/ Perfect Charging / Perfect Welding / Solar Energy

Operating Instructions
Fronius Primo 208-240 EN-US

3.8-1 / 5.0-1 / 6.0-1 Inverter for grid-connected photo-

voltaic systems
7.6-1 / 8.2-1 Instructions de service
FR

Onduleur pour installations photo-

voltaïques connectées au réseau
Manual de instrucciones
ES

Inversores para instalaciones foto-

voltaicas acopladas a la red

42,0410,2116 007-05122014
 USA FRONIUS Technical support contact information:
Mon. – Fri. 8:00 am – 7:00 pm CST (excluding holidays)
(219) 734-5500 or Toll Free 1-877-FRONIUS

0
Dear reader,

EN-US
Introduction Thank you for the trust you have placed in our company and congratulations on buying this
high-quality Fronius product. These instructions will help you familiarize yourself with the
product. Reading the instructions carefully will enable you to learn about the many different
features it has to offer. This will allow you to make full use of its advantages.

Please also note the safety rules to ensure greater safety when using the product. Careful
handling of the product will repay you with years of safe and reliable operation. These are
essential prerequisites for excellent results.

Explanation of
DANGER! Indicates an immediate danger. Death or serious injury may result if
Safety Instruc-
appropriate precautions are not taken.
tions

WARNING! Indicates a possibly dangerous situation. Death or serious injury may

result if appropriate precautions are not taken.

CAUTION! Indicates a situation where damage or injury could occur. Minor injury
or damage to property may result if appropriate precautions are not taken.

NOTE! Indicates the possibility of flawed results and damage to the equipment.

IMPORTANT! Indicates tips for correct operation and other particularly useful information.
It does not indicate a potentially damaging or dangerous situation.

If you see any of the symbols depicted in the "Safety Rules," special care is required.

1
2
Contents

EN-US
Safety rules ................................................................................................................................................ 5
General ...................................................................................................................................................... 8
Device concept ..................................................................................................................................... 8
Intended Use......................................................................................................................................... 9
Information on "Field Adjustable Trip Points" and "Advanced Grid Features" ..................................... 9
FCC / RSS Compliance ........................................................................................................................ 10
Insulation Monitoring............................................................................................................................. 10
Arc Detector / Interrupter ...................................................................................................................... 10
Warning Notices Affixed to the Device.................................................................................................. 11
Data Communication and Solar Net .......................................................................................................... 12
Fronius Solar Net and Data Interface ................................................................................................... 12
Installing Option Cards in Inverters....................................................................................................... 12
System monitoring ..................................................................................................................................... 13
General ................................................................................................................................................. 13
Starting for the First Time via the Fronius Solar.web App .................................................................... 13
More Information on Fronius Datamanager 2.0 .................................................................................... 15
Keys and symbols...................................................................................................................................... 16
Keys and Symbols ................................................................................................................................ 16
Display .................................................................................................................................................. 17
Menu level.................................................................................................................................................. 18
Activating Display Illumination .............................................................................................................. 18
Automatic Deactivation of Display Illumination / Switching to the "NOW" Display Mode...................... 18
Accessing the Menu Level .................................................................................................................... 18
Menu items NOW, LOG, and GRAPH ....................................................................................................... 19
NOW LOG GRAPH............................................................................................................................... 19
Values Displayed in the Menu Items NOW and LOG ........................................................................... 19
The SETUP menu item .............................................................................................................................. 21
Presetting.............................................................................................................................................. 21
SETUP .................................................................................................................................................. 21
Navigation in the SETUP Menu Item .................................................................................................... 21
General Setup Menu Item Settings....................................................................................................... 22
Application Example: Setting the Feed-In Tariff.................................................................................... 23
The Setup menu item................................................................................................................................. 24
Standby................................................................................................................................................. 24
WiFi Access Point ................................................................................................................................. 24
DATCOM .............................................................................................................................................. 25
USB....................................................................................................................................................... 25
Relay..................................................................................................................................................... 27
Time / Date .......................................................................................................................................... 28
Display Settings .................................................................................................................................... 28
Energy Yield.......................................................................................................................................... 30
Fan........................................................................................................................................................ 30
Arc Detection ........................................................................................................................................ 31
The INFO menu item ................................................................................................................................. 32
INFO ..................................................................................................................................................... 32
Measured values LT status Grid status ................................................................................................ 32
Device Information ................................................................................................................................ 33
Version.................................................................................................................................................. 34
Switching the key lock on and off............................................................................................................... 35
General ................................................................................................................................................. 35
Switching the Key Lock On and Off ...................................................................................................... 35
USB Stick as a Data Logger and for Updating Inverter Software .............................................................. 36
USB Stick as a Data Logger ................................................................................................................. 36
Suitable USB Sticks .............................................................................................................................. 36
USB Stick for Updating Inverter Software............................................................................................. 37
Removing the USB Stick....................................................................................................................... 37
The Basic menu ......................................................................................................................................... 38
General ................................................................................................................................................. 38
Accessing the Basic menu.................................................................................................................... 38
Items in the Basic Menu........................................................................................................................ 39

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 Status Diagnosis and Troubleshooting ...................................................................................................... 41
Displaying Status Codes....................................................................................................................... 41
Total Failure of the Display ................................................................................................................... 41
Class 1 Status Codes ........................................................................................................................... 41
Class 2 status codes............................................................................................................................. 41
Class 3 Status Codes ........................................................................................................................... 42
Class 4 Status Codes ........................................................................................................................... 43
Class 5 Status Codes ........................................................................................................................... 45
Class 7 Status Codes ........................................................................................................................... 46
Customer Service ................................................................................................................................. 47
Operation in dusty environments .......................................................................................................... 48
Technical Data ........................................................................................................................................... 49
Relevant standards and directives........................................................................................................ 52
Terms and conditions of warranty and disposal......................................................................................... 53
Fronius manufacturer's warranty .......................................................................................................... 53
Disclaimer ............................................................................................................................................. 53
Disposal ................................................................................................................................................ 53

4
Safety rules

EN-US
General
The device is manufactured using state-of-the-art technology and according
to recognized safety standards. If used incorrectly or misused, however, it can
cause
- injury or death to the operator or a third party
- damage to the device and other material assets belonging to the operat-
ing company
- inefficient operation of the equipment.
All persons involved in start-up operation, maintenance and servicing for the
device must
- be suitably qualified
- have knowledge of and experience in dealing with electrical installations
and
- have completely read and followed these operating instructions.
The operating instructions must always be at hand wherever the device is be-
ing used. In addition to the operating instructions, all applicable local rules and
regulations regarding accident prevention and environmental protection must
also be followed.
All safety and danger notices on the device
- must be kept in a legible state
- must not be damaged/marked
- must not be removed
- must not be covered, pasted or painted over.
Only operate the device when all protection devices are fully functional. If the
protection devices are not fully functional, there is a risk of
- injury or death to the operator or a third party
- damage to the device and other material assets belonging to the operat-
ing company
- inefficient operation of the device.
Safety equipment that is not fully functional must be repaired by an authorized
specialist before the device is turned on.
Never bypass or disable protection devices.
For the location of the safety and danger notices on the device, refer to the
section headed "General" in the operating instructions for the device.
Any equipment malfunctions which might impair safety must be remedied im-
mediately before the device is turned on.
Your personal safety is at stake!

Environmental
Operation or storage of the device outside the stipulated area will be deemed
Conditions
as "not in accordance with the intended purpose." The manufacturer is not re-
sponsible for any damages resulting from unintended use.
For exact information on permitted environmental conditions, please refer to
the "Technical data" in the operating instructions.

5
Qualified Service
The servicing information contained in these operating instructions is intended
Engineers
only for the use of qualified service engineers. An electric shock can be fatal.
Do not perform any actions other than those described in the documentation.
This also applies to those who may be qualified.
All cables and leads must be secured, undamaged, insulated and adequately
dimensioned. Loose connections, scorched, damaged or inadequately dimen-
sioned cables and leads must be immediately repaired by authorized person-
nel.
Maintenance and repair work must only be carried out by authorized person-
nel.
It is impossible to guarantee that externally procured parts are designed and
manufactured to meet the demands made on them, or that they satisfy safety
requirements. Use only original replacement parts (also applies to standard
parts).
Do not carry out any modifications, alterations, etc. without the manufacturer's
consent.
Components that are not in perfect condition must be changed immediately.

Data Regarding
The inverter generates a maximum sound power level of < 65 dB(A) (ref. 1
Noise Emission
pW) when operating under full load in accordance with IEC 62109-1:2010.
Values
The device is cooled as quietly as possible with the aid of an electronic tem-
perature control system, and depends on the amount of converted power, the
ambient temperature, the level of soiling of the device, etc.
It is not possible to provide a workplace-related emission value for this device,
because the actual sound pressure level is heavily influenced by the installa-
tion situation, the power quality, the surrounding walls and the properties of
the room in general.

