Fronius IG Plus 3.0-1, IG Plus 3.8-1, IG Plus 6.0-1, IG Plus 7.5-1, IG Plus 10.0-1 Operating Instructions Manual

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Fronius IG Plus

3.0-1 / 3.8-1 / 5.0-1 / 6.0-1 / 7.5-1

10.0-1 / 11.4-1 / 11.4-3 / 12.0-3

42,0426,0071,EA 042008

Operating Instructions

USA

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 result s.

Introduction

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IMPORTANT SAFETY

INSTRUCTIONS

SAVE THESE INSTRUCTIONS

General This manual contains important instructions for the Fronius IG Plus, that

must be followed during installation and maintenance of the inverter. The Fronius IG Plus is designed and tested according to international

safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the Fronius IG Plus. To reduce the risk of personal injury and to ensure the safe installation and operation of the Fronius IG Plus, you must carefully read and follow all instructions and safety instructions in this manual.

Safety Instructions

The following section “Safety Instructions“ contains different Warnings. A Warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the Fronius inverter and/or other equipment connected to the Fronius inverter or personal injury.

All electrical installations must be made in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

For installations in Canada the installations must be done in accordance with applicable Canadian standards.

Electrical installations

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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.

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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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

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

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.

Y our safety is at st ake.

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 fat al. 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

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 p art s).

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.

Qualified Personnel

(continued)

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.

Care must be taken during installation to ensure that there is no electromagnetic interference with electrical and electronic equipment.

EMC Precautions

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 authori-

zed specialist before the device is turned on. Never bypass or disable safety equipment.

Safety Precautions in NormalOperation

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Equipment with the CE marking fulfils the basic requirements of the Guideline Governing Low-Volt age 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.

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

Table of Contents

General Information 7

Protection of persons and equipment ................................................................................ 9

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

Protection of persons and equipment ............................................................................ 9

Galvanic isolation........................................................................................................... 9

Monitoring the grid ......................................................................................................... 9

Information for Field adjustable trip points................................................................... 10

FCC Compliance ......................................................................................................... 10

Ground Fault Detector / Interruptor.............................................................................. 10

Standards and Regulations .......................................................................................... 10

Product listings and compliance .................................................................................. 10

The Fronius IG Plus Unit in the PV System ......................................................................11

General information ......................................................................................................11

Tasks.............................................................................................................................11

Converting DC into AC current......................................................................................11

Fully automatic operation management........................................................................11

Display function and data communication ................................................................... 12

System Upgrades ........................................................................................................ 12

Forced ventilation ........................................................................................................ 12

Power Derating ............................................................................................................ 13

Installation and Startup 15

Fronius IG Plus Installation and Connection.................................................................... 1 7

Safety........................................................................................................................... 17

Fronius IG Plus Construction....................................................................................... 17

Connection Diagramm ................................................................................................. 18

Overview...................................................................................................................... 18

Fronius IG Plus Connection Options................................................................................ 19

Fronius IG Plus Connection Options ........................................................................... 19

Knockouts on the Fronius IG Plus.................................................................................... 21

General ........................................................................................................................ 21

Knockouts for Wire Inputs ............................................................................................ 21

Choosing the Location ..................................................................................................... 23

Choosing the location general ..................................................................................... 23

Choosing a Location for Inside Installation .................................................................. 23

Choosing a Location for Outside Installation ............................................................... 2 4

Fronius IG Plus Installation .............................................................................................. 25

General ........................................................................................................................ 25

Assembling the Wall Bracket....................................................................................... 25

Recommended Screws for Wall Bracket Assembly..................................................... 25

Attaching the Wall Bracket - Mounting height.............................................................. 25

Attaching the Wall Bracket to a Concrete or Brick Wall ............................................... 2 6

Attaching the Wall Bracket to a Wooden Wall ............................................................. 26

Attaching the Wall Bracket to a Metal Carrier.............................................................. 27

Fronius IG Plus Installation.......................................................................................... 27

Installation of Several Inverters.................................................................................... 28

Connecting the Fronius IG Plus to the Public Grid (AC) .................................................. 29

Overview of Available Power Grids .............................................................................. 29

Monitoring the Grid ...................................................................................................... 31

Schemes with more than one inverter ......................................................................... 31

AC-side and Grounding Terminals ............................................................................... 32

Cross Section of AC Wires .......................................................................................... 33

Safety........................................................................................................................... 33

Connecting the Fronius IG Plus to the Public Grid (AC) .............................................. 34

Connecting Grounding Electrode Wire ........................................................................ 35

Recommendation for the AC-side over current protection........................................... 3 5

Additional External AC and/or DC Disconnect............................................................. 35

Connecting Solar Module Strings to the Fronius IG Plus (DC) ........................................ 36

General Information About Solar Modules................................................................... 36

Safety........................................................................................................................... 36

DC-Terminals............................................................................................................... 37

Overview...................................................................................................................... 37

Connecting Solar Module Strings..................................................................................... 38

Solar Module Ground................................................................................................... 38

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

Connecting Solar Module Strings ................................................................................ 39

Inserting String fuses into the Fronius IG Plus............................................................. 4 1

Criteria for the Proper Selection of String Fuses.............................................................. 4 2

DC disconnect requirements........................................................................................ 42

General........................................................................................................................ 42

Criteria for the Proper Selection of String Fuses ......................................................... 42

Effects of using underrated fuses ................................................................................ 42

Fuse Recommendations - Application Example .......................................................... 43

Fuses ...........................................................................................................................43

Additional Required Components ................................................................................ 44

Solar Module Ground................................................................................................... 44

Connecting combined Solar Module Strings using a DC String Input Combiner.............. 44

General........................................................................................................................ 44

Connecting combined Solar Module Strings using a DC String Input Combiner ......... 45

Safety........................................................................................................................... 45

Solar Module Ground at Positive Pole: Connecting Solar Module Strings....................... 48

General........................................................................................................................ 48

Wire Cross Section of Solar Module Strings................................................................ 48

Solar Module Ground at Positive Pole......................................................................... 48

Solar Module Ground at Positive Pole: Connecting Solar Module Strings................... 4 9

Solar Module Ground at Positive Pole: Inserting String fuses into the

Fronius IG Plus ............................................................................................................ 51

Criteria for the Proper Selection of String Fuses.............................................................. 5 3

DC disconnect requirements........................................................................................ 53

General........................................................................................................................ 53

Criteria for the Proper Selection of String Fuses ......................................................... 53

Effects of using underrated fuses ................................................................................ 53

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

Fuses ...........................................................................................................................54

Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings

using a DC String Input Combiner.................................................................................... 55

General ........................................................................................................................ 55

Additional Required Components ................................................................................ 55

Solar Module Ground at Positive Pole......................................................................... 55

Solar Module Ground at Positive Pole: Connecting combined Solar Module

Strings using a DC String Input Combiner ................................................................... 56

Safety........................................................................................................................... 56

Attaching Power Stage Sets and Closing the Fronius IG Plus ......................................... 59

Preparation .................................................................................................................. 59

Opening the Fronius IG Plus for Service/Maintenance................................................ 59

Attaching Power Stage Sets And Closing the Fronius IG Plus..................................... 5 9

Start up Operation............................................................................................................ 60

