.1(1 to 1000)
400007(0006) Remote SP1 *0.1(1 to 1000)
400008(0007) Remote SP2 *0.1(1 to 1000)
400009(0008) Remote SP3 *0.1(1 to 1000)
400010(0009) Remote SP4 *0.1(1 to 1000)
400011(000A) Remote SP5 *0.1(1 to 1000)
400012(000B) Remote SP6 *0.1(1 to 1000)
400013(000C) Slow up time 0 to 99
400014(000D) Slow Stop time 0 to 99
400015(000E) Current limit *0.1(1 to 2000)
400016(000F) Over current value *0.1(1 to 1100)
400017(0010) Over current time 0 to 99
400018(0011) Over voltage value *0.1(1 to 1100)
400019(0012) Over voltage time 0 to 99
400020(0013) Load detector alarm value *0.1(1 to 2000)
400021(0014) Display selected contents 0 to 3
400022(0015) Bar graph's content 0 to 3
400023(0016) Control integer KP value 1 to 9999
400024(0017) Control integer KI value *0.1(1 to 999.9)
400025(0018) Control method 0 to 6
400026(0019) Digital input 1 0 to 4
400027(001A) Digital input 2 0 to 4
400028(001B) Digital input 3 0 to 4
400029(001C) Auto ref input selector 0 to 3
400030(001D) Load resistance display method 0 to 1

© Copyright Reserved Autonics Co., Ltd. 57

9. Modbus Mapping Table

Address Item Factor

Bit0... Fault
Bit1... I-OC
Bit2... Over current
Bit3... Over volt
Bit4... Over temperature
Bit5... Fuse cut
Bit6... Phase loss
400031(001E) Operation
Bit7... Load open
Bit8... Over SCR
Bit9... Over Frequency
Bit10... Run/Stop
Bit11... Auto/Manual
Bit12... EMS Power
Bit13... Not Load
400032(001F) Output slope (%) *0.001(0 to 1.000)
400033(0020) Output (%) for input 0% *0.01(0 to 1000)
400034(0021) Input correction *0.1(-999 to 999)
400035(0022) Input slope correction *0.1(-999 to 999)
400036(0023) Overcurrent alarm output 0 to 2 (*1)
400038(0025) Overvoltage alarm output
400039(0026) Burn out fuse alarm
Heat sink temperature abnormal
400041(0028) 0 to 2
condition alarm
400042(0029) Element error alarm
400044(002B) Heater break alarm

58 © Copyright Reserved Autonics Co., Ltd.

 9. Modbus Mapping Table

(2) 3-phase (DPU3 series)

Address Item Factor

400001(0000) Reference value *0.1(1 to 1000)
400002(0001) Start time 0 to 99
400003(0002) Start limit *0.1(1 to 1000)
400004(0003) Soft start time 0 to 99
400005(0004) Output high-limit *0.1(1 to 1000)
400006(0005) Output low-limit *0.1(1 to 1000)
400007(0006) Remote SP1 *0.1(1 to 1000)
400008(0007) Remote SP2 *0.1(1 to 1000)
400009(0008) Remote SP3 *0.1(1 to 1000)
400010(0009) Remote SP4 *0.1(1 to 1000)
400011(000A) Remote SP5 *0.1(1 to 1000)
400012(000B) Remote SP6 *0.1(1 to 1000)
400013(000C) Slow up time 0 to 99
400014(000D) Slow Stop time 0 to 99
400015(000E) Current limit *0.1(1 to 2000)
400016(000F) Over current value *0.1(1 to 1100)
400017(0010) Over current time 0 to 99
400018(0011) Over voltage value *0.1(1 to 1100)
400019(0012) Over voltage time 0 to 99
400020(0013) Load detector alarm value *0.1(1 to 2000)
400021(0014) Display selected contents 0 to 3
400022(0015) Bar graph's content 0 to 3
400023(0016) Control integer KP value 1 to 9999
400024(0017) Control integer KI value *0.1(1 to 999.9)
400025(0018) Control method 0 to 6
400026(0019) Digital input 1 0 to 4
400027(001A) Digital input 2 0 to 4
400028(001B) Digital input 3 0 to 4
400029(001C) Auto ref input selector 0 to 3
400030(001D) Load resistance display method 0 to 1

© Copyright Reserved Autonics Co., Ltd. 59

9. Modbus Mapping Table

Address Item Factor

Bit0... Fault
Bit1... I-OC
Bit2... Over current
Bit3... Over volt
Bit4... Over temperature
Bit5... Fuse cut
400031(001E) Operation Bit6... Phase loss
Bit7... Load open
Bit8... Over SCR
Bit9... Over Frequency
Bit10... Run/Stop
Bit11... Auto/Manual
Bit12... EMS Power
400032(001F) Output slope (%) *0.001(0 to 1.000)
400033(0020) Output (%) for input 0% *0.01(0 to 1000)
400034(0021) Input correction *0.1(-999 to 999)
400035(0022) Input slope correction *0.1(-999 to 999)
400036(0023) Overcurrent alarm output 0 to 2 (*1)
400038(0025) Overvoltage alarm output
400039(0026) Burn out fuse alarm
Heat sink temperature abnormal
400041(0028) 0 to 2
condition alarm
400042(0029) Element error alarm
400044(002B) Heater break alarm

60 © Copyright Reserved Autonics Co., Ltd.

 9. Modbus Mapping Table

© Copyright Reserved Autonics Co., Ltd. 61

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some models may be discontinued without notice. DRW180019AA