EMC Measures
In certain cases, even though a device complies with the standard limit values
for emissions, it may affect the application area for which it was designed (e.g.,
when there is sensitive equipment at the same location, or if the site where the
device is installed is close to either radio or television receivers). If this is the
case, then the operator is obliged to take appropriate action to rectify the situ-
ation.

Safety symbols
Devices marked with the CSA test mark satisfy the requirements of the rele-
vant standards for Canada and the USA.

Disposal
Dispose of in accordance with the applicable national and local regulations.

6
 EN-US
Backup
The user is responsible for backing up any changes made to the factory set-
tings. The manufacturer accepts no liability for any deleted personal settings.

Copyright
Copyright of these operating instructions remains with the manufacturer.
Text and illustrations are technically correct at the time of going to print. The
right to make modifications is reserved. The contents of the operating instruc-
tions shall not provide the basis for any claims whatsoever on the part of the
purchaser. If you have any suggestions for improvement, or can point out any
mistakes that you have found in the operating instructions, we will be most
grateful for your comments.

7
General

Device concept Device construction:

(1) (2) (3)
(1) Housing cover
(2) Inverter
(3) Wall bracket
(4) Connection area incl. DC main
switch
(5) Data communication area
(6) Data communication cover

The inverter transforms the direct current

generated by the solar modules into alter-
nating AC current. This alternating current
is fed into your home system or into the pu-
(6) (5) (4) blic grid and synchronized with the voltage
that is used there.

The inverter has been designed exclusively for use in grid-connected photovoltaic sys-
tems. It cannot generate electric power independently of the grid.

The design and function of the inverter provide a maximum level of safety during both in-
stallation and operation.

The inverter automatically monitors the public grid. Whenever conditions in the electric grid
are inconsistent with standard conditions (for example, grid switch-off, interruption), the in-
verter will immediately stop operating and interrupt the supply of power into the grid.
Grid monitoring is carried out using voltage monitoring, frequency monitoring and monitor-
ing islanding conditions.

The inverter is fully automatic. Starting at sunrise, as soon as the solar modules generate
enough energy, the inverter starts monitoring grid voltage and frequency. As soon as there
is a sufficient level of irradiance, the solar inverter starts feeding energy into the grid.
The inverter ensures that the maximum possible power output is drawn from the solar mod-
ules at all times.
As there is no longer sufficient energy available to feed power into the grid, the inverter
shuts down the grid connection completely and stops operating. All settings and recorded
data are saved.

If the inverter temperature exceeds a certain value, the inverter derates automatically the
actual output power for self protection.
The cause for a to high inverter temperature can be found in a high ambient temperature
or an inadequate heat transfer away (eg for installation in control cabinets without proper
heat dissipation).

8
 EN-US
Intended Use The inverter is designed exclusively to be connected and used with nongrounded solar
modules. The solar modules cannot be grounded at either the positive or negative pole.

The solar inverter is designed exclusively to convert direct current from solar modules into
alternating current and feed this power into the public grid.
The following are deemed not to be in conformity with its intended purpose:
- utilization for any other purpose, or in any other manner
- alterations to the inverter that are not expressly recommended by Fronius
- installation of components that are not expressly recommended or sold by Fronius.

The manufacturer is not responsible for any damage resulting from improper use.
All warranty claims are considered void in such cases.

Proper use also means

- carefully reading and obeying all the instructions and safety and danger notices in the
operating instructions
- carrying out all the specified inspection and servicing work
- installation as per operating instructions.

When configuring the photovoltaic system, make sure that all photovoltaic system compo-
nents are operating completely within their permitted operating range.

All measures recommended by the solar module manufacturer for maintaining solar mod-
ule properties must be followed.

Utility company regulations regarding grid power feed must be followed.

Information on The inverter is equipped with field adjustable trip points and advanced grid features. For
"Field Adjustable further information, please contact Fronius technical support at the following e-mail ad-
Trip Points" and dress: pv-us-support@fronius.com.
"Advanced Grid
Features"

9
FCC / RSS Com-
FCC
pliance
This device corresponds to the limit values for a digital device of class B in
accordance with Part 15 of the FCC regulations. The limit values should pro-
vide adequate protection against harmful interference in homes. This device
creates and uses high frequency energy and can interfere with radio com-
munications when not used in accordance with the instructions. However,
there is no guarantee against interference occurring in a particular installa-
tion.
If this device interferes with radio or television reception when turning the de-
vice on and off, it is recommended that the user solve this with one or more
of the following measures:
- adjust or reposition the receiving antenna
- increase the distance between the device and the receiver
- connect the device to another circuit, which does not include the receiv-
er
- for further support, please contact the retailer or an experienced radio/
TV technician.

Industry Canada RSS

The device corresponds to the license-free Industry Canada RSS stan-

dards. Operation is subject to the following conditions:
(1) The device may not cause harmful interference
(2) The device must accept any interference received, including interfer-
ence that may cause undesired operation.

Insulation Moni- The inverter is fitted with the following safety function as required by UL 1741 and the Na-
toring tional Electrical Code:

Insulation monitoring
In photovoltaic systems with ungrounded solar modules, the inverter checks the resistance
between the photovoltaic system's positive or negative pole and the ground potential. In
the case of a short circuit between the DC+ or DC- cable and the ground (e.g., due to poorly
insulated DC cables or faulty solar modules) the inverter disconnects from the grid.

Arc Detector / In- The inverter has an integrated arc detector / interrupter, which detects and deletes serial
terrupter arcs.

A serial arc may occur after the following example errors or situations:
- poorly connected DC plug
- defective solar module connection sockets
- high resistance solder connections between the cells of a solar module
- incorrect cable connected to the input terminal of an inverter
- defective DC cables that allow a connection to the ground.

If an arc is detected, the power is shut down and the grid power feed operation is interrupt-
ed. A status code appears on the display.
The status code on the display must be reset manually before the grid power feed opera-
tion can be resumed.

The power shut down also deletes the serial arc.

10
 NOTE! Power optimizers for solar modules or data transfer via DC cables (PLC
– Power Line Communication) in the PV system can compromise the correct

EN-US
function of the arc detector / interrupter.
When using such components, it is the responsibility of the system installer to en-
sure that the arc detector / interrupter functions correctly. Contact Fronius Tech-
nical Support for further information.

Warning Notices The inverter contains and displays warning notices and safety symbols. These warning no-
Affixed to the De- tices and safety symbols must NOT be removed or painted over. The notices and symbols
vice warn against operating the equipment incorrectly, as this may result in serious injury and
damage.

Safety Symbols:
Danger of serious injury or dam-
age due to incorrect operation
Do not use the functions de-
scribed until you have thoroughly
5
read and understood the following
documents:
- these operating instructions
- all operating instructions for
system components of the
photovoltaic system, espe-
cially the safety rules
5

Dangerous electrical voltages

You must wait until the capacitors

have discharged

Text of Warning Notices:

WARNING!
Danger of electric shock
Non-Isolated Inverter

Do not remove cover. No user serviceable parts inside. Refer servicing to qualified service
personnel.
Both AC and DC voltage sources are terminated inside this equipment. Each circuit must
be individually disconnected before servicing.
When the photovoltaic array is exposed to light, it supplies DC voltage to this equipment.
Risk of electric shock from energy stored in capacitor. After disconnecting all sources of
supply, wait 5 minutes before removing cover.
The DC conductors of this photovoltaic system are normally ungrounded but will become
intermittently grounded without indication when the inverter measures the PV array isola-
tion.
Ungrounded System: The DC lines of this PV system are not grounded and may be en-
ergized.

11
Data Communication and Solar Net

Fronius Solar Net

Fronius developed Solar Net to make these system add-ons flexible and capable of being
and Data Inter-
used in a wide variety of different applications. Fronius Solar Net is a data network that
face
enables several inverters to be linked to the system add-ons.
Fronius Solar Net is a bus system with ring topology. Just one suitable cable is enough
to provide communication between one or more inverter connected to Fronius Solar Net
and a system add-on.
Different system add-ons are automatically recognized by Fronius Solar Net.
In order to distinguish between several identical system add-ons, each one must be as-
signed a unique number.
In order to clearly define each inverter in Fronius Solar Net, each inverter must also be
assigned an individual number.
You can assign individual numbers as per the "SETUP Menu" section in this manual.
More detailed information on individual system upgrades can be found in the relevant op-
erating instructions or on the internet at http://www.fronius.com
More detailed information on cabling DATCOM components can be found at

 http://www.fronius.com/QR-link/4204101938

Installing Option Information on installing option cards in the inverters and for connecting data communica-
Cards in Inverters tion cables can be found in the installation instructions.