Factory pre-set configuration ....................................................................................... 60

Requirements for Starting up Operation ...................................................................... 60

Start up Operation........................................................................................................ 60

Selecting the public grid............................................................................................... 61

Startup Phase at Startup Operation............................................................................. 63

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

Suitable Option Cards.................................................................................................. 65

Safety........................................................................................................................... 65

Opening the Fronius IG Plus ....................................................................................... 65

Inserting Option Cards................................................................................................. 66

Connecting Option Cards, Laying Data Communication Wires ................................... 66

Solar Net and Data Interface ....................................................................................... 68

Closing the Fronius IG Plus ......................................................................................... 68

Example....................................................................................................................... 69

Operation 71

Product description Fronius IG Plus................................................................................. 73

Keys and Symbols ....................................................................................................... 73

Display .........................................................................................................................73

Test Procedure ............................................................................................................. 75

Startup phase............................................................................................................... 75

Operating Status LED .................................................................................................. 77

Operating scheme - the Display....................................................................................... 79

Activating ..................................................................................................................... 79

Display Illumination...................................................................................................... 79

Accessing Menus......................................................................................................... 79

Selecting a display mode............................................................................................. 80

Scrolling Between Display functions............................................................................ 80

Overview of Display Values ......................................................................................... 81

Display Modes ................................................................................................................. 82

Display Modes ............................................................................................................. 82

Overview...................................................................................................................... 82

Within display mode ‘Now’ displayed data....................................................................... 83

Selecting display mode ‘Now’ ...................................................................................... 83

Within display mode ‘Now’ displayed data................................................................... 83

Options ........................................................................................................................ 85

Within display modes ‘Day / Year / Total’ displayed data ................................................. 86

General........................................................................................................................ 86

Selecting display modes ‘Day / Year / Total’................................................................. 86

Within display modes ‘Day / Year / Total’ displayed data ............................................. 87

Options ........................................................................................................................ 89

The Setup Menu .............................................................................................................. 90

Default Settings ........................................................................................................... 90

Enter the setup menu .................................................................................................. 90

Scrolling among menu items ....................................................................................... 91

Menu Items in the Setup Menu.................................................................................... 91

Setting and Displaying Menu Items.................................................................................. 94

Menu Items Settings - General .................................................................................... 94

Setting Menu Item ‘Standby’ ........................................................................................ 94

Setting menu item ‘CONTRast’.................................................................................... 95

Setting menu item ‘LIGHTmode’.................................................................................. 9 5

Setting menu item ‘CASH’ ........................................................................................... 96

Setting menu item ‘CO2’.............................................................................................. 98

Setting menu item ‘YIELD’........................................................................................... 99

Setting menu item ‘IG-NR’ ......................................................................................... 102

Setting menu item ‘DATcom’...................................................................................... 103

Setting menu item ‘TIME’........................................................................................... 104

Displaying menu item ‘STATEps’ ............................................................................... 107

Displaying menu item ‘VERSIon’ ............................................................................... 108

Troubleshooting and Maintenance 113

Status Diagnosis and Troubleshooting............................................................................115

Displaying Status Codes ............................................................................................115

Normal operation status codes ...................................................................................115

Total failure .................................................................................................................115

Status Codes on Fronius IG Plus with several power stage sets................................116

Class 1 Status Codes .................................................................................................116

Class 2 Status Codes .................................................................................................118

Class 3 Status Codes .................................................................................................119

Class 4 Status Codes ................................................................................................ 121

Class 5 Status Codes ................................................................................................ 128

Customer Service ...................................................................................................... 130

Maintenance .................................................................................................................. 131

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

General...................................................................................................................... 131

Operation in Dusty Environments .............................................................................. 132

Opening Fronius IG Plus for Service/Maintenance.................................................... 132

Replacing String Fuses.................................................................................................. 133

Safety......................................................................................................................... 133

Preparation ................................................................................................................ 133

Replacing String Fuses.............................................................................................. 134

Closing Fronius IG Plus ............................................................................................. 135

Replacing GFDI Fuse..................................................................................................... 136

Safety......................................................................................................................... 136

Preparation ................................................................................................................ 136

Replacing GFDI Fuse ................................................................................................ 137

Closing Fronius IG Plus ............................................................................................. 138

Appendix 139

Technical Data ............................................................................................................... 141

Fronius IG Plus 3.0-1................................................................................................. 141

Fronius IG Plus 3.8-1................................................................................................. 143

Fronius IG Plus 5.0-1................................................................................................. 145

Fronius IG Plus 6.0-1................................................................................................. 147

Fronius IG Plus 7.5-1................................................................................................. 149

Fronius IG Plus 10.0-1............................................................................................... 151

Fronius IG Plus 11.4-1 ............................................................................................... 153

Fronius IG Plus 11.4-3 ............................................................................................... 155

Fronius IG Plus 12.0-3............................................................................................... 157

Field adjustable trip points ......................................................................................... 159

Relevant Standards and Directives ................................................................................ 160

Relevant Standards and Directives............................................................................ 160

Grid Failure ................................................................................................................ 160

Warranty and Disposal................................................................................................... 161

FRONIUS USA limited 10-Year Warranty .................................................................. 161

Policy and procedure for warranty returns and repairs .............................................. 161

Disposal of obsolete equipment - Recycling.............................................................. 162

General Information

Safety

Protection of persons and equipment

WARNING! Incorrect operation and work performed incorrectly

can cause serious injury & damage! Only qualified staff are authorized to install your Fronius IG Plus and only within the scope of the respective technical regulations. Do not start operation or carry out maintenance work before you have read the chapter ‘Safety Instructions’!

The design and function of the Fronius IG Plus unit offers a maximum level of safety, both during installation as well as in operation.

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

Protection of persons and equipment

Galvanic isolation

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

Whenever conditions in the electric grid are inconsistent with standard conditions (for example grid switch-off, interruption, etc.), your Fronius IG Plus unit will immediately stop operating and interrupt the supply of power into the grid.

Monitoring the grid

WARNING! An electrical shock can be fatal. Danger from grid

voltage and DC voltage from solar modules.

- The connection area should only be opened by a licensed electrician.

- The separate power stage set area should only be disconnected from the connection area after first being disconnected from the grid power.

- The separate power stage set area should only be opened by Fronius-trained service personnel.

Never work with live wires! Prior to all connection work, make sure that the AC and DC wires are not charged.

FCC Compliance

This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Ground Fault Detector / Interruptor

Your Fronius IG Plus unit complies with the requirements for the following standards "Inverters, converters and controllers for use in independent power systems":

- UL1741-2005

- IEEE 1547-2003

- IEEE 1547.1

- ANSI / IEEE C62.41

- C22.2 No. 107.1-01 (Sep. 2001) The ground-fault detection and interruption is in compliance with NEC 690

building code requirements.

The respective conformity declarations can be found in the appendix to these operating instructions.

Standards and Regulations

Product listings and compliance

The Fronius IG Plus unit is provided with field adjustable trip points. For further information please contact Fronius technical support E-Mail: pv-ussupport@fronius.com.

