Fronius IG Plus 35, Fronius IG Plus 50, Fronius IG Plus 70, Fronius IG Plus 100, Fronius IG Plus 120 Operating Instructions Manual

Fronius IG Plus
35 / 50 / 70 / 100 / 120 / 150

42,0426,0062,EA 022009

Operating Instructions

GB

Inverter for grid-connected
photovoltaic systems

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Dear Fronius Customer,

Thank you for choosing Fronius - and congratulations on your new, high-quality, high­tech Fronius product. This introduction should provide you with general information
about the equipment. Please read it carefully to learn about the many great features of
your new Fronius product. This is the best way to get the most out of all the advantages
that it has to offer.

Please also note the safety information and the safety precautions for the product
installation location. Following all product instructions will ensure long-lasting quality and
reliability. And these are the essential ingredients for outstanding results.

Introduction

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I

Safety Instructions

DANGER!

WARNING!

CAUTION!

“NOTE“ indicates a situation which could adversely affect work results and

may cause damage to equipment.

NOTE

This equipment has been manufactured using state-of-the-art technology
and in accordance with general safety regulations. However, incorrect
operation or misuse may endanger:

- the life and well-being of the operator or third parties

- the equipment and other property of the owner/operator

- the efficient operation of the equipment.

All persons involved with equipment startup, service and maintenance must:

- be suitably qualified

- be familiar with electrical installations

- have completely read and followed these operating instructions

The operating instructions must be available at the equipment location at all
times. In addition to the operating instructions, all applicable local rules and
regulations regarding accident prevention and environmental protection must
also be followed.

All safety instructions and warning signs on the equipment itself:

- must be maintained in legible condition

- must not be damaged

- must not be removed

- must not be covered or painted over

General

Important

“DANGER!“ indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

“WARNING!“ indicates a potentially hazardous situation which, if not
avoided, will result in death or serious injury.

“CAUTION!“ indicates a potentially harmful situation which, if not avoided,
may result in minor and moderate injury or property damage.

“Important“ indicates practical tips and other useful information. It is not a
signal word for a harmful or dangerous situation.

Please pay special attention when one of the above symbols appears in the
manual.

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II

Maintenance and repair may only be carried out by an authorized specialist.

The use of third-party parts does not guarantee that they were designed and
manufactured according to operational demands and safety requirements.
Use only original spare parts (also applies to standard parts).

Do not carry out any alterations, installations or modifications to the device
without first obtaining the manufacturer’s permission.

Immediately replace any components that are not in perfect condition.

The equipment may only be operated in compliance with its intended use.

Any other purpose does not constitute intended use. The manufacturer is not
responsible for any damages resulting from unintended use.

Intended use also includes:

- reading and complying with all general information as well as safety
information and warnings from the operating instructions

- compliance with all inspection and maintenance requirements

- installation as per operating instructions

Where appropriate, the following guidelines should also be applied:

- Utility company regulations regarding grid feed-in

- Information from solar module manufacturer

Intended Use

For information about where the safety instructions and warning signs are
located on the equipment, please refer to the “General“ section of your
equipment’s operating instructions.

Any equipment malfunctions which might impair safety must be remedied
immediately before the device is turned on.

Your safety is at stake.

General

(continued)

Operation and/or storage of the device outside of the stipulated range does
not constitute intended use. The manufacturer is not responsible for any
damages resulting from unintended use.

Please refer to the technical data in your operating instructions for informati­on about permitted ambient conditions.

Ambient Conditi­ons

Qualified Person­nel

The service information in these operating instructions is only intended for
qualified personnel. An electrical shock can be fatal. Please do not carry out
any activities other than those referred to in the documentation even if you
are suitably qualified.

All cables and wires must be secured, undamaged, insulated and adequately
dimensioned. Loose connections, scorched, damaged or under-dimensioned
cables and wires must be repaired immediately by an authorized specialist.

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III

Safety Precauti­ons at Equipment
Location

When installing devices with air vents, make sure that cool air can flow freely through the
vents unobstructed. The device should only be operated in accordance with the protec­tion class listed on the rating plate.

EMC Device
Classifications

Devices of emission class A:

- Are only for use in industrial areas.

- Can cause line-bound and radiated interference in other areas.