12
System monitoring

EN-US
General If no device special version is present, the inverter is equipped with Wi-Fi enabled system
monitoring Fronius Data Manager 2.0.
The monitoring system includes inter alia the following functions:
- own website with display of actual data and a wide variety of settings
- direct connection-possibility to Fronius Solar.web
- automatic sending of service messages via SMS or e-mail in case of errors
- Internet connection via WiFi or LAN
- Possibility to control the inverter by setting of power limits, minimum or maximum op-
erational times or target operational times
- Controlling the inverter via Modbus (tcp / rtu)
- Allocation of control priorities
- Controlling the inverter by connected meters (Fronius Smart Meter or S0 meter)
- Controlling the inverter via a ripple control signal receiver (eg reactive power setting
or power setting)
- dynamic power reduction considering the own consumption

Further information about the Fronius Data Manager 2.0 can be found online in the Fronius
Data Manager 2.0 operating instructions.

Starting for the NOTE! The Fronius Solar.web App makes starting Fronius Datamanager 2.0 for
First Time via the the first time significantly easier.
Fronius So- The Fronius Solar.web App is available in the relevant app store.
lar.web App

To start Fronius Datamanager 2.0 for the first time,

- the Fronius Datamanager 2.0 plug-in card must be installed in the inverter,
or
- there must be a Fronius Datamanager Box 2.0 in the Fronius Solar Net ring.

IMPORTANT! To establish a connection to Fronius Datamanager 2.0, the end device in

question (e.g., laptop, tablet) must be configured as follows:
- "Obtain an IP address automatically (DHCP)" must be activated

WARNING! An electric shock can be fatal. Danger from grid voltage and DC volt-
age from solar modules.
Before opening the inverter:
- You must wait until the capacitors have discharged.
- Follow the operating instructions when opening the inverter.
- Observe the safety rules and safety instructions contained in the inverter's
operating instructions.

1 Connect the inverters with Fronius Datamanager 2.0 or Fronius Datamanager Box 2.0
in Fronius Solar Net

IMPORTANT! Inverters Fronius IG, Fronius IG Plus, Fronius IG Plus V, Fronius IG

Plus A, Fronius CL, Fronius CL USA, and Fronius IG 300–500 must always be located
at the beginning or end of the Fronius Solar Net ring.

13
 2 For Fronius Galvo/Fronius Symo/Fronius Primo only and when linking multiple invert-
ers in Fronius Solar Net:
Set the Fronius Solar Net master/slave switch on the Fronius Datamanager 2.0 plug-
in card as required
- One inverter with Fronius Datamanager 2.0 = master
- All other inverters with Fronius Datamanager 2.0 = slave (the LEDs on the Fro-
nius Datamanager 2.0 plug-in cards are off)

3 Switch the device to service mode

Inverter with Fronius Datamanager 2.0 plug-in card:

- Switch the IP switch on the Fronius Datamanager 2.0 plug-in card to position A

or
- Activate the WIFI Access Point via the Setup menu of the inverter
(the performance of this function depends on the inverter software)

Stand by
WiFi Access Point
DATCOM
USB
Clock

Fronius Datamanager Box 2.0:

- Switch the IP switch on the Fronius Datamanager Box 2.0 to position A

The inverter/Fronius Datamanager Box 2.0 establishes the WLAN Access Point. The
WLAN Access Point stays open for one hour.

4 Download Fronius Solar.web App

5 Run Fronius Solar.web App

14
 The start page of the Commissioning Wizard appears.

EN-US
The Technician Wizard is designed for the installer and includes standard-specific settings.
Running the Technician Wizard is optional.
If the Technician Wizard is run, it is essential to note down the assigned service password.
This service password is required to configure the UC Editor and Counter menu items.
If the Technician Wizard is not run, no specifications for power reduction are set.

The Solar Web Wizard must be run.

6 If necessary, run the Technician Wizard and follow the instructions

7 Run the Solar Web Wizard and follow the instructions

The Fronius Solar.web start page appears.

or
The Fronius Datamanager 2.0 website opens.

More Information
Detailed information on Fronius Datamanager 2.0 can be found at:
on Fronius Data-
manager 2.0

 http://www.fronius.com/QR-link/4204260191EA

15
Keys and symbols

Keys and Sym-

bols
(1)

(2)
(3)
(4)

(5) (6) (7) (8)

Item Description
(1) Display
for displaying values, settings, and menus

Control and Status LEDs

(2) General Status LED (red)

indicates
- when a status code is shown on the display
- interruption of grid power feed operation
- during troubleshooting (the inverter is waiting to be reset or for an error to
be corrected).
(3) Startup LED (orange)
indicates
- if the inverter will enter the automatic startup or self test phase (as soon as
the solar modules yield sufficient power output after sunrise)
- if the inverter has been set to standby operation in the Setup menu (= man-
ual shutoff of operation)
- when the inverter software is being updated.
(4) Operating Status LED (green)
indicates
- if the photovoltaic system is working fault-free following the automatic start-
up phase of the inverter
- when the grid power feed operation is taking place.

Function keys – each has a different function depending on the selection:

(5) "Left/Up" key

for navigating left and up
(6) "Down/Right" key
for navigating down and right
(7) "Menu/Esc" key
for switching to the menu level
to exit the Setup menu
(8) "Enter" key
for confirming a selection

16
 The keys are capacitive keys; if they become wet their function may be compromised.
Wipe the keys dry with a cloth if necessary to ensure optimal function.

EN-US
Display Power for the display comes from the AC grid voltage. The display can be available all day
long depending on the setting in the Setup menu.

IMPORTANT! The inverter display is not a calibrated measuring instrument. Slight devia-
tion from the utility company meter is intrinsic to the system. A calibrated meter is required
to make calculations for the utility company.

Menu item

Parameter declaration

Display of values, units and status codes

Function key functions

Display area, display mode

Energy-Manager (**)
Inv. no. | Save symbol | USB conn.(***)
1 Menu item
Standby
Previous menu items
WiFi Access Point
DATCOM Currently selected menu item
USB Next menu items
Relay
(*) Function key functions
Display area, setup mode

(*) Scroll bars

(**) The Energy Manager symbol
is displayed if the Energy Manager function has been activated
(***) WR no. = Inverter DATCOM number,
Store icon – appears briefly when set values are stored,
USB connection – appears if a USB stick has been inserted

17
Menu level

Activating Dis- 1 Press any key.

play Illumination
The display illumination is activated.

The SETUP menu item offers the choice between a permanently lit or permanently
dark display under "Display Settings."

Automatic Deacti- If no key is pressed for 2 minutes:

vation of Display - the display illumination turns off automatically and the inverter switches to the "NOW"
Illumination / display mode (if the display illumination is set to automatic)
Switching to the - the inverter can be switched to the "NOW" display mode from any menu level, except
"NOW" Display for the "Standby" menu item
Mode - the current output power is displayed.

Accessing the
1 Press the "Menu" key
Menu Level

The display switches to the menu level

2 Select the desired menu item using

the "Left" or "Right" key
3 Access the desired menu item by
pressing the "Enter" key

18
Menu items NOW, LOG, and GRAPH

EN-US
NOW
NOW
LOG
(displays real-time values)
GRAPH

LOG
GRAPH
(data logged on the current day, from the
current calendar year, and since using the
inverter for the first time)

GRAPH
GRAPH
graphically represents the course of the
output power during the day. The time
axis is automatically scaled

Press the "Back" key to close the display

Values Displayed Data displayed in menu item NOW:

in the Menu Items
NOW and LOG
Output power (W)
Grid voltage (V)
Output current (A)
Grid frequency (Hz)
Solar voltage (V)
Solar current (A)
Time
Time on the inverter or Fronius Solar Net ring
Date
Date on the inverter or Fronius Solar Net ring

19
 Data displayed in menu item LOG:
(for the current day, the current calendar year, and since using the inverter for the first
time)

Output energy (kWh / MWh)

energy fed into the grid during the monitored period

Due to the variety of different monitoring systems, there can be deviations between the
readings of other metering instruments and the readings from the inverter. For determin-
ing the energy supplied to the grid, only the readings of the calibrated meter supplied by
the electric utility company are relevant.
Maximum output power (W)
highest power feeding in during the monitored period
Yield
amount of money earned during the monitored period (currency can be selected in the
Setup menu)

As was the case for the output energy, readings may differ from those of other instru-
ments.

"The Setup Menu" section describes how to set the currency and rate for the energy sup-
plied.
The factory setting depends on the respective country-specific setup.
Maximum grid voltage (V)
highest reading of grid voltage during monitored period
Maximum solar voltage (V)
highest reading of solar module voltage during monitored period
Operating hours
indicates how long the inverter has been operating (HH:MM)

IMPORTANT! The time must be set correctly for day and year values to be displayed
properly.

20
The SETUP menu item

EN-US
Presetting Following commissioning, the inverter is preconfigured according to the country setup.