Information for Field adjustable trip points

Monitoring the grid

(continued)

Your Fronius IG Plus unit determines the grid’s status by:

- monitoring voltage

- monitoring frequency

- monitoring islanding conditions

The Fronius IG Plus is equipped with a ground fault detection and interruption (GFDI) circuit as required by UL 1741 and the National Electrical code. Depending on the system configuration either the PV array’s negative or positive conductor is connected to the grounding system in the inverter. If a ground fault occurs in the DC wiring, the inverter disconnects from the grid.

The solar inverter Fronius IG Plus is the highly complex link between solar modules and the grid.

General information

The Fronius IG Plus Unit in the PV System

The Fronius IG Plus unit transforms the direct current generated by the solar modules into alternating current. This alternating current is fed into your home system or into the public grid and synchronized with the voltage that is used there.

Important The Fronius IG Plus has been designed exclusively for use in grid connected photovoltaic systems. It cannot generate electric power independent from the grid.

Converting DC into AC current

The Fronius IG Plus is fully automatic. Starting at sunrise, as soon as the solar modules generate enough power, the automatic control unit starts monitoring voltage and frequency. As soon as there is a sufficient level of irradiance, your solar inverter starts feeding energy to the grid.

The control system of the Fronius IG Plus unit ensures that the maximum possible power output is drawn from the solar modules at all times. This function is called MPPT (Maximum Power Point Tracking).

Fully automatic operation management

Tasks The main tasks of the Fronius IG Plus include:

- Converting DC into AC current

- Fully automatic operation management

- Display function and data communication

PV array

Fronius IG Plus

Main AC Load Center

Energymeter

Fully automatic operation management

(continued)

As dusk starts and there is no longer sufficient energy available to feed power into the grid, the Fronius IG Plus unit shuts down the grid connection completely and stops operating. All settings and data recorded are saved.

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.

The Fronius IG Plus is equipped with a basic logging function to monitor minimum and maximum data on a daily and a cumulative basis. These values are shown on the display.

There is also an option to allow the reading of the following weather data on the display:

- two different temperature readings (for example, temperature at the solar modules as well as the outside temperature)

- irradiance

A wide choice of data communication products allows for many possibilities of recording and viewing data.

Display function and data communication

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 and modem interface, Ethernet/Internet connection (for using a PC to record and manage data from your photovoltaic system)

- Various large-format displays

- Living room display (Fronius Personal Display)

- Sensors (e.g. for temperature, irradiance, energy meter, wind speed)

- Interface cards

System upgrades are available as plug-in cards or external boxes.

System Upgrades

Forced ventilation

The temperature controlled, variable speed fan with ball bearing support of the Fronius IG Plus provides:

- optimal inverter cooling

- efficiency increases

- cooler components, thus improving service life

- least possible energy consumption and noise level

Should there be insufficient heat dissipation in spite of the fan operating at maximum speed (for example inadequate heat transfer away from the heat sinks) the power will be derated for protection of the Fronius IG Plus unit.

Derating the power reduces the output of the Fronius IG Plus unit for a short period sufficient to ensure that the temperature will not exceed the admissible limit. Your Fronius IG Plus unit will remain ready for operation as long as possible without any interruption.

Power Derating

Inst allation and S tartup

Fronius IG Plus Construction

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

Safety

WARNING! An electrical shock can be fatal. Danger from grid

voltage and DC voltage from solar modules.

- The connection area should only be opened by a licensed electrician.

- The separate power stage set area should only be disconnected from the connection area after first being disconnected from the grid power.

- The separate power stage set area should only be opened by Fronius-trained service personnel.

Never work with live wires! Prior to all connection work, make sure that the AC and DC wires are not charged.

Fronius IG Plus Installation and Connection

Connection area

Power stage set(s)

Connection area and power stage set on the Fronius IG Plus

WARNING! Incorrect operation and work performed incorrectly can cause serious injury & damage! Only qualified staff are authorized to install your Fronius IG Plus and only within the scope of the respective technical regulations. Do not start operation or carry out maintenance work before you have read the chapter ‘Safety Instructions’!

Fronius IG Plus

Connection Diagramm

Energymeter

AC distribution panel

DC disconnect

DC terminal block String fuses

DC +

DC -

PV frame ground

L1 L2

Grounding terminal

Grounding electrode terminal *

L1 N**

L3***

Main grounding system

* may be required by local authorities ** may be required depending on grid configuration *** depending on inverter type

Lockable AC disconnect switch

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

tions:

- Fronius IG Plus Connection Options

- Knockouts on the Fronius IG Plus

- Choosing the Location

- Fronius IG Plus Installation

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

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

- Attaching Power Stage Sets and Closing the Fronius IG Plus

Connections on the Fronius IG Plus

Item Description

(1) Jumper slot SMON (2) DC+ main switch wire (3) 6 x fuse holder with fuse cover, for stringfuses (4) Jumper slot SMOFF (5) Plug-in card IG Brain (6) Open card slot for an option card (7) Open card slot for an option card (8) Plug-in card NL-MON

Only at Fronius IG Plus 12.0-3 WYE 277: Open card slot for an

option card (9) DC- main switch wire (10) 6 DC- terminals (11) fuse holder with fuse cover, for GFDI-fuse

(1) (7)(6)(3) (5)(4)(2)

(9) (10)

(8)

(11)(12)(13)(14)(15)(16)

Fronius IG Plus Connection Options

Item Description

(12) AC-side terminals (13) 3 x grounding terminals (14) Strain relief for solar module strings (15) 6 DC+ terminals (16) DC main switch

Fronius IG Plus Connection Options

(continued)

The Fronius IG Plus contains several knockouts of different sizes. When knocked out, the openings are used for the inputs of various wires.

Knockouts on the lefthand side

Item Description

(1) Knockout, diameter 3/4 in. / 1 in.

e.g. for DC wire, surge arrester (2) Knockout, diameter 1/2 in. / 3/4 in.

only for data wires (3) Knockout, diameter 3/4 in. / 1 in.

e.g. for AC wire, surge arrester (4) Knockout, diameter 1/2 in. / 3/4 in.

e.g. for AC wire, surge arrester

(2)

(1)

Knockouts on the righthand side

(3)

(1)

(3)(2)

(4)(1)(5) (3)

(4)(3)(5)(1)

(2)

Knockouts on the underside Knockouts on the backside

(6)

(7)

Knockouts for Wire Inputs

Knockouts on the Fronius IG Plus

General

Knockouts for Wire Inputs

(continued)

NOTE When using back wire inputs:

- seal on enclosure NEMA 3R before outside operation

NOTE

- The larger knockouts should only be removed from the outside in.

- The smaller knockouts should be removed from the inside out.

- Only remove the number of knockouts required for the available wire inputs

CAUTION! Danger of damaging the plastic base when removing the knockouts on the bottom.

- Before removing, remove the 3 fixing screws (6) and (7)

- Remove the metal insert from the plastic base

- Remove the required knockouts

- Replace the metal insert into the plastic base

- Secure the metal insert using the 3 fixing screws (6) and (7)

Item Description

(5) Knockout, diameter 1/2 in. / 3/4 in.

e.g. for DC wire, surge arrester (6) FTX 25 fixing screws (7) FTX 25 fixing screw

During certain operation phases the Fronius IG Plus unit may produce a slight noise. For this reason it should not be installed in an occupied living area.