Devices of emission class B:

- Meet the emission requirements for residential and industrial areas. This

is also true for residential areas in which the energy is supplied from the
public low voltage grid.

EMC device classification as per rating plate or technical data

EMC Precautions In special cases, there may still be interference for the specified application

area despite maintaining standardized emission limit values (e.g. when
sensitive equipment is located at the setup location or when the setup
location is near radio or television receivers).
In this case, the operator is obliged to take proper action to rectify the
situation.

Grid connection

Devices with a high output (> 16 A) can influence the voltage quality of the
grid due to a high current input into the main supply.
This can affect several device types in the form of:

- Connection limitations

- Requirements regarding permitted mains impedance

*)

- Requirements regarding minimum required short circuit power

*)

*)

for each interface to the public grid

See technical data

In this case, the operator or the user of the device must make sure whether
or not the device may be connected, if necessary by contacting the power
supply company.

Information on
Noise Emission
Values

The inverter generates a maximum sound power level of <80dB(A) (ref.
1pW) at full-load operation according to IEC 62109-1.

The cooling of the device takes place via an electronic temperature control
system at the lowest possible noise level and depends on the power used,
ambient temperature and the soiling level of the device, etc.

A workplace-related emissions value cannot be provided for this device
because the actual noise level that occurs depends strongly on the installati­on situation, the grid quality, the surrounding walls and the general properties
of the space.

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IV

Equipment with the CE marking fulfils the basic requirements of the Guideli­ne Governing Low-Voltage and Electromagnetic Compatibility. (For more
information, please see the attachment and/or the “Technical Data“ section in
your documentation).

Safety Markings

The user is responsible for backing up data relating to changes made to
factory settings. The manufacturer will not accept liability if personal settings
are deleted.

Data Security

The manufacturer maintains the copyright to these operating instructions.

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 in­structions shall not provide the basis for any claims whatsoever on the part
of the purchaser. We would be grateful for any comments or suggestions
regarding improvements and/or error corrections for the operating instruc­tions.

Copyright

This device should not be disposed of in residential waste.
To comply with European Directive 2002/96/EC on Waste Electrical and
Electronic Equipment and its implementation as national law, electrical
equipment that has reached the end of its life must be collected separately
and returned to an approved recycling facility. Any device that you no longer
require must be returned to your dealer or you must find an approved collec­tion and recycling facility in your area.
Ignoring this EU Directive may have adverse affects on the environment and
your health.

Disposal

Danger of damage to electronic components due to electrostatic discharge.
Take appropriate ESD precautions when replacing and installing compon­ents.

ESD Precautions

Electrical Installa­tions

Electrical installations may only be carried out in accordance with relevant
national and local standards and regulations.

The device should only be operated when all safety equipment is fully func­tional. If safety equipment is not fully functional, there is a danger to:

- the life and well-being of the operator or third parties

- the equipment and other property of the owner/operator

- the efficient operation of the equipment

Safety equipment that is not fully functional must be repaired by an authori­zed specialist before the device is turned on.

Never bypass or disable safety equipment.

Safety Precauti­ons in Normal­Operation

1

Table of Contents

General Information 7

Operator and Equipment Protection .................................................................................. 9

Safety............................................................................................................................. 9

Operator and Equipment Protection .............................................................................. 9

Galvanic Isolation .......................................................................................................... 9

Monitoring the mains network ........................................................................................ 9

The Fronius IG Plus in the Photovoltaic System .............................................................. 10

General ........................................................................................................................ 10

Tasks............................................................................................................................ 10

Converting DC to AC current ....................................................................................... 10

Fully Automatic Operational Management ................................................................... 10

Display Function and Data Communication ................................................................. 10

System Upgrades ......................................................................................................... 11

Inverter Cooling using Forced-air Ventilation ................................................................11

Power Derating .............................................................................................................11

Installation and Startup 13

Fronius IG Plus Installation and Connection .................................................................... 15

Fronius IG Plus Setup.................................................................................................. 15

Overview ...................................................................................................................... 15

Fronius IG Plus Connection Options ................................................................................ 16

Fronius IG Plus Connection Options ........................................................................... 16

Target Punch-outs on the Fronius IG Plus ....................................................................... 18