The SETUP menu item enables you to easily customize the inverter’s preset parameters
to your needs.

SETUP
SETUP
GRAPH
(Setup menu)

NOTE! Because of software updates, certain functions may be available for your
device but not described in these operating instructions or vice versa. In addition,
individual figures may also differ slightly from the operating elements of your de-
vice. However, the function of these operating elements is identical.

Navigation in the Accessing the SETUP menu item

SETUP Menu Item

1 Select the "Setup" menu item at

GRAPH
menu level using the "Left" or "Right"
key
2 Press the "Enter" key

"SETUP" menu level selected

The first SETUP menu item is displayed:

"Standby"
Standby
WiFi Access Point
DATCOM
USB
Relay

"Standby" item

Scrolling through the items

3 Scroll through the available menu

items using the "Up" and "Down" keys

Example: "WiFi Access Point" menu item

21
 Exiting a menu item

4 To exit a menu item, press the "Back"

GRAPH
key

The menu level is displayed

If no key is pressed for 2 minutes

- the inverter switches to the "NOW" menu item from anywhere within the menu level
(exception: Setup menu item "Standby")
- the display illumination turns off
- the current power of feeding in is displayed.

General Setup 1 Accessing the SETUP menu item

Menu Item Set- Use the "Up" and "Down" keys to select the desired menu item
2
tings

3 Press the "Enter" key

The first digit of a value to be set flash- The available settings are displayed:
es:

4 Use the "Up" and "Down" keys to se- 4 Use the "Up" and "Down" keys to se-
lect a value for the first digit lect the desired setting.

5 Press the "Enter" key 5 Press the "Enter" key to save and ap-
ply the selection.

The second digit of the value flashes.

Repeat steps 4 and 5 until... Press the "Esc" key to discard the se-
6
lection.
the entire value flashes.
7 Press the "Enter" key

8 Repeat steps 4–6 for units or other

values to be set until the unit or value
to be set flashes.
9 Press the "Enter" key to save and ap-
ply the changes.

Press the "Esc" key to discard the

changes.

The currently selected item is displayed. The currently selected item is displayed.

22
 EN-US
Application Ex-
1 Select the Setup menu item "Energy
ample: Setting
yield"
the Feed-In Tariff
2 Press the "Enter" key

The overview of values that can be select-

ed is displayed.

3 Use the "Up" or "Down" keys to select

"Energy yield"
4 Press the "Enter" key

The feed-in tariff is displayed.

The tens digit flashes.

5 Use the "Up" and "Down" keys to se-

lect a value for the tens digit.
6 Press the "Enter" key

The units digit flashes.

7 Repeat steps 5 and 6 for the units dig-

it and for the three digits after the dec-
imal point until ...

the set feed-in tariff flashes.

8 Press the "Enter" key

The feed-in tariff is applied; the overview

of the values that can be set is displayed.

9 Press the "Esc" key

The Setup menu item "Energy yield" is

shown.

23
The Setup menu item

Standby Manual activation/deactivation of the standby mode

- No power is fed into the grid.

- The Startup LED lights up orange.
- In standby mode, no other menu item can be accessed or set in the menu level.
- The automatic switching to the "NOW" menu item after 2 minutes if no key is pressed
is not activated.
- The Standby mode can only be deactivated manually by pressing the "Enter" key.
- Grid supply operation can be resumed at any time (deactivate "Standby").

Setting standby mode (manual shutoff for feeding energy into the grid):

1 Select the "Standby" item

2 Press the "Enter" key

The display alternates between "STANDBY" and "ENTER."

The Standby mode is now activated.
The Startup LED lights up orange.

Restoring the grid feed:

In Standby mode, the display alternates between "STANDBY" and "ENTER."

1 Press "Enter" to restore the grid power feed operation

The "Standby" item is displayed.

The inverter also switches to the Startup phase.
After the grid power feed operation is restored, the Operation Status LED lights up green.

WiFi Access For activating / deactivating of the WiFi Access Point (e.g. to set a system monitoring)
Point
Adjustment range WiFi Access Point
[stopped]

Activate WiFi ?

To activate the WiFi Access Point press the Enter key.

WiFi Access Point

[active]

The SS-ID (SS) and the password (PW) are displayed.

Deactivate WiFi AP ?

To deactivate the WiFi Access Point press the Enter

key.

24
 ***

EN-US
WiFi Access Point
[not available]

Is displayed, when no system monitoring is present at the invert-

er.

DATCOM Check of a data communication, entry of the inverter number, DATCOM night mode, pro-
tocol settings

Setting range Status / Inverter number / Protocol type

Status
Displays data communication available via Solar Net or an error that occurred in data com-
munication

Inverter Number
Number setting (address) of the inverter in a setup where multiple solar inverters are linked
together

Setting range 00 – 99 (00 = 100 inverter)

Factory setting 01

IMPORTANT! Each inverter must be assigned its own address when using multiple invert-
ers in a data communications system.

Protocol type
Defines the communication protocol used to transmit data:

Setting range Solar Net / Interface Protocol *

Factory setting Solar Net

* The protocol type Interface Protocol only works without the Datamanager card. Available
Datamanager cards must be removed from the inverter.

USB Value settings when using a USB stick

Setting range Safely remove hardware / software update / logging interval

Safely remove hardware

To remove a USB stick from the USB A socket on the data communication rack without
losing data.
The USB stick can be removed:
- when OK is displayed
- when the "Data Transfer" LED is no longer flashing or illuminated

Software update
For updating inverter software using a USB stick.

IMPORTANT! Firmware may only be updated by Fronius Service Technicians or Fronius

Service Partners.

25
 Procedure:

1 Download the "froxxxxx.upd" update file

(e.g., at http://www.fronius-usa.com; xxxxx stands for the respective version number)

NOTE! To ensure problem-free updates of inverter software, the USB stick

should have no hidden partitions and no encryption (see section "Suitable USB
Sticks).

2 Save the update file to the highest data level of the USB stick
3 Open the data communication area
4 Insert the USB stick with the update file into the USB socket in the data communication
area
5 In the Setup menu, select the menu item "USB" and then "Update Software"
6 Press the "Enter" key
7 Wait until a comparison of the current software version on the inverter and the new
software version is displayed:
- Page 1: Recerbo software (LCD), key controller software (KEY), country-setup
version (SET)
- Page 2: Power stage set software
8 Press the "Enter" key after every page

The inverter begins copying the data.

"UPDATE" and the saving progress of the individual tests is displayed in % until the data
for all electronic assemblies is copied.

After the copying is complete the inverter updates the required electronic assemblies one
after the other.
"UPDATE", the relevant assembly, and the update progress are displayed in %.

The inverter updates the display in the last step.

The display remains dark for approx. 1 minute, the control and status LEDs flash.

When the software update is complete, the inverter switches to the startup phase and then
to grid power feed operation. The USB stick can be removed.

Individual settings in the Setup menu are retained when the inverter software is updated.

Logging Interval
Activating / deactivating the logging function, as well as setting the logging interval

Unit Minutes
Setting range 30 Min. / 20 Min. / 15 Min. / 10 Min. / 5 Min. / No Log
Factory setting 30 Min.

30 Min. The logging interval is 30 minutes; new logging data are saved
to the USB stick every 30 minutes.
20 Min.
15 Min.
10 Min.
5 Min. The logging interval is 5 minutes; new logging data are saved to
the USB stick every 5 minutes.

No Log No data are saved

26
 IMPORTANT! The time must be set correctly in order for the logging function to work prop-
erly.

EN-US
Relay Activate Relay, Relay Settings, Relay Test

Setting range Relay Mode / Relay Test / Switch on Point* / Switch off Point*

* only shown if the 'E-manager' function has been activated under "Relay Mode."

Relay Mode
For selection of the various functions of the potential-free switching contact in the data
communications area:
- Alarm function
- Active output
- Energy manager

Setting range ALL / Permanent / OFF / ON / E-manager

Factory setting ALL

Alarm function:
Permanent / Switches the potential-free switching contacts for continual and tem-
ALL: porary service codes (e.g., brief interruption of grid power feed opera-
tion, a service code occurs a set number of times per day – can be set
in the "BASIC" menu)
Active output:
ON: The potential-free switching contact NO is switched on at all times
while the inverter is operating (as long as the display lights up or ap-
pears)
OFF: The potential-free switching contact NO is switched off
Energy manager:
E-manager: You can find additional information on the "Energy manager" function
in the "Energy Manager" section below

Relay test
Functional test to check if the potential-free switching contact works

Switch on point (only if "Energy manager" function is activated )

for setting the effective power limit from which the potential-free switching contact will be
switched on

Factory setting 1000 W

Setting range Switch off point – max. power rating of the inverter / W / kW

Switch off point (only if the "Energy manager" function is activated)

for setting the effective power limit from which the potential-free switching contact will be
switched off

Factory setting 500

Setting range 0 – switch on point / W / kW

27
Time / Date Setting of the time, the date, and the automatic daylight saving time adjustment

Setting range Set time / Set date / Time display format / Date display format /
Daylight saving time

Set time
Set the time (hh:mm:ss or hh:mm AM/PM – depends on the Time display format settings)

Set date
Set the date (dd/mm/yyyy or mm/dd/yyyy – depends on the Date display format settings)

Time display format

For setting the format in which the time is displayed

Setting range 12 / 24 hour clock

Factory setting Depends on the country setup

Date display format

For setting the format in which the date is displayed

Setting range mm/dd/yyyy / dd.mm.yy

Factory setting Depends on the country setup

Daylight saving time

Activate / deactivate automatic daylight saving time adjustment

NOTE! Only use the function for automatic daylight saving time adjustment when
there are no LAN or WLAN-compatible system components in a Fronius Solar Net
ring (e.g., Fronius Datalogger Web, Fronius Datamanager).
If LAN or WLAN-compatible system components are found, adjust this setting on
the system component web interface.