Do not install the Fronius IG Plus in:

- areas with large amounts of dust

- areas with large amount of conducting dust particles (e.g. iron filings)

- areas with corrosive gases, acids or salts

- areas 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

Choosing a Location for Inside Installation

Choosing the Location

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

Only vertical installation Max. ambient temperatures: -4 °F / +122 °F (-20 °C / +50 °C) Keep a distance of 8 in. (20 cm) minimum between each inverter or

anything to the right or left of the inverters such as walls or DC and AC disconnects. For optimal airflow and cooling efficiency in hot climates Fronius recommend a distance of 10 - 12 in. (25 - 30 cm).

When installing more than one unit, keep a distance of 12 in. (30 cm) between each Fronius IG Plus.

Keep a clearance of 3 ft. (66 cm) minimum below the unit, according to NEC for code compliant disconnect location

The air flow direction within the inverter is from right to left (cold air intake on right, hot air exit on left).

When installing the Fronius IG Plus unit in a switch panel cabinet (or similar closed environment) it is necessary to make sure that the hot air that develops will be discharged by forced ventilation.

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

Choosing the location general

NEMA 3R protection means that the Fronius IG Plus can be exposed to moisture. However, we recommend that direct moisture and direct water spray such as a sprinkler be avoided, if possible.

In order to protect the display, the Fronius IG Plus 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.

Choosing a Location for Outside Installation

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.

General

Because of logistical limits, the wall bracket for these inverters is divided into two parts.

- Assemble wall bracket as per step 1

Only for Fronius IG Plus 10.0-1 / 11.4-1 / 11.4-3 / 12.0-3:

Recommended Screws for Wall Bracket Assembly

Fronius IG Plus Installation

Assembling the Wall Bracket

In most cases, you should use 1/4 in. or 5/16 in. stainless steel or aluminium screws capable of supporting 31 lbs. (Fronius IG Plus 3.0-1 / 3.8-1), 57 lbs. (Fronius IG Plus 5.0-1 / 6.0-1 / 7.5-1), or 82 lbs. (Fronius IG Plus

10.0-1 / 11.4-1 / 11.4-3 / 12.0-3) of inverter weight.

Attaching the Wall Bracket Mounting height

Important NEC requires that the DC disconnect be mounted between

3 ft. and 6 1/2 ft. from the ground if it is to be used as a code-compliant disconnect. The DC disconnect is in the lower left part of the inverter. Also, the cut out segment marked (*) in the following drawings represents the placement of the inverter display. Use this to ensure a comfortable display height for easy reading.

6 x

Important The cut out segment marked (*) represents the placement of the inverter display. Use this to ensure a comfortable display height for easy reading.

(*)

Attaching the Wall Bracket to a Concrete or Brick Wall

Attaching the Wall Bracket to a Wooden Wall

(*)

Important The cut out segment marked (*) represents the placement of the inverter display. Use this to ensure a comfortable display height for easy reading.

Fronius IG Plus Installation

Attaching the Wall Bracket to a Metal Carrier

4 x

(*)

Important The cut out segment marked (*) represents the placement of the inverter display. Use this to ensure a comfortable display height for easy reading.

NOTE When installing using a metal carrier, the Fronius IG Plus should not be exposed to rainwater or water spray at the back. Ensure proper rainwater or spray water protection.

Fronius IG Plus Installation

(continued)

Installation of Several Inverters

Several inverters can be easily installed and connected next to each other using the side knockouts on the Fronius IG Plus, e.g.:

DC DC DC

DATCOM = data communication

NOTE All electrical installations must be made in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

For installations in Canada the installations must be done in accordance with applicable Canadian standards.

DATCOM DATCOM

AC AC

CAUTION! Danger of injury by falling equipment. Attach the connection area of the inverter to the wall bracket using the 2 screws removed from the wall bracket in step 1.

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

Overview of Available Power Grids

120 °

208 V

L2L3

Fronius IG Plus inverters can be connected to the following power grids:

Public Grid Inverter

208 V Delta

Fronius IG Plus 3.0-1 Fronius IG Plus 3.8-1 Fronius IG Plus 5.0-1 Fronius IG Plus 6.0-1 Fronius IG Plus 7.5-1 Fronius IG Plus 10.0-1 Fronius IG Plus 11.4-1 Fronius IG Plus 11.4-3

120 V

120 °

208 V

208 V Delta: 120 V WYE

Fronius IG Plus 3.0-1 Fronius IG Plus 3.8-1 Fronius IG Plus 5.0-1 Fronius IG Plus 6.0-1 Fronius IG Plus 7.5-1 Fronius IG Plus 10.0-1 Fronius IG Plus 11.4-1 Fronius IG Plus 11.4-3

240 V

120 °

L2L3

240 V Delta

Overview of Available Power Grids

(continued)

Public Grid Inverter

240 V: 120 V Stinger

240 V

120 °

120 V120 V

240 V: 120 V Split phase

Fronius IG Plus 3.0-1 Fronius IG Plus 3.8-1 Fronius IG Plus 5.0-1 Fronius IG Plus 6.0-1 Fronius IG Plus 7.5-1 Fronius IG Plus 10.0-1 Fronius IG Plus 11.4-1

180 °

120 V 120 V

240 V

L1 L2

Fronius IG Plus 3.0-1 Fronius IG Plus 3.8-1 Fronius IG Plus 5.0-1 Fronius IG Plus 6.0-1 Fronius IG Plus 7.5-1 Fronius IG Plus 10.0-1 Fronius IG Plus 11.4-1

480 V Delta: 277 V WYE

277 V

120 °

480 V

480V

480 V

Fronius IG Plus 3.0-1 Fronius IG Plus 3.8-1 Fronius IG Plus 5.0-1 Fronius IG Plus 6.0-1 Fronius IG Plus 7.5-1 Fronius IG Plus 10.0-1 Fronius IG Plus 11.4-1

Fronius IG Plus 12.0-3

NOTE For optimal functioning of grid monitoring the resistance in the leads to the AC side connection terminals must be as low as possible. The AC conductor resistance between the Fronius IG Plus unit and the building’s distribution panel should not exceed 0.5 Ohm.

Monitoring the Grid

For larger photovoltaic schemes it is possible to connect several Fronius IG Plus units in parallel without any problems. To ensure symmetrical feeding, connect the inverters uniformly to all phases.

NOTE The Fronius IG Plus is designed to be connected to three phase systems. Utilities generally allow up to 6 kVA of unbalance but check with your utility and try to balance the installation. The connection to the grid shall be done in the following way:

208 V / 240 V:

- Connect Fronius IG Plus No. 1, No. 4, No. 7, ... to L1 and L2

- Connect Fronius IG Plus No. 2, No. 5, No. 8, ... to L2 and L3

- Connect Fronius IG Plus No. 3, No. 6, No. 9, ... to L1 and L3 277 V:

- Connect Fronius IG Plus No. 1, No. 4, No. 7, ... to L1 and N

- Connect Fronius IG Plus No. 2, No. 5, No. 8, ... to L2 and N

- Connect Fronius IG Plus No. 3, No. 6, No. 9, ... to L3 and N

Schemes with more than one inverter

NOTE Do not connect

Fronius IG Plus inverters to the 480 V Delta power grid.