General ........................................................................................................................ 18

Target Punch-outs for Cable Inputs ............................................................................. 18

Location Selection............................................................................................................ 20

General Location Selection.......................................................................................... 20

Location Selection for Inside Installation ..................................................................... 21

Location Selection for Outside Installation................................................................... 21

Fronius IG Plus Installation .............................................................................................. 22

Attaching Wall Bracket................................................................................................. 22

Fronius IG Plus Installation .......................................................................................... 23

Connecting the Fronius IG Plus to the Public Grid (AC) .................................................. 24

Monitoring the Mains Network ..................................................................................... 24

Installations with Several Inverters .............................................................................. 24

AC-side Terminals........................................................................................................ 24

Connecting Aluminum Cables ...................................................................................... 25

Cross Section of AC Cable .......................................................................................... 25

Safety........................................................................................................................... 25

Connecting the Fronius IG Plus to the Public Grid (AC) .............................................. 26

Fuse Recommendation for the AC-side ....................................................................... 26

2

Connecting Solar Module Strings to the Fronius IG Plus (DC) ........................................ 27

General Information About Solar Modules ................................................................... 27

Safety........................................................................................................................... 27

DC-Terminals ............................................................................................................... 28

Connecting Aluminum Cables ...................................................................................... 28

Overview ...................................................................................................................... 29

Ungrounded System: Connecting Solar Module Strings .................................................. 30

Cable Cross Section of Solar Module Strings .............................................................. 30

Ungrounded System: Connecting Solar Module Strings.............................................. 30

Selecting String Fuses ................................................................................................. 32

Using String Fuses in Fronius IG Plus ......................................................................... 32

Criteria for the Proper Selection of String Fuses.............................................................. 33

General ........................................................................................................................ 33

Criteria for the Proper Selection of String Fuses ......................................................... 33

Effects of using underrated fuses ................................................................................ 33

Fuse Recommendations - Application Example .......................................................... 33

Fuses ...........................................................................................................................34

Ungrounded System: Connecting Solar Module Strings with a Cable Cross Section > 16

mm² .................................................................................................................................. 35

General ........................................................................................................................ 35

Additional Required Components ................................................................................ 35

Ungrounded System: Connecting Solar Module Strings with a Cable Cross Section >

16 mm²......................................................................................................................... 35

Solar Module Ground at Negative Pole: Connecting Solar Module Strings ..................... 38

General ........................................................................................................................ 38

Cable Cross Section of Solar Module Strings .............................................................. 38

Solar Module Ground at Negative Pole: Connecting Solar Module Strings ................. 38

Selecting String Fuses ................................................................................................. 40

Using String Fuses in Fronius IG Plus ......................................................................... 40

Criteria for the Proper Selection of String Fuses.............................................................. 41

General ........................................................................................................................ 41

Criteria for the Proper Selection of String Fuses ......................................................... 41

Effects of using underrated fuses ................................................................................ 41

Fuse Recommendations - Application Example .......................................................... 41

Fuses ...........................................................................................................................42

Solar Module Ground at Negative Pole: Connecting Solar Module Strings with a Cable

Cross Section > 16 mm² .................................................................................................. 43

General ........................................................................................................................ 43

Additional Required Components ................................................................................ 43

Solar Module Ground at Negative Pole: Connecting Solar Module Strings with a Cable

Cross Section > 16 mm² .............................................................................................. 44

Solar Module Ground at Negative Pole: Connecting Solar Module Strings with a Cable

Cross Section > 16 mm² .............................................................................................. 45

Solar Module Ground at Negative Pole for Fronius IG Plus............................................. 47

General ........................................................................................................................ 47

Solar Module Ground at Negative Pole ....................................................................... 47

Solar Module Ground at Negative Pole for Fronius IG Plus ........................................ 47

Safety........................................................................................................................... 48

Setting Inverters for Grounded Solar Modules............................................................. 48

Solar Module Ground: Inserting Fuses ........................................................................ 48

Opening Fronius IG Plus for Service/Maintenance ...................................................... 49

3

Solar Module Ground at Positive Pole: Connecting Solar Module Strings ....................... 50

General ........................................................................................................................ 50