Setting range on / off

Factory setting on

IMPORTANT! The time and date must be correct to ensure that the daily and yearly values
and the daily characteristics are displayed correctly.

Display Settings
Setting range Language / Night mode / Contrast / Illumination

Language
Setting the display language

Setting range German, English, French, Dutch, Italian, Spanish, Czech, Slo-
vak, etc.

28
Night Mode
DATCOM night mode; controls DATCOM and display operation at night or when there is

EN-US
insufficient DC voltage available

Setting range AUTO / ON / OFF

Factory setting OFF

AUTO: DATCOM operation is constant as long as a Datalogger is connected to an

active, uninterrupted Solar Net.
The display is dark during the night and can be activated by pressing any
key.

ON: DATCOM operation is constant. The inverter provides 12 V constantly to

supply Solar Net with power. The display is always active.

IMPORTANT! The power consumption of the inverter is increased at night

to approximately 7 W when the DATCOM night mode is ON or on AUTO and
Solar Net components are connected.

OFF: No DATCOM operation at night, the inverter requires no AC power to supply

Solar Net.
The display is deactivated at night; the Fronius Datamanager is not avail-
able.

Contrast
set contrast on the display

Setting range 0–10

Factory setting 5

Since contrast depends on temperature, it may be necessary to adjust the "Contrast" menu
item when environmental conditions change.

Illumination
Initial setting for display illumination

The "Illumination" menu item only applies to the display background illumination.

Setting range AUTO / ON / OFF

Factory setting AUTO

AUTO: The display illumination is activated by pressing any key. If no key is pressed
for 2 minutes, the display backlight goes out.
ON: The display illumination will be permanently on when the inverter is active.
OFF: The display illumination will be permanently off.

29
Energy Yield Setting
- an OFFSET value for the Total energy display
- a measurement correction value for the day, year and total energy display
- the currency
- the feed-in tariff

Setting range E-meter offset/E-meter calibration/Currency/Feed-in tariff

E-meter offset
Specification of a value for the energy supplied that is added to the currently supplied en-
ergy (e.g., the transfer value when an inverter is replaced)
Unit Wh/kWh/MWh
Setting range 5-digit
Factory setting 0

E-meter calibration
Specification of a correction value so that the data shown on the inverter display corre-
spond to the calibrated data shown on the electric meter
Unit %
Setting range -5.0 to +5.0
Factory setting 0

Currency
Currency setting
Setting range 3-digit, A-Z

Feed-in tariff
Charge rate setting for the energy fed into the grid
Setting range 2-digit, 3 decimal places
Factory setting (depends on the country setup)

Fan for checking the fan functionality

Setting range Test fan #1 / Test fan #2

- Use the "Up" and "Down" keys to select Test fan #1

- Press the "Enter" key to start testing of the fans
- The fans run until the menu is exited by pressing the "Esc" key

30
 EN-US
Arc Detection for checking arc detection/interruption

Setting range ArcDetector Status/Start Self-test

Arc.det. Status
displays the current status of arc detection/interruption

Start Self-test
self-test to check whether the inverter interrupts grid power feed operation when an arc
is detected.

Test procedure:

1 Select "Arc Detection" in the Setup menu

2 Press the "Enter" key
3 Use the up and down keys to select "Start Self-test"
4 Press the "Enter" key

The self-test starts. The arc detection/interruption function simulates an arc and sends
the corresponding signal to the inverter.
If the test is successful, the inverter disconnects from the grid and stops grid power feed
operation.

The message "Self-test completed and Start AFCI" is shown on the display.

5 Confirm the indication by pressing the "Enter" key

31
The INFO menu item

INFO
INFO
(information on device and software)

Measured values
Measured values Display range: PV Iso. / U PV1 / U PV2 / GVDPR / Fan #1
LT status
Grid status
PV Iso.
Insulation resistance of the PV system
(for ungrounded solar modules and for solar modules grounded at the
negative pole)

U PV1
Current DC voltage at the terminal, also if the inverter is not feeding
in at all (from the first MPP Tracker)

U PV 2
Current DC voltage at the terminal, also if the inverter is not feeding
in at all (from the second MPP Tracker)

GVDPR
Grid voltage-dependent power reduction

Fan #1
Percentage value of the fan's target power
LT status The status display of the last error that occurred in the inverter can be
shown.

IMPORTANT! Status codes 306 (Power low) and 307 (DC low) ap-
pear naturally every morning and evening due to low solar irradiance.
These status codes are not the result of a fault.

- After pressing the "Enter" key, the power stage set status and the
last error that occurred are displayed
- Use the "Up" and "Down" keys to scroll through the list
- Press the "Back" key to exit the status and error list
Grid status The last 5 grid errors that occurred can be displayed:

- After pressing the "Enter" key, the last 5 grid errors that occurred
are displayed
- Use the "Up" and "Down" keys to scroll through the list
- Press the "Back" key to exit the grid error display

32
 EN-US
Device Informa- Used to display settings relevant to a power supply company. The displayed values de-
tion pend on the respective country setup or device-specific inverter settings.

Display range General/Country-specific setting/MPP tracker/Grid monitoring/

Grid voltage limits/Grid frequency limits/Q-mode/AC output lim-
it/AC voltage derating

General: Device type

Fam.
Country-specific set- Setup
ting: Country setup used

Version
Country setup version

Group
Inverter software update group
MPP Tracker: Tracker 1 (status, voltage)

Tracker 2 (status, voltage)

Grid monitoring: GMTi
Startup time of the inverter in s

GMTr
Restart time in s after a grid error

ULL
Grid voltage average value over 10 minutes in V.

LLTrip
Detection time for long-term voltage monitoring
Grid voltage limits: UILmax
Upper inner grid voltage value in V

UILmin
Lower inner grid voltage value in V

UOLmax
Upper outer grid voltage value in V

UOLmin
Lower outer grid voltage value in V
Grid frequency limits: FILmax
Upper inner grid frequency value in Hz

FILmin
Lower inner grid frequency value in Hz

FOLmax
Upper outer grid frequency value in Hz

FOLmin
Lower outer grid frequency value in Hz

33
 Q-mode: Currently set power factor (cos phi)
(e.g., Constant Cos(phi)/Constant Q/Q(U) characteristic/etc.)
AC output limit: Max. P AC
Manual power reduction
AC voltage derating: Status
ON/OFF voltage-dependent power reduction

GVDPRe
Threshold from which the voltage-dependent power reduction
begins

GVDPRv
Reduction gradient used to reduce the power. Example: 10%
per volt exceeding the GVDPRe threshold.

Message
Allows info messages to be sent via Fronius Solar Net

Version Display of version number and serial number of the PC boards installed in the inverter (e.g.,
for service purposes)

Display range Display/Display software/SW checksum/Memory data/Data

memory #1/Power stage set/SW power stage set/EMC filter/
Power stage #3/Power stage #4

34
Switching the key lock on and off

EN-US
General The inverter comes equipped with a ‘Key lock’ function.
When the ‘Keylock’ function is active, the Setup menu cannot be accessed, e.g., to protect
against setup data being changed by accident.
You must enter code 12321 to activate / deactivate the ‘Key lock’ function.

Switching the Key

1 Press the "Menu" key.
Lock On and Off

The menu level is displayed.

2 Press the unassigned "Menu / Esc"

key
5 x.

In the "CODE" menu, the "Access Code"

is displayed; the first digit flashes.

3 Enter code 12321: Use the "Up" and

"Down" keys to select a value for the
first digit of the code.
4 Press the "Enter" key.

The second digit flashes.

5 Repeat steps 3 and 4 for the second,

third, fourth and fifth digit in the code
until...

...the set code flashes.

6 Press the "Enter" key.

In the "LOCK" menu, the "Key lock" func-

tion is displayed.