480 V

120 °

L2L3

480 V Delta

Overview of Available Power Grids

(continued)

AC-side and Grounding Terminals

The terminals are designed for the following terminal connections: Grounding Terminals:

(1) Grounding Electrode Terminal (GET)

A grounding electrode conductor may be required by the Authority Having Jurisdiction (AHJ).

(2) Equipment grounding (e.g. grounding of the solar module frame)

The PV array (frame) ground should be connected to the Grounding Terminal. The size for the conductor is usually based on the size of the largest conductor in the DC system.

(3) Grid grounding / Grounding conductor

The Fronius IG Plus Inverter must be connected to the AC ground from the utility via the Ground Terminal.

NOTE

- Use copper wire for all grounding wires.

- Use only solid or stranded wire. Do not use fine stranded wire.

- For appropriate grounding see NEC Section 250.

AC-side Terminals: L1 = Phase conductor L1 L2 = Phase conductor L2 L3 = Phase conductor L3 N = Neutral conductor N

NOTE

The neutral conductor is not bonded to ground internally.

N.C. = Not connected

max. wire cross section AWG 4

(1)

(2)

(3)

AC-side and Grounding T erminals

1-phase inverters 208 V / 240 V

1-phase inverters 277 V

3-phase inverters 208 V / 240 V / 277 V

L2 N

N.C.

GET

Cross Section of AC Wires

WARNING! An electric shock can be fatal. Inadequately sized

electrical components can cause serious injuries to persons and damage to (or loss of) property.

- All electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

- Use minimum AWG 14 to maximum AWG 4, min. 167°F (75°C), copper wire for all AC wiring connections to the Fronius IG Plus. Voltage drop and other considerations may dictate larger size wires be used.

- Use only solid or stranded wire. Do not use fine stranded wire.

Fronius IG Plus AC wire AC wire AC wire

208 V 240 V 277 V

3.0-1 AWG 12 AWG 14 AWG 14

3.8-1 AWG 12 AWG 12 AWG 12

5.0-1 AWG 8 AWG 10 AWG 12

6.0-1 AWG 8 AWG 8 AWG 10

7.5-1 AWG 6 AWG 6 AWG 8

10.0-1 AWG 4 AWG 4 AWG 6

11.4-1 AWG 4 AWG 4 AWG 4

11.4-3 AWG 8 AWG 8 -

12.0-3 - - AWG 12

Minimum cross section of AC wires (all calculations based on ambient temperature of 122 °F / 50 °C).

Safety Only an authorized electrician is permitted to connect this inverter to the

public grid.

WARNING! An electrical shock can be fatal. Danger from grid voltage and DC voltage from solar modules.

- The connection area should only be opened by a licensed electrician.

- The separate power stage set area should only be disconnected from the connection area after first being disconnected from the grid power.

Never work with live wires! Prior to all connection work, make sure that the AC and DC wires are not charged.

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

L1 L2 N

1 phase - 277 V

GET

Conduit

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter

1/2 in.

* Connect grid grounding / grounding conductor to the right terminal ** Tightening torque:

- stranded wires .............. 1.25 ft. lb.

- solid wires..................... 0.81 ft. lb.

Connect the AC wires to the AC-side terminals depending on the power grid and phase quantity of the inverter:

L1 N N.C.

NOTE

Form a min. 4 in. wire loop using all wires.

1 phase - 208 V / 240 V

3 phases - 208 V / 240 V / 277 V

L1 L2 NL3

GET = Grounding Electrode Terminal N.C. = Not connected

Recommendation for the AC-side over current protection

NOTE To reduce the risk of fire, connect only to a circuit provi-

ded with branch circuit overcurrent protection in accordance with the National Electrical Code, ANSI / NFPA 70, at a MAXIMUM of:

Fronius IG Plus Over Current Protection

208 V 240 V 277 V

3.0-1 20 A 20 A 15 A

3.8-1 25 A 20 A 20 A

5.0-1 30 A 30 A 25 A

6.0-1 40 A 35 A 30 A

7.5-1 45 A 40 A 35 A

10.0-1 60 A 60 A 45 A

11.4-1 70 A 60 A 60 A

11.4-3 40 A 35 A -

12.0-3 - - 20 A

Connecting Grounding Electrode Wire

If the photovoltaic system requires a grounding electrode, it should be connected as follows:

NOTE

Form a min. 4 in. wire loop with the wire.

Tightening torque:

stranded wires................1.25 ft. lb.

solid wires ......................0.81 ft. lb.

1/2 in.

Depending on the installation, an additional external AC and/or DC disconnect may be required if the inverter is installed in a location not easily accessible to utility or fire personnel. Consult local authorities for additional information.

Additional External AC and/or DC Disconnect

WARNING! An electrical shock can be fatal. Danger from grid voltage and DC voltage from solar modules.

- The connection area should only be opened by a licensed electrician.

- The separate power stage set area should only be disconnected from the connection area after first being disconnected from the grid power.

- The separate power stage set area should only be opened by Fronius-trained service personnel.

Never work with live wires! Prior to all connection work, make sure that the AC and DC wires are not charged.

The DC main switch is only used to switch off power to the power stage set. When the DC main switch is turned off, the connection area is still energized.

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

In order to select suitable solar modules and get the most efficient use out of the Fronius IG Plus, please note the following points:

- The open circuit voltage increases when temperature decreases (assuming constant irradiance of 1000 W/m²). The inverter opencircuit voltage should never rise above 600 Volts. Whenever the open-circuit voltage of the solar modules exceeds 600 Volts, the Fronius IG Plus unit may be damaged, and all warranty rights will become null and void.

- More exact data for sizing the solar array for the particular location can be obtained using calculation tools such as the Fronius Configuration Tool (available on http://www.fronius-usa.com).

- See NEC table 690.7 for the appropriate code-related voltage adjustment factor for crystalline silicon modules, or use the manufacturer’s specified voltage coefficient.

General Information About Solar Modules

Safety

DC+ and DC- terminals on the Fronius IG Plus

DC+

DC-

Overview ‘Connecting Solar Module Strings to the Fronius IG Plus (DC)’ includes

the following sections:

- Connecting Solar Module Strings

- Criteria for the Proper Selection of String Fuses

- Connecting combined Solar Module Strings using a DC String Input Combiner

- Solar Module Ground at Positive Pole: Connecting Solar Module Strings

- Criteria for the Proper Selection of String Fuses

- Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings using a DC String Input Combiner

DC-Terminals

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- All electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

- Use copper wire for all grounding wires

- For appropriate grounding see NEC Section 250.

Connecting Solar Module Strings

The Fronius IG Plus is designed for a solar module ground at the negative pole. The solar module ground is carried out via a fuse in the inverter.

Solar Module Ground

DC+

DC-

Inverter

N L1

GND

Solar module

Solar module ground at negative pole with fuse

DC main switch

Wire Cross Section of Solar Module Strings

WARNING! An electric shock can be fatal. Normally grounded

conductors may be ungrounded and energized when a ground fault is indicated. The ground fault has to be repaired before operation is resumed.

NOTE Do not connect the ground to the DC negative at any point! This is already done within the Fronius IG Plus. If the DC negative is connected to ground at the DC terminal block or prior, this will circumvent the GFDI protection system, preventing your Fronius IG Plus from properly detecting a fault current. Additionally, turning the DC disconnect to the off/open-circuit condition will not disconnect the array from ground, as it only disconnects the DC positive.