Cable Cross Section of Solar Module Strings .............................................................. 50

Solar Module Ground at Positive Pole: Connecting Solar Module Strings................... 50

Selecting String Fuses ................................................................................................. 52

Using String Fuses in Fronius IG Plus ......................................................................... 53

Criteria for the Proper Selection of String Fuses.............................................................. 54

General ........................................................................................................................ 54

Criteria for the Proper Selection of String Fuses ......................................................... 54

Effects of using underrated fuses ................................................................................ 54

Fuse Recommendations - Application Example .......................................................... 54

Fuses ...........................................................................................................................55

Solar Module Ground at Positive Pole: Connecting Solar Module Strings with a Cable

Cross Section > 16 mm² .................................................................................................. 56

General ........................................................................................................................ 56

Additional Required Components ................................................................................ 56

Solar Module Ground at Positive Pole: Connecting Solar Module Strings with a Cable

Cross Section > 16 mm² .............................................................................................. 57

Solar Module Ground at Positive Pole for Fronius IG Plus .............................................. 60

General ........................................................................................................................ 60

Solar Module Ground at Positive Pole ......................................................................... 60

Solar Module Ground at Positive Pole for Fronius IG Plus .......................................... 60

Safety........................................................................................................................... 61

Setting Inverters for Grounded Solar Modules............................................................. 61

Solar Module Ground: Inserting Fuses ........................................................................ 61

Opening Fronius IG Plus for Service/Maintenance ...................................................... 62

Closing Fronius IG Plus ................................................................................................... 63

Closing Fronius IG Plus ............................................................................................... 63

Inserting Option Cards ..................................................................................................... 64

Suitable Option Cards.................................................................................................. 64

Safety........................................................................................................................... 64

Opening Fronius IG Plus ............................................................................................. 64

Inserting Option Cards ................................................................................................. 65

Closing Fronius IG Plus ............................................................................................... 65

Solar Net and Data Interface ....................................................................................... 66

Example ....................................................................................................................... 67

Commissioning ................................................................................................................ 68

Factory Configuration .................................................................................................. 68

Commissioning ............................................................................................................ 68

Operation 69

Fronius IG Plus Device Description ................................................................................. 71

Controls and Indicators ................................................................................................ 71

Display .........................................................................................................................71

Startup Phase .............................................................................................................. 73

Test Procedure............................................................................................................. 73

LED Operating Status .................................................................................................. 75

4

Navigating Around the Display ......................................................................................... 77

Activating Display Illumination ..................................................................................... 77

Accessing Menus......................................................................................................... 77

Selecting a display mode ............................................................................................. 78

Scrolling Between Display Values ................................................................................ 78

Overview of Display Values ......................................................................................... 79

Display Modes ................................................................................................................. 80

Display Modes ............................................................................................................. 80

Overview ...................................................................................................................... 80

Display Values in ‘Now’ Display Mode ............................................................................. 81

Selecting ‘Now’ Display Mode ...................................................................................... 81

Display Values in ‘Now’ Display Mode ......................................................................... 81

Options ........................................................................................................................ 83

Display Values in ‘Day / Year / Total’ Display Mode.......................................................... 84

General ........................................................................................................................ 84

Selecting ‘Day / Year / Total’ Display Mode .................................................................. 84

Display Values in ‘Day / Year / Total’ Display Mode ..................................................... 85

Options ........................................................................................................................ 87

The Setup Menu .............................................................................................................. 88

Default Settings ........................................................................................................... 88

Opening the setup menu ............................................................................................. 88

Scrolling through Menu Options................................................................................... 89

Menu Options in the Setup Menu ................................................................................ 89

Setting and Displaying Menu Options .............................................................................. 92

General Menu Option Settings .................................................................................... 92

Setting the ‘Standby’ Menu Option............................................................................... 92

Setting the ‘CONTRast’ menu option ........................................................................... 93

Setting the ‘LIGHTmode’ menu option......................................................................... 93

Setting the ‘CASH’ Menu Option.................................................................................. 94

Setting the ‘CO2’ Menu Option .................................................................................... 96

Setting the ‘YIELD’ Menu Option ................................................................................. 97

Setting the ‘IG No.’ Menu Option ............................................................................... 100