7 Use the "Up" and "Down" keys to

switch the key lock on or off:

ON = the key lock function is activat-

ed (the SETUP menu item cannot be
accessed)

OFF = the key lock function is deac-

tivated (the SETUP menu item can be
accessed).

8 Press the "Enter" key.

35
USB Stick as a Data Logger and for Updating Invert-
er Software

USB Stick as a A USB stick connected to the USB A socket can act as a data logger for an inverter.
Data Logger
Logging data saved to the USB stick can at any time
- be imported into the Fronius Solar.access software via the included FLD file
- be viewed directly in third-party applications (e.g., Microsoft® Excel) via the included
CSV file.

Older versions (up to Excel 2007) have a row limit of 65536.

Further information on "Data on a USB stick", "Data volume and storage capacity" as well
as "Buffer memory" can be found at:

 http://www.fronius.com/QR-link/4204260171EN

Suitable USB Due to the number of USB sticks on the market, we cannot guarantee that every USB stick
Sticks will be recognized by the inverter.

Fronius recommends using only certified, industrial USB sticks (look for the USB-IF logo).

The inverter supports USB sticks using the following file systems:
- FAT12
- FAT16
- FAT32

Fronius recommends that the USB stick only be used for recording logging data or for up-
dating the inverter software. USB sticks should not contain any other data.

USB symbol on the inverter display, e.g.,

in the "NOW" display mode:

When the inverter recognizes a USB stick,

the USB symbol will appear at the top right
of the display.

When inserting the USB stick, make sure

that the USB symbol is displayed (it may
also be flashing).

NOW
AC Output Power

36
 NOTE! Please be aware that in outdoor applications the USB stick may only func-
tion in a limited temperature range. Make sure, for example, that the USB stick

EN-US
will also function at low temperatures for outdoor applications.

USB Stick for Up- The USB stick can be used to help end customers update inverter software via the USB
dating Inverter menu item in the SETUP menu item: the update file is first saved on the USB stick and then
Software transferred to the inverter. The update file must be saved in the USB stick root directory.

Removing the
Safety information for removing a USB stick
USB Stick

IMPORTANT! To prevent a loss of data,

X Do not disconnect the connected USB stick should only be
removed under the following conditions:
USB-Stick - via the SETUP and "Safely remove
while LED is flashing! USB / hardware" menu items
- when the "Data Transfer" LED is no
longer flashing or illuminated.

37
The Basic menu

General The following important parameters are set in the Basic menu for the installation and op-
eration of the inverter:

- DC operating mode - Insulation settings

- Fixed voltage - Temperature warning
- MPPT1 / MPPT2 initial voltage - TOTAL reset
- USB logbook - Event meter

Accessing the
1 Press the "Menu" key.
Basic menu

The menu level is displayed.

2 Press the unassigned "Menu / Esc"

key
5 x.

In the "CODE" menu, the "Access Code"

is displayed; the first digit flashes.

3 Enter code 22742: Use the "Up" and

"Down" keys to select a value for the
first digit of the code.
4 Press the "Enter" key.

The second digit flashes.

Access Code
5 Repeat steps 3 and 4 for the second,
third, fourth and fifth digit in the code
until...

...the set code flashes.

6 Press the "Enter" key.

The Basic menu is shown.

MPP Tracker 1
MPP Tracker 2 7 Use the "Up" and "Down" keys to se-
USB Eventlog lect the desired item.
Input Signal
8 Edit the selected item by pressing the
SMS / Relay
"Enter" key.

9 Press "Esc" to exit the Basic menu.

38
 EN-US
Items in the Basic The Basic menu contains the following items:
Menu
MPP Tracker 1

- DC Tracking Mode:
MPP AUTO
FIX
MPP USER

- Dyn. Peak Manager:

ON / OFF

- Fix PV Voltage:
For entering the fixed voltage, 150 - 800 V

- MPPT1 Start Voltage:

For entering the MPPT1 initial voltage, 150 - 800 V
MPP Tracker 2

- MPP Tracker 2:
ON / OFF

- DC operating mode:
MPP AUTO
FIX
MPP USER

- Dyn. Peak Manager:

ON / OFF

- Fix PV Voltage:
For entering the fixed voltage, 150 - 800 V

- MPPT2 Start Voltage:

For entering the MPPT2 initial voltage, 150 - 800 V
USB Eventlog
Activating or deactivating the function to save all error messages to a USB stick
AUTO / OFF / ON
Input Signal

- Mode of operation:
Ext Sig. / S0-Meter / OFF

- Trigger response (at Mode of operation „Ext. Sig.“):

Warning / Ext. Stop

- Connection type (at Mode of operation „Ext. Sig.“):

N/C / N/O

39
 SMS / Relay

- Event Delay:
For entering the delay time from when an SMS is sent or from when the relay should
switch
900–86400 seconds

- Event Counter:
For entering the number of errors following which an SMS is sent or the relay should
switch:
10–255
Insulation settings

- Insulation warning:
to activate and deactivate the insulation monitoring with display of a warning without
interrupting feed-in in the event of an insulation error
ON / OFF (depends on the country setup)

- Threshold warning:
to set an insulation threshold below which the inverter displays a warning (without
interrupting feed-in)
depends on the country setup set

- Threshold error:
to set an insulation threshold under which the inverter displays an error message
and interrupts feed-in
depends on the country setup
Temperature warning
to activate / deactivate the overtemperature warning for an event;
the overtemperature warning is sent and shown on the display.
ON / OFF
TOTAL Reset
resets the max. and min. voltage values and the max. power of feeding in in the LOG
menu item to zero.
Once you have reset the values, this cannot be undone.

To reset the values to zero, press the "Enter" key.

"CONFIRM" is displayed.
Press the "Enter" key again.
The values are reset and the menu is displayed.

40
Status Diagnosis and Troubleshooting

EN-US
Displaying Sta- Your inverter is equipped with a self diagnostic system that automatically identifies a large
tus Codes number of possible operation issues by itself and displays them on the screen. This en-
ables you to know immediately if there are any malfunctions in the inverter, the photovoltaic
system or any installation or operating errors.

Whenever the self diagnostic system has identified a particular issue, the respective status
code is shown on the screen.

IMPORTANT! Status codes may sometimes appear briefly as a result of the control re-
sponse from the inverter. If it subsequently continues to operate normally, there has not
been a system error.

Total Failure of If the display remains dark for a long time after sunrise:
the Display - check the AC voltage at the inverter's connections:
the AC voltage must be 208–240 V (+10% / -12%) according to the grid.

Class 1 Status Status codes in class 1 are typically temporary. Their cause lies in the grid.
Codes
The grid frequency is too high and the inverter is not permitted to feed energy into the grid
because this would not comply with a standard. No device fault has occurred.
The inverter will first respond by disconnecting from the grid. Then, the grid will be checked
for the duration of the observation period stipulated. If, after the end of this period, no fur-
ther defect is identified, your inverter resumes operating and feeding energy into the grid.

The GPIS soft start function is activated depending on the country setup:
according to national guidelines, the output of the inverter increases continuously after a
shutdown due to an AC error.

Code Description Behavior Remedy

102 AC voltage too high
103 AC voltage too low
105 AC frequency too high Grid conditions are being test-
Check grid connections.
ed and as soon as they are
106 AC frequency too low If this status code keeps recur-
again within the permissible
107 No AC grid detected ring, contact your system in-
range, the inverter will resume
staller.
108 Stand alone operation detect- feeding power into the grid.
ed
112 RCMU error

Class 2 status
codes

Code Description Details Rectification

212 Undervoltage at L1 Grid conditions are being test-
213 Undervoltage at L1 ed and as soon as they are Check grid connections. If this
back within the permissible status code keeps recurring,
222 Undervoltage at L2 range, the inverter will resume contact your system installer.
223 Overvoltage at L2 grid power feed operation.

41
Code Description Details Rectification
The status code is displayed
240 Arc detected -
for approx. 4 seconds.
If an arc has been detected,
The status code 241 is dis- check the entire affected PV
played directly after 240; the system for damage before re-
241 Arc detected
inverter disconnects from the setting the inverter.
grid for safety reasons. Reset status code by pressing
the "Enter" key.
Reset the status code by
pressing the "Enter" key.
The inverter resumes grid
Status code 242 is displayed
242 Arc detected power feed operation.
after resetting status code 241.
If the status code keeps recur-
ring, contact your system in-
staller.
Reset AC.
The test is repeated.
The inverter disconnects from
245 Arc detector self test failed If the status code persists:
the grid.
contact a Fronius-trained ser-
vice technician.
Arc detector current sensor de- If status code persists: contact
247 The inverter disconnects from
fective a Fronius-trained service tech-
the grid. nician.
249 Arc detector defective

Class 3 Status Class 3 includes status codes that may appear during grid power feed operation and do
Codes not cause permanent interruption of the grid power feed operation.