GFDI fuse

String fuse

Connecting Solar Module Strings

Wire Cross Section of Solar Module Strings

(continued)

CAUTION! Danger of damaging the inverter by overload. Connect a maximum of 20 A to one single DC input terminal.

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter.

1/2 in.

Wire for solar module grounding

Conduit

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- Use minimum AWG 14 to maximum AWG 6, min. 167°F (75°C), copper wire for all DC wiring connections to the Fronius IG Plus. Voltage drop and other considerations may dictate larger size wires be used.

- Use only solid or stranded wire. Do not use fine stranded wire

Tightening torque:

stranded wires................1.25 ft. lb.

solid wires ......................0.81 ft. lb.

DC+

DC-

DC+

Connecting Solar Module Strings

(continued)

NOTE Connecting the DC wiring with the wrong polarity may cause damage to the inverter. Check both the polarity and the open circuit voltage.

The DC Voltage must not exceed 600 V, regardless of temperature.

DC-

DC+

1.33 ft. lb.

NOTE

Form a min. 4 in. wire loop using all wires.

SMON

SMOFF

Important

- Set the jumper from the ‘SMON’ position to the ‘SMOFF’ position for correct measurement results

- Check the polarity and voltage of the solar module strings: the DCvoltage must not exceed 600 V, the difference between the individual solar module strings should be less than 10 V.

1.33 ft. lb.

Tightening torque for solid and stranded wires

Connecting Solar Module Strings

(continued)

DC+

DC-

SMON

SMOFF

Important The Fronius IG Plus is shipped with conductive slugs in the fuseholders. Series fusing may be required depending on the type of PV module used in the system. See NEC 690.9.

Select string fuses according to the information from the solar module manufacturer or as per ‘Criteria for the Proper Selection of String Fuses’ (max. 20 A per single DC input terminal)

Important

- Follow all solar module safety instructions

- Follow all solar module manufacturer requirements

Inserting String fuses into the Fronius IG Plus

NOTE

- Insert fuses only with a fuse cover in the respective fuse holder

- Do not operate the Fronius IG Plus without fuse covers

DC-

WARNING! An electrical shock can be fatal. Danger from DC voltage from solar modules. Fuse covers are for installation purposes only. They offer no protection against contact.

Criteria for the Proper Selection of String Fuses

The following criteria must be fulfilled for each solar module string when using fuse protection:

-IN > 1.56 x I

-IN < 2.00 x I

-VN >/= 600 V DC

- Fuse dimensions: Diameter 10.3 x 35 - 38 mm

IN....... Nominal current rating of fuse

ISC..... short circuit current for standard test conditions (STC) according to

solar module data sheet

VN..... Nominal voltage rating of fuse

NOTE The string fuse size must not be greater than the maximum fuse size rating of the PV module as provided on the PV module manufacturers data sheet. If no maximum fuse size is indicated, please contact the PV module manufacturer.

Effects of using underrated fuses

In underrated fuses, the nominal current value is less than the short circuit current of the solar module. Effect: The fuse may trip in intensive irradiance conditions.

General The use of string fuses in the inverter also adds fuse protection to the

solar modules. A crucial factor for the fuse protection of solar modules is the maximum short circuit current (ISC) of the respective solar module.

DC disconnect requirements

NEC 690.15-18 allows the use of fuse holders as a suitable means of disconnecting PV arrays for servicing. Additional DC disconnects external to the inverter may be required by the local authority having jurisdiction.

Fuse Recommendations Application Example

NOTE

Only select fuses suitable for a voltage of 600 V DC.

Example: Maximum short circuit current (ISC) of the solar module = 5.75 A

According to the criteria for selecting the correct fuse, the fuse must have a nominal current greater than 1.5 times the short circuit current:

5.75 A x 1.56 = 8.97 A The fuse that should be selected according to the ‘Fuses’ table: KLK D 9

with 9.0 A and 600 V AC / DC

Nominal Fuse current value

1.0 A KLK D 1

1.5 A KLK D 1 1/

2.0 A KLK D 2

2.5 A KLK D 2 1/

3.0 A KLK D 3

3.5 A KLK D 3 1/

4.0 A KLK D 4

5.0 A KLK D 5

Fuses

‘Fuses’ table: Excerpt of suit able fuses, e.g. Littelfuse fuses

Nominal Fuse current value

6.0 A KLK D 6

7.0 A KLK D 7

8.0 A KLK D 8

9.0 A KLK D 9

10.0 A KLK D 10

12.0 A KLK D 12

15.0 A KLK D 15

20.0 A KLK D 20

Connecting combined Solar Module Strings using a DC String Input Combiner

Additional required components

Option

General

Additional Required Components

- 2 string input combiners (available from Fronius as an option)

- cable lugs select cable lugs that match the

available DC cables

- hexagon screws

- hexagon nuts matching the cable lugs

The following additional components are required for connecting combined solar module strings using a DC string input combiner:

When more solar module strings are combined to one solar module string prior to the inverter, the solar module string current may exceed the permissable DC input terminal current rating of 20 A.

In this case the DC cables can be connected to the Fronius IG Plus using a string input combiner as an option.

The Fronius IG Plus is designed for a solar module ground at the negative pole. The solar module ground is carried out via a fuse in the inverter.

Solar Module Ground

DC+

DC-

Inverter

N L1

GND

Solar module

Solar module ground at negative pole with fuse

DC main switch

GFDI fuse

String fuse

Safety

Solar Module Ground

(continued)

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- All electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

- Use copper wire for all grounding wires

- For appropriate grounding see NEC Section 250.

- Use only solid or stranded wire. Do not use fine stranded wire

WARNING! An electric shock can be fatal. Normally grounded conductors may be ungrounded and energized when a ground fault is indicated. The ground fault has to be repaired before operation is resumed.

Connecting combined Solar Module Strings using a DC String Input Combiner

Conduit

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter.

DC+

1/2 in.

Connecting combined Solar Module Strings using a DC String Input Combiner

(continued)

NOTE Connecting the DC wiring with the wrong polarity may cause damage to the inverter. Check both the polarity and the open circuit voltage.

The DC Voltage must not exceed 600 V, regardless of temperature.

Tightening torque:

stranded wires................1.25 ft. lb.

solid wires ......................0.81 ft. lb.

1/2 in.

DC+

1.33 ft. lb.

Wire for solar module grounding

1/2 in.

DC-

Connecting combined Solar Module Strings using a DC String Input Combiner

(continued)

1.33 ft. lb.

CAUTION! Danger of damaging the inverter by overload. Bevore starting up the inverter make sure, that a conductive slug is inserted in each fuse holder for string fuses.

- Insert conductive slugs only with a fuse cover in the respective fuse holder

- Do not operate the Fronius IG Plus without fuse covers

NOTE

Form a min. 4 in. wire loop using all wires.

Solar Module Ground at Positive Pole: Connecting Solar Module Strings

The following steps are necessary when the solar module manufacturer requires a solar module ground at the positive pole.