Setting the ‘DATcom’ Menu Option ............................................................................ 101

Setting the ‘TIME’ Menu Option ................................................................................. 103

Displaying the ‘STATEps’ menu option ...................................................................... 106

Displaying the ‘VERSIon’ menu option ...................................................................... 107

Troubleshooting and Maintenance 111

Status Diagnosis and Troubleshooting............................................................................ 113

Display of Status Messages ........................................................................................113

General Status Messages ...........................................................................................113

Total failure ................................................................................................................. 113

Status Messages for a Fronius IG Plus with Several Power Modules ........................ 114

Status Messages - Class 1 ......................................................................................... 115

Status Messages - Class 3 ......................................................................................... 117

Status Messages - Class 4 ......................................................................................... 119

Status Messages - Class 5 ........................................................................................ 125

Customer Service ...................................................................................................... 128

5

Maintenance .................................................................................................................. 129

Safety......................................................................................................................... 129

General ...................................................................................................................... 129

Operation in Environments with a Strong Formation of Dust ..................................... 129

Opening Fronius IG Plus for Service/Maintenance .................................................... 130

Replacing String Fuses .................................................................................................. 131

Safety......................................................................................................................... 131

Before Installing ......................................................................................................... 131

Replacing Fuses ........................................................................................................ 132

Finally... ...................................................................................................................... 132

Appendix 133

Technical Data ............................................................................................................... 135

Fronius IG Plus 35 ..................................................................................................... 135

Fronius IG Plus 50 ..................................................................................................... 136

Fronius IG Plus 70 ..................................................................................................... 137

Fronius IG Plus 100 ................................................................................................... 138

Fronius IG Plus 120 ................................................................................................... 139

Fronius IG Plus 150 ................................................................................................... 140

Explanation of footnotes ............................................................................................ 140

Relevant Standards and Directives ................................................................................ 141

CE Mark ..................................................................................................................... 141

Parallel Operation of In-Plant Power Generation Systems ........................................ 141

Switching to Prevent Stand-alone Operation ............................................................. 141

Grid Failure ................................................................................................................ 141

Relevant Standards and Directives ............................................................................ 141

Warranty and Disposal................................................................................................... 142

Warranty Provisions and Liability............................................................................... 142

Exclusions to Warranty Claims .................................................................................. 142

Warranty Claim Requirements................................................................................... 142

Scope of Warranty ..................................................................................................... 142

Warranty Period ......................................................................................................... 143

Proof of Warranty....................................................................................................... 143

Disposal ..................................................................................................................... 143

6

7

General Information

8

9

Safety

WARNING! If the equipment is used or tasks are carried out

incorrectly, serious injury or damage may result. The Fronius IG
Plus should only be installed by trained service personnel in
accordance with technical regulations. It is essential that you
read the „Safety Regulations“ chapter before installation or
before carrying out any maintenance work.

The design and functionality of the Fronius IG Plus provides maximum
safety for both installation and operation.

The Fronius IG Plus provides operator and equipment protection through:
a) galvanic isolation
b) monitoring the mains network

Operator and
Equipment
Protection

Operator and Equipment Protection

Galvanic Isola­tion

The Fronius IG Plus is equipped with a high frequency transformer that
provides galvanic isolation between the DC side and the grid, thus ensu­ring the highest possible safety.

In the event of abnormal conditions in the mains network (e.g. grid discon­nection or interruption), the Fronius IG Plus will stop working immediately
and stop feeding current into the grid.

Mains network monitoring is carried out using:

- Voltage monitoring

- Frequency monitoring

Monitoring the
mains network

10

The Fronius IG Plus solar inverter is a highly sophisticated link between
the solar modules and the public grid.

General

The Fronius IG Plus in the Photovoltaic System

The Fronius IG Plus converts the direct current (DC) generated by the
solar modules into alternating current (AC). This alternating current is fed
synchronously into your house’s mains voltage network or the public grid.

Important The Fronius IG Plus was developed exclusively for use with
grid-connected photovoltaic systems. Power generation independent from
the public grid is not possible.

Converting DC
to AC current

The operation of Fronius IG Plus is fully automatic. As soon as enough
power is being generated after sunrise, the control module begins monito­ring the mains voltage and frequency. When the sunlight has reached a
sufficient level of irradiation, the photovoltaic inverter will start the feed in
operation.