After automatic disconnection from the grid and waiting for its conditions to return to those
stipulated, your inverter will try to resume grid power feed operation.

Code Description Details Rectification

Brief interruption of grid power
Error is automatically rectified;
301 Over-current (AC) feed operation due to overcur-
if status code persists: contact
rent in the inverter.
a Fronius-trained service tech-
The inverter returns to the
302 Over-current (DC) nician.
startup phase.

Power stage set over tempera- If required, clean cool air vents
303 and cooling elements with
ture Brief interruption of grid power
compressed air.
feed operation due to over
The fault is rectified automati-
temperature.
cally.
The inverter returns to the
If this status code keeps recur-
startup phase.
304 Interior temperature too high ring, contact your system in-
staller.

42
Code Description Details Rectification

EN-US
LOW PV POWER
Intermediate circuit voltage
306 has dropped below permissible The fault is rectified automati-
threshold value for grid power Brief interruption of grid power cally.
feed operation. feed operation. If this status code keeps recur-
LOW PV VOLTAGE The inverter returns to the ring with sufficient solar irradi-
DC input voltage has dropped Startup phase. ance, contact your system
307 below permissible threshold installer.
value for grid power feed oper-
ation.

IMPORTANT! Status codes 306 (LOW PV POWER) and 307 (LOW PV VOLTAGE) appear naturally every
morning and evening due to low solar irradiance. These status codes are not the result of a fault.

308 Intermediate circuit overvolt-

age Brief interruption of grid power Error is automatically rectified;
DC input voltage for MPPT 1 feed operation. if status code persists: contact
309
too high The inverter returns to the a Fronius-trained service tech-
313 DC input voltage for MPPT 2 Startup phase. nician.
too high

Class 4 Status Class 4 status codes may require the intervention of a trained Fronius service technician.
Codes

Code Description Details Rectification

No internal communication
401
with power stage set.
Power stage set temperature The inverter will automatically
406 If status code persists: contact
sensor defective attempt to connect again and,
a Fronius-trained service tech-
if possible, resume grid power
Internal temperature sensor nician.
407 feed operation.
defective
408 DC feed-in detected
The "fixed voltage" setting has
been selected instead of MPP If this status code keeps recur-
412 voltage operation and the volt- - ring, contact your system in-
age is set to a value that is too staller.
low or too high.
Safety cut-out has been trig-
Inverter does not feed energy
415 gered by option card or RE-
into the grid.
CERBO
No communication between
416 power stage set and control
unit
If status code persists: contact
417 ID problem with hardware a Fronius-trained service tech-
The inverter will automatically
419 Unique ID conflict attempt to connect again and, nician.
421 HID range error if possible, resume grid power
feed operation.
Communication with the power
425
stage set is not possible
426 -
Possible hardware defect
428

43
Code Description Details Rectification
Carry out AC reset (switch au-
tomatic circuit breaker off and
Inverter does not feed energy on); update inverter firmware;
431 Software problem
into the grid. If status code persists: contact
a Fronius-trained service tech-
nician.
Function incompatibility (one
or more PC boards in the in- The inverter will automatically Update inverter firmware;
436 verter are not compatible with attempt to connect again and, If status code persists: contact
each other, e.g.,after PC board if possible, resume feeding en- a Fronius-trained service tech-
replacement) ergy into the grid nician.
437 Power module problem
Function incompatibility (one The inverter will automatically
Update inverter firmware;
or more PC boards in the in- attempt to connect again and,
If status code persists: contact
438 verter are not compatible with if possible, resume feeding en-
a Fronius-trained service tech-
each other, e.g.,after PC board ergy into the grid
nician.
replacement)
If status code persists: contact
Intermediate circuit voltage too Inverter does not feed energy
443 a Fronius-trained service tech-
low or unsymmetrical into the grid.
nician.
Update the inverter firmware.
Limit value setting not permit- If status code persists: contact
445
ted a Fronius-trained service tech-
nician.
Inverter does not feed energy
447 Insulation fault into the grid for safety reasons.
If this status code keeps recur-
Neutral conductor not connect-
448 ring, contact your system in-
ed
staller.
450 No guard found
451 Memory error detected
Communication problem be-
452 The inverter will automatically
tween processors If status code persists: contact
attempt to connect again and,
453 Brief grid voltage error a Fronius-trained service tech-
if possible, resume grid power
454 Brief grid frequency error nician.
feed operation.
456 Anti-islanding function has
stopped running properly
457 Grid relay stuck
Error receiving measuring sig-
459
nal for the insulation test
Reference power source for
the digital signal processor
460 If status code persists:
(DSP) is operating outside of Inverter does not feed energy
tolerances contact a Fronius-trained ser-
into the grid.
vice technician.
461 Error in DSP data memory
462 Error in DC feed-in monitoring
routine
463 AC polarity reversed, AC con-
nector plugged in incorrectly

44
Code Description Details Rectification

EN-US
474 RCMU sensor faulty
Solar module ground, insula-
If this status code keeps recur-
475 tion error (connection between Inverter does not feed energy
ring, contact your system in-
solar module and ground) into the grid.
staller.
Supply voltage for driver too
476
low
Function incompatibility (one
or more PC boards in the in-
480, Inverter does not feed energy
verter are not compatible with Update inverter firmware; *)
481 into the grid.
each other, e.g.,after PC board
replacement)
Reset AC (switch automatic
Commissioning is not com- Inverter does not feed energy
482 circuit breaker on and off), car-
plete into the grid.
ry out full commissioning.
Check MPP settings;
Voltage UDCfix for MPP2 string Inverter does not feed energy If status code persists:
483
is outside of valid range into the grid. contact a Fronius-trained ser-
vice technician.
Carry out AC reset (switch au-
tomatic circuit breaker off and
Inverter does not feed energy on);
485 CAN transmission buffer is full
into the grid. If status code persists:
contact a Fronius-trained ser-
vice technician.

Class 5 Status Class 5 status codes generally do not impair grid power feed operation, but can lead to lim-
Codes itations in grid power feed operation. They will be displayed until the status code is ac-
knowledged by pressing a key (the inverter, however, continues working normally in the
background).

Code Description Details Rectification

If this status code keeps recur-
Insulation error on the solar Warning message is shown on
502 ring, contact your system in-
modules the display.
staller.
Acknowledge status code;
check if all conditions for fault-
free grid power feed operation
No feed-in within the last 24 Warning message is shown on are fulfilled (e.g., if the solar
509
hours the display. modules are covered with
snow).
If the status code persists: ob-
serve further status codes.
515 No internal communication Warning message on the dis-
with filter play If status code persists: Contact
a Fronius-trained service tech-
516 Communication with memory Warning message of memory nician
unit not possible unit

45
Code Description Details Rectification
If required, clean cool air vents
and cooling elements with
compressed air.
If a power derating occurs, a
Power derating due to exces- The fault is rectified automati-
517 warning message is shown on
sive temperature cally.
the display.
If this status code keeps recur-
ring, contact your system in-
staller.
Function incompatibility (one
or more PC boards in the in- If this status code keeps recur-
Possible error displays or mal-
558 verter are not compatible with ring, contact your system in-
functions in the inverter.
each other, e.g., after PC staller.
board replacement)
The status code is displayed As soon as the grid frequency
with excessive grid frequency. returns to the permissible
The inverter reduces the pow- range and the inverter re-
Power derating due to over-fre-
560 er. sumes normal operation, the
quency
The status indicator is dis- error is rectified automatically.
played until the inverter re- If the status code persists,
sumes normal operation. contact your system installer.
566 Arc detector switched off The status code is displayed No error!
(e.g., with external arc moni- every day until the arc detector Confirm status code displayed
toring) is activated again. by pressing the "Enter" key.

Class 7 Status Class 7 status codes concern the inverter control unit, configuration and data recording,
Codes and can directly or indirectly affect grid feed operation.

Code Description Details Rectification

Conflict between inverter num-
Correct inverter number in Set-
705 bers (e.g., number is assigned -
up menu
twice)
Acknowledge status code.
EEPROM was reinitialized or Warning message is shown on If status code persists: contact
721
EEPROM is defective the display. a Fronius-trained service tech-
nician.
Initialization error – USB stick Check or replace the USB
731
is not supported stick.
Check the USB stick file sys-
Warning message is shown on
tem.
the display.
732 Overcurrent on the USB stick If status code persists: contact
a Fronius-trained service tech-
nician.
Insert or check the USB stick.
Warning message is shown on If status code persists: contact
733 No USB stick inserted
the display. a Fronius-trained service tech-
nician.
Check the update file (e.g., for
the proper file name).
Update file is not detected or is Warning message is shown on
734 If status code persists: contact
not available the display.
a Fronius-trained service tech-
nician.