General

Solar Module Ground at Positive Pole

DC+

DC-

Inverter

GND

Solar module

Solar module ground at positive pole with fuse

DC main switch

GFDI fuse

String fuse

Wire Cross Section of Solar Module Strings

WARNING! An electric shock can be fatal. Normally grounded

conductors may be ungrounded and energized when a ground fault is indicated. The ground fault has to be repaired before operation is resumed.

NOTE Do not connect the ground to the DC positive at any point! This is already done within the Fronius IG Plus. If the DC positive is connected to ground at the DC terminal block or prior, this will circumvent the GFDI protection system, preventing your Fronius IG Plus from properly detecting a fault current. Additionally, turning the DC disconnect to the off/open-circuit condition will not disconnect the array from ground, as it only disconnects the DC negative.

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- Electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

- Use copper wire for all grounding wires

- For appropriate grounding see NEC Section 250.

L2 L3

LOAD

LINE

LOAD

LINE

After disconnecting the DC filter wire:

- Connect the red DC+ wire to the DC- filter terminal as per step 4

- Connect the black DC- wire to the DC+ filter terminal as per step 4 NOTE Identify the reversed polarity accordingly with (+) and (-)

at the DC input terminal blocks.

Solar Module Ground at Positive Pole: Connecting Solar Module Strings

Wire Cross Section of Solar Module Strings

(continued)

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- Use only solid or stranded wire. Do not use fine stranded wire.

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter.

Conduit

black

red

black

1.33 ft. lb.

Solar Module Ground at Positive Pole: Connecting Solar Module Strings

(continued)

1/2 in.

Wire for solar module grounding

NOTE Connecting the DC wiring with the wrong polarity may cause damage to the inverter.

Check both the polarity and the open circuit voltage.

The DC Voltage must not exceed 600 V, regardless of temperature.

NOTE

Form a min. 4 in. wire loop using all wires.

Tightening torque:

stranded wires................1.25 ft. lb.

solid wires ......................0.81 ft. lb.

1.33 ft. lb.

Tightening torque for solid and stranded wires

CAUTION! Danger of damaging the inverter by overload. Connect a maximum of 20 A to one single DC input terminal.

SMON

SMOFF

Solar Module Ground at Positive Pole: Connecting Solar Module Strings

(continued)

SMON

SMOFF

Important

- Set the jumper from the ‘SMON’ position to the ‘SMOFF’ position for correct measurement results

- Check the polarity and voltage of the solar module strings: the DCvoltage must not exceed 600 V, the difference between the individual solar module strings should be less than 10 V.

Important The Fronius IG Plus is shipped with conductive slugs in the fuseholders. Series fusing may be required depending on the type of PV module used in the system. See NEC 690.9.

Select string fuses according to the information from the solar module manufacturer or as per ‘Criteria for the Proper Selection of String Fuses’ (max. 20 A per single DC input terminal)

Important

- Follow all solar module safety instructions

- Follow all solar module manufacturer requirements

Solar Module Ground at Positive Pole: Inserting String fuses into the Fronius IG Plus

(continued)

NOTE

- Insert fuses only with a fuse cover in the respective fuse holder

- Do not operate the Fronius IG Plus without fuse covers

DC-

WARNING! An electrical shock can be fatal. Danger from DC voltage from solar modules. Fuse covers are for installation purposes only. They offer no protection against contact.

Criteria for the Proper Selection of String Fuses

The following criteria must be fulfilled for each solar module string when using fuse protection:

-IN > 1.56 x I

-IN < 2.00 x I

-VN >/= 600 V DC

- Fuse dimensions: Diameter 10.3 x 35 - 38 mm

IN....... Nominal current rating of fuse

ISC..... short circuit current for standard test conditions (STC) according to

solar module data sheet

VN..... Nominal voltage rating of fuse

Effects of using underrated fuses

In underrated fuses, the nominal current value is less than the short circuit current of the solar module. Effect: The fuse may trip in intensive irradiance conditions.

General The use of string fuses in the inverter also adds fuse protection to the

solar modules. A crucial factor for the fuse protection of solar modules is the maximum short circuit current (ISC) of the respective solar module.

DC disconnect requirements

Fuse Recommendations Application Example

NOTE

Only select fuses suitable for a voltage of 600 V DC.

Example: Maximum short circuit current (ISC) of the solar module = 5.75 A

According to the criteria for selecting the correct fuse, the fuse must have a nominal current greater than 1.5 times the short circuit current:

5.75 A x 1.56 = 8.97 A The fuse that should be selected according to the ‘Fuses’ table: KLK D 9

with 9.0 A and 600 V AC / DC

Nominal Fuse current value

1.0 A KLK D 1

1.5 A KLK D 1 1/

2.0 A KLK D 2

2.5 A KLK D 2 1/

3.0 A KLK D 3

3.5 A KLK D 3 1/

4.0 A KLK D 4

5.0 A KLK D 5

Fuses

‘Fuses’ table: Excerpt of suit able fuses, e.g. Littelfuse fuses

Nominal Fuse current value

6.0 A KLK D 6

7.0 A KLK D 7

8.0 A KLK D 8

9.0 A KLK D 9

10.0 A KLK D 10

12.0 A KLK D 12

15.0 A KLK D 15

20.0 A KLK D 20

Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings using a DC String Input Combiner

The following work steps are only necessary when the solar module manufacturer requires a solar module ground at the positive pole.

When more solar module strings are combined to one solar module string prior to the inverter, the solar module string current may exceed the permissable DC input terminal current rating of 20 A.

In this case the DC cables can be connected to the Fronius IG Plus using a string input combiner as an option.

General

Additional required components

Option

Additional Required Components

- 2 string input combiners (available from Fronius as an option)

- cable lugs select cable lugs that match the

available DC cables

- hexagon screws

- hexagon nuts matching the cable lugs

The following additional components are required for connecting combined solar module strings using a DC string input combiner:

Solar Module Ground at Positive Pole

DC+

DC-

Inverter

GND

Solar module

Solar module ground at positive pole with fuse

DC main switch

GFDI fuse

String fuse

L2 L3

Solar Module Ground at Positive Pole

(continued)

Safety

Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings using a DC String Input Combiner

Conduit

WARNING! An electric shock can be fatal. Inadequately sized electrical components can cause serious injuries to persons and damage to (or loss of) property.

- Electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

- Use copper wire for all grounding wires

- For appropriate grounding see NEC Section 250.

- Use only solid or stranded wire. Do not use fine stranded wire.

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter.

Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings using a DC String Input Combiner

(continued)

1/2 in.

DC-

After disconnecting the DC filter wire:

- Connect the red DC+ wire to the DC- filter terminal as per step 4

- Connect the black DC- wire to the DC+ filter terminal as per step 4 NOTE Identify the reversed polarity accordingly with (+) and (-)

at the DC input terminal blocks.

Tightening torque:

stranded wires................1.25 ft. lb.

solid wires ......................0.81 ft. lb.

NOTE Connecting the DC wiring with the wrong polarity may cause damage to the inverter. Check both the polarity and the open circuit voltage.

The DC Voltage must not exceed 600 V, regardless of temperature.

Wire for solar module grounding

LOAD

LINE

LOAD

LINE

black

red

black

1.33 ft. lb.