The Fronius IG Plus operates in such a way as to ensure that the maxi­mum power possible is obtained from the solar modules.
This function is called „Maximum Power Point Tracking“ (MPPT).

As soon as the available power is no longer sufficient to feed into the grid
after dusk, the Fronius IG Plus disconnects completely from the grid and
shuts down. All settings and data are saved.

Fully Auto­matic Operati­onal Manage­ment

Tasks The main tasks of the Fronius IG Plus include:

- Converting DC to AC current

- Fully automatic operational management

- Display function and data communication

The display on the inverter is the interface between the inverter and the
operator. The design of the display is geared towards simple operation
and making system data available as long as the inverter operates.

Display Func­tion and Data
Communicati­on

11

Display Func­tion and Data
Communicati­on

(continued)

The Fronius IG Plus has a basic function for providing minimum and
maximum values on a daily and total basis. These values are shown on
the display.

The display also provides the option of showing the following weather
data:

- 2 different temperature values (e.g. temperature at the solar modules,
outside temperature in the shade)

- Solar radiation

A wide range of data communication elements also enables a multitude of
logging and display options.

The Fronius IG Plus is designed for various system upgrades, e.g.:

- Upgrades that enable Fronius IG Plus to communicate with external
system upgrades as well as other inverters

- Datalogger (for using a PC to record and manage data from your
photovoltaic system), includes Datalogger and modem interface

- Various large-format displays

- Living room display

- Actuators (e.g.: relays, alarms)

- Sensors (e.g. for temperature, irradiance, energy measurement, etc.)

- Interface cards

System upgrades are available as plug-in cards.

In the event that the heat cannot be dissipated even with the fan working
at maximum speed, a process known as power derating is initiated in
order to protect the Fronius IG Plus (e.g. in switch boxes that do not have
an appropriate heat dissipation system).

A power derating system briefly restricts the output from the Fronius IG
Plus in order to prevent the temperature from exceeding the permissible
value.
The Fronius IG Plus will continue to operate without any downtimes for as
long as possible.

System Up­grades

Inverter Coo­ling using
Forced-air
Ventilation

Power Dera­ting

The temperature-controlled and speed-controlled ball bearing fan of the
Fronius IG Plus provides:

- optimal inverter cooling

- higher efficiency

- cooler components, thus improving service life

- lowest possible energy consumption and lowest possible noise level

12

13

Installation and Startup

14

15

Fronius IG Plus Installation and Connection

Fronius IG
Plus Setup

Connection area

Power module(s)

Overview ‘Fronius IG Plus Installation and Connection’ contains the following sec-

tions:

- Fronius IG Plus Connection Options

- Target Punch-outs on the Fronius IG Plus

- Location Selection

- Fronius IG Plus Installation

- Connecting the Fronius IG Plus to the Public Grid (AC)

- Connecting Solar Module Strings to the Fronius IG Plus (DC)

- Closing Fronius IG Plus

Connection area and power module on the
Fronius IG Plus

The power module and the connec­tion area are separated from each
other for delivery.

16

Fronius IG Plus Connection Options

Fronius IG
Plus Connec­tion Options

Connections on the Fronius IG Plus

Item Description

(1) Fuse cover (6 x for string fuses, 1 x for the solar module ground

fuse)
(2) Jumper slot SMON
(3) DC- main switch cable
(4) 6 DC+ fuse holders
(5) Jumper slot SMOFF
(6) DC- main switch cable
(7) Plug-in card for country setup (IG Brain)
(8) Open card slot for an option card
(9) Open card slot for a second option card
(10) Open card slot for a third option card
(11) Fuse holder for the solar module ground
(12) Strain relief device for plug-in card cable
(13) AC-side terminals

(11)

(13)

(12)

(2)(3)(1) (9)(8)(4) (7)(5)

(15)(16) (14)(17)(18)

(10)(6)

17

Fronius IG
Plus Connec­tion Options

(continued)

Item Description

(14) Metric screw joint M32 or M40 (AC connection)
(15) 6 DC- terminals
(16) Strain relief device for solar module strings
(17) 6 DC+ terminals
(18) DC main switch

18

Target Punch­outs for Cable
Inputs

The Fronius IG Plus contains several target punch-outs of different sizes.
When punched out, the openings are used for the inputs of various ca­bles.