46
Code Description Details Rectification

EN-US
Check the update file.
If necessary, download the
correct update file for the de-
Update file does not corre- Warning message is shown on
vice (e.g., at http://www.fro-
735 spond to the device, update file the display; update process is
nius.com).
is too old canceled.
If status code persists: contact
a Fronius-trained service tech-
nician.
Check the USB stick and the
files on the USB stick or re-
place the USB stick.
Remove the USB stick only
Warning message is shown on
736 Write or read error occurred when the "Data Transfer" LED
the display.
is no longer flashing or lit.
If status code persists: contact
a Fronius-trained service tech-
nician.
Free up memory. Remove
write-protection. If necessary,
Log file could not be saved
Warning message is shown on check or replace the USB stick.
738 (e.g., USB stick is write-pro-
the display. If status code persists: contact
tected or full)
a Fronius-trained service tech-
nician.
Repeat the update process.
Check the USB stick.
Error occurred during the up- Warning message is shown on
743 If status code persists: contact
date the display.
a Fronius-trained service tech-
nician.
Download the update file
Warning message is shown on again.
745 Update file is faulty the display; update process is If status code persists: contact
canceled. a Fronius-trained service tech-
nician.
751 Incorrect time Reset the time and date on the
inverter.
Warning message is shown on
Communication error in the If status code persists: contact
752 the display.
Real Time Clock module a Fronius-trained service tech-
nician.
Error message is shown on the
Hardware error in the Real
757 display; the inverter does not
Time Clock module
feed energy into the grid.
If status code persists: contact
Incorrect timing; time may be
Internal error: Real Time Clock a Fronius-trained service tech-
758 set incorrectly (normal grid
module is in emergency mode nician.
power feed operation).
Emergency power limiter has Error message is shown on the
766
been activated (max. 750 W) display

Customer Service IMPORTANT! Please contact your Fronius dealer or a Fronius-trained service technician if
- an error appears frequently or for a long period of time
- an error appears that is not listed in the tables

47
Operation in When operating the inverter in extremely dusty environments:
dusty environ- when necessary, clean the cooling elements and fan on the back of the inverter and the
ments supply air openings in the wall bracket using clean compressed air.

48
Technical Data

EN-US
Fronius Primo 3.8-1 208-240 5.0-1 208-240 6.0-1 208-240

Input data
MPP voltage range 200 - 800 V 240 - 800 V 240 - 800 V
Initial voltage 150 V
Max. input voltage
1000 V
at 1000 W/m² / 57.2°F (14 °C) in an open circuit
Nominal input voltage 650 V 650 V 660 V
Nominal input current 6.1 A 7.9 A 9.4 A
Max. input current 12.0 A 12.0 A 18.0 A
Max. short circuit current of the solar modules 15.0 A 15.0 A 22.5 A

Output data
Nominal output power (Pnom) at 208 V 3800 W 5000 W 6000 W
at 220 V 3800 W 5000 W 6000 W
at 240 V 3800 W 5000 W 6000 W
Pnom at +131°F (55°C) at 208 V 3800 W 5000 W 5300 W
at 220 V 3800 W 5000 W 5450 W
at 240 V 3800 W 5000 W 5550 W
Max. output power 3800 W 5000 W 6000 W
3800 W 5000 W 6000 W
3800 W 5000 W 6000 W
Nominal mains voltage 208 V / 220 V / 240 V
Mains voltage tolerance -12 % / +10 %
Operating AC voltage range at 208 V 183 - 229 V
at 220 V 194 - 242 V
at 240 V 211 - 264 V
Grid voltage setting range at 208 V 104 - 288 V
at 220 V 104 - 288 V
at 240 V 104 - 288 V
Voltage limit accuracy 1% of nominal value
Voltage limit clearing times setting
0.016 - 21.0 s
range
Nominal output current at 208 V 18.3 A 24.0 A 28.8 A
at 220 V 17.3 A 22.7 A 27.3 A
at 240 V 15.8 A 20.8 A 25.0 A
Number of phases 1
Maximum output fault current / duration at 208 V 384 A / 146 ms
at 220 V 560 A / 172 ms
at 240 V 584 A / 154 ms
Nominal output frequency 50 / 60 Hz
Output frequency range 48,0 - 50,5 Hz / 59,3 - 60,5 Hz
Setting range for grid frequency 45,0 - 55,0 Hz / 50,0 - 65,0 Hz
Frequency limit accuracy 0.05 Hz
Frequency clearing times setting range 0.016 - 600 s
Total harmonic distortion <5%
Power factor (cos phi) 0.85 - 1 ind./cap.. 1)

49
Fronius Primo 3.8-1 208-240 5.0-1 208-240 6.0-1 208-240

General data
Maximum efficiency 97.9 %
CEC efficiency at 208 V 96.0 % 96.5 % 96.5 %
at 220 V 95.5 % 96.5 % 96.5 %
at 240 V 95.5 % 96.5 % 96.5 %
Night self-consumption at 208 V 0.4 W 0.4 W 0.4 W
at 220 V 0.6 W 0.6 W 0.6 W
at 240 V 0.6 W 0.6 W 0.6 W
Self-consumption during operation 10 W
Cooling Forced-air ventilation
Degree of protection NEMA4X
Dimensions H x W x D 24.7 x 16.9 x 8.1 inch (628 x 428 x 205 mm)
Weight 47.29 lbs. (21.45 kg)
Shipping dimensions H x W x D 30.1 x 21.7 x 11.4 inch (770 x 550 x 290 mm)
Shipping weight 57.56 lbs. (26.11 kg)
Permissible ambient temperature
-40 F - +131 °F (-40 °C - +55°C)
(at 95% rel. humidity)
Permissible storage temperature
-40 F - +158 °F (-40 °C - +70°C)
(with 95% rel. humidity)

Protection devices
Insulation monitoring Integrated
Stand alone operation protection Integrated
Reverse polarity protection Integrated
Arc Detector / Interrupter Integrated
Overtemperature Operating point offset / active cooling

1) Ind. = inductive cap. = capacitive

50
Fronius Primo 7.6-1 208-240 8.2-1 208-240

EN-US
Input data
MPP voltage range 250 - 800 V 270 - 800 V
Initial voltage 150 V
Max. input voltage
1000 V
at 1000 W/m² / 57.2°F (14 °C) in an open circuit
Nominal input voltage 660 V
Nominal input current 12.3 A 13.3 A
(12.6 A at 208 V)
Max. input current 18.0 A 18.0 A
Max. short circuit current of the solar modules 22.5 A 22.5 A

Output data
Nominal output power (Pnom) at 208 V 7600 W 7900 W
at 220 V 7600 W 8200 W
at 240 V 7600 W 8200 W
Pnom at +131°F (55°C) at 208 V 5300 W 5300 W
at 220 V 5450 W 5450 W
at 240 V 5550 W 5550 W
Max. output power at 208 V 7600 W 7900 W
at 220 V 7600 W 8200 W
at 240 V 7600 W 8200 W
Nominal mains voltage 208 V / 220 V / 240 V
Mains voltage tolerance -12 % / +10 %
Operating AC voltage range at 208 V 183 - 229 V
at 220 V 194 - 242 V
at 240 V 211 - 264 V
Grid voltage setting range at 208 V 104 - 288 V
at 220 V 104 - 288 V
at 240 V 104 - 288 V
Voltage limit accuracy 1% of nominal value
Voltage limit clearing times setting range 0.016 - 21.0 s
Nominal output current at 208 V 36.5 A 38.0 A
at 220 V 34.5 A 37.3 A
at 240 V 31.7 A 34.2 A
Number of phases 1
Maximum output fault current / duration at 208 V 384 A / 146 ms
at 220 V 560 A / 172 ms
at 240 V 584 A / 154 ms
Nominal output frequency 50 / 60 Hz
Output frequency range 48,0 - 50,5 Hz / 59,3 - 60,5 Hz
Setting range for grid frequency 45,0 - 55.0 Hz / 50,0 - 65,0 Hz
Frequency limit accuracy 0.05 Hz
Frequency clearing times setting range 0.016 - 600 s
Total harmonic distortion -
Power factor (cos phi) 0.85 - 1 ind./cap.. 1)

General data
Maximum efficiency 97.9 %

51
Fronius Worldwide - www.fronius.com/addresses

Fronius International GmbH Fronius USA LLC Solar Electronics Division

4600 Wels, Froniusplatz 1, Austria 6797 Fronius Drive, Portage, IN 46368
E-Mail: pv-sales@fronius.com E-Mail: pv-us@fronius.com
http://www.fronius.com http://www.fronius-usa.com

Under http://www.fronius.com/addresses you will find all addresses of our sales branches and partner firms!

USA FRONIUS Technical support contact information:

Mon. – Fri. 8:00 am – 7:00 pm CST (excluding holidays)
(219) 734-5500 or Toll Free 1-877-FRONIUS