CAUTION! Danger of damaging the inverter by overload. Bevore starting up the inverter make sure, that a conductive slug is inserted in each fuse holder for string fuses.

- Insert conductive slugs only with a fuse cover in the respective fuse holder

- Do not operate the Fronius IG Plus without fuse covers

1/2 in.

DC-

1.33 ft. lb.

1/2 in.

DC+

1.33 ft. lb.

NOTE

Form a min. 4 in. wire loop using all wires.

Solar Module Ground at Positive Pole: Connecting combined Solar Module Strings using a DC String Input Combiner

(continued)

Attaching Power S tage Set s and Closing the Fronius IG Plus

Preparation

Attaching Power Stage Sets And Closing the Fronius IG Plus

Opening the Fronius IG Plus for Service/Maintenance

Procedure for opening the Fronius IG Plus for service or maintenance:

1. Disconnect the AC and DC supply from the inverter

2. Open the connection area

3. Turn off DC main switch

4. Allow the capacitors to discharge (5 minutes)

5. Remove metal covers

6. Remove the plastic dividers

7. Remove string fuses

8. Disconnect DC wire

9. Disconnect AC wire

The Fronius IG Plus is now operational.

St art up Operation

Your Fronius IG Plus unit has been pre-configured in the factory and is ready for operation. You only have to set the available power grid for startup. To change your inverter settings, please see section ‘The Setup Menu’ in the chapter ‘Operation’.

Factory preset configuration

Requirements for Starting up Operation

- Fronius IG Plus connected to the public grid (AC)

- Fronius IG Plus connected to the solar modules (DC)

- 3 plastic dividers set in

- 2 metal covers mounted

- power stage set mounted

NOTE

Do not operate the Fronius IG Plus without fuse covers.

Start up Operation

off

1. Turn on AC disconnect

2. Flip DC main switch to position

- 1 As soon as the photovoltaic

modules produce sufficient power, the Operating Status LED lights up orange.

The orange LED indicates that the feed-in mode of the Fronius IG Plus will begin shortly.

The screen displays the startup phase

- Segment test All display elements light up for about one second

- The Fronius IG Plus unit goes through a master check list for several seconds

The display shows ‘TEST’ and indicates the respective component which is being tested (for example ‘LED’)

Start up Opeation

(continued)

- The grid selection phase begins: 'SETUPSEL' is shown

3. Press the ‘Enter’ key

The first grid selection option is shown (e.g.: 208 V)

4. Selecting the public grid

Selecting the public grid

Several grid selection options are displayed depending on the product type (see also section 'Connecting the Fronius IG Plus to the Public Grid’).

1. Use the ‘Up’ and ‘Down’ keys to select the desired grid

Grid voltage 208 V Delta No neutral conductor in the system Neutral conductor monitoring is deactivated

120 °

208 V

L2L3

120 V

120 °

208 V

Grid voltage 208 V Delta: 120 V WYE Neutral conductor available in the system Neutral conductor monitoring is activated

Selecting the public grid

(continued)

Grid voltage 240 V Delta No neutral conductor in the system Neutral conductor monitoring is deactivated

240 V

120 °

L2L3

Grid voltage 240 V: 120 V Stinger Neutral conductor available in the system Neutral conductor monitoring is activated

240 V

120 °

120 V120 V

180 °

120 V 120 V

240 V

L1 L2

Grid voltage 240 V: 120 V Split Phase Neutral conductor available in the system Neutral conductor monitoring is activated

240 V

120 °

120 V120 V

Selecting the Public grid

(continued)

277 V

120 °

480 V

480V

480 V

Grid voltage 480 V Delta: 277 V WYE Neutral conductor available in the system Neutral conductor monitoring is activated

2. Press the 'Enter' key 2x to confirm your grid selection (or use the 'Esc' key to return to grid selection)

The startup phase starts again with the segment test.

Startup Phase at Startup Operation

- ‘TESTCOM’ is shown

- Synchronization with grid ‘WAITPS’ is shown: The Fronius IG Plus is waiting for all power supplies in the network to be on stand-by. This procedure takes place dependent on the DCvoltage.

- Segment test All display elements light up for about one second

- The Fronius IG Plus unit goes through a master check list for several seconds

The display shows ‘TEST’ and indicates the respective component which is being tested (for example ‘LED’)

- Operation of feeding energy into the grid After conclusion of the tests, the Fronius IG Plus unit starts feeding energy into the grid. The display shows the present power feeding into the grid. The Operating Status LED lights up green, and the Fronius IG Plus unit starts operating.

Important For more information about the startup phase, please see chapter 'Operation', section 'Product Description Fronius IG Plus' (Startup Phase, Test Procedure).

Startup Phase at Startup Operation

(continued)

Next, the display shows

- Startup test Before the Fronius IG Plus unit starts feeding energy into the grid, the conditions of the grid are tested in detail in accordance with regulations. The display shows ‘STARTUP’

‘SYNCAC’, the grid icon blinks

Inserting Option Cards

Suitable Option Cards

There are several options and system upgrades available for the Fronius IG Plus, e.g.:

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

- Various large displays (Fronius Public Display)

- Sensors (temperature / irradiance / energy meter, wind speed)

- Fronius Personal Display

System upgrades are available as plug-in cards and as external boxes. The Fronius IG Plus 12.0-3 WYE 277 is designed for three option cards, all other Fronius IG Plus products are designed for two option cards.

Safety

WARNING! An electrical shock can be fatal. Danger from grid

voltage and DC voltage from solar modules.

- The connection area should only be opened by a licensed electrician.

- Never work with live wires! Prior to all connection work, make sure that the AC and DC wires are not charged.

- All electrical installations must be in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

- For installations in Canada the installations must be done in accordance with applicable Canadian standards.

WARNING! An electrical shock can be fatal. Danger from residual voltage from capacitors. You must wait until the capacitors have discharged. Discharge takes 5 minutes.

NOTE

Follow general ESD precautions when handling option cards.

Opening the Fronius IG Plus

When adding option cards to the Fronius IG Plus, please follow all inverter safety instructions and information.

Opening Fronius IG Plus

(continued)

Inserting Option Cards

Insert option cards into free slots.

Important The plastic dividers are used to separate the data communication wires from the AC and DC wires:

- Data communication wires must be laid above the plastic dividers

- AC and DC wires are laid under the plastic dividers Make sure that the plastic dividers are present.

Connecting Option Cards, Laying Data Communication Wires

CAUTION! Danger of short circuit by loose metal parts from

knockouts. Loose metal parts in the inverter may cause short circuits when the inverter is powered up. When removing knockouts, make sure that

- no loose metal parts fall into the inverter

- any metal pieces that do fall into the inverter are removed immediately

NOTE The knockout for the data communication wire must be above the plastic dividers so that the plastic dividers are always under the data communication wire.

* Position of

Connecting Option Cards, Laying Data Communication Wires

(continued)

plastic dividers

NOTE Only use water tight conduit fittings and conduits. Conduit fittings and conduits are not part of the scope of delivery for the inverter.

Conduit

3 = one wire input for both data communication wires 4 = separated wire inputs on opposite sides (e.g. when several inverters

are installed next to each other)

Closing the Fronius IG Plus

Solar Net and Data Interface

Important Secure newly-added option cards to the metal cover using the screws provided with the option cards.