Target Punch-outs on the Fronius IG Plus

General

Target punch-outs on the back and inside base of the Fronius IG Plus

Item Description

(1) 4 back cable inputs:

Diameter 34.5 / 28 and 28 / 22.5 mm

Cable openings that lead through the back to the inverter

NOTE When using back cable inputs:

- seal all open spaces at IP45

- use an edge guard to avoid damaging the cable

(2) 2 cable inputs for metric screw joint M32

(for DC cable with a cable cross section > 16 mm²)
(3) 12 cable inputs for 6 solar module strings DC

(for a cable diameter of 5 - 9.2 mm)
(4) Cable input for plug-in card cable

(3)

(4)

(2)

(1)

19

Target Punch­outs for Cable
Inputs

(continued)

NOTE

- The target punch-outs made from plastic as well as the larger
ones made from metal should only be removed from the
outside in.

- The smaller target punch-outs made from metal should be
removed from the inside out.

- You should only remove the number of punch-outs required
for the available cables (e.g. 6 openings for 3 module strings)

The plastic punch-outs are also equipped with center holes so that they
can be drilled out if required.

20

Location Selection

Please note the following criteria when selecting a location for the Fronius
IG Plus:

It should only be installed on a stable, vertical wall
Max. ambient temperatures: -20 °C / +50 °C (-4 °F / +122.00 °F)
For use at altitudes above sea level: up to 2000 m

General Loca­tion Selection

300 mm

50 mm

200 mm

The air flow direction within the inverter runs from right to left (cold air
intake right, warm air exhaust left).

If the Fronius IG Plus is installed in a switch box (or similar enclosed
area), then forced-air ventilation must be provided to ensure adequate
heat dissipation.

The Fronius IG Plus is designed for installation both indoors and
outdoors.

- There should be a 200 mm (7.8 in) clearance on both sides of the
Fronius IG Plus for the cool air vents.

- Maintain a side distance of 300 mm (11.8 in) between individual Froni­us IG Plus units.

21

Because of its IP 44 protection class, the Fronius IG Plus is not
susceptible to water spray from all directions

In orderto protect the Fronius IG Plus display, it should not be exposed to
direct sunlight. Ideally, the Fronius IG Plus should be installed in a
protected location, e.g. near the solar modules or under a roof overhang.

Location Se­lection for
Outside Instal­lation

Do not install the Fronius IG Plus near living areas because it may emit a
small amount of noise under certain operating conditions.

Do not install the Fronius IG Plus in:

- Rooms with a large formation of dust

- Rooms with a large formation of dust with conductive particles (e.g.

iron filings)

- Rooms with corrosive gases, acids or salts

- Rooms where there is an increased risk of accidents, e.g. from farm

animals (horses, cattle, sheep, pigs, etc.)

- Stables or adjoining areas

- Storage areas for hay, straw, chaff, animal feed, fertilizers, etc.

- Storage or processing areas for fruit, vegetables or winegrowing pro-

ducts

- Rooms used in the preparation of grain, green fodder or animal feeds

- Greenhouses

Location Se­lection for
Inside Installa­tion

22

Fronius IG Plus Installation

Attaching Wall
Bracket

Important! Depending on the surface, different dowels and screws may

be required for installing the wall bracket. These dowels and screws are
not part of the scope of delivery for the Fronius IG Plus. The installer is
responsible for selecting the proper dowels and screws.

NOTE The Fronius IG Plus should only be installed upright on the
wall.

3

22

3

4

1

6

5

4

2

6 x

4

6

7

1

5

23

Only for Fronius IG Plus 120 / 150:

Because of logistical limits, the wall bracket for the Fronius IG Plus 120
and Fronius IG Plus 150 is divided into two parts.

- Assemble wall bracket as per work step 1

Important! When installing the wall bracket care should be taken to ensu­re that the display mark (*) on the wall bracket remains at eye level.

1

1

1

2

2

3

3

2

min. 50 mm
min. 2 in.

2

1

1

7

3

5

4

6

(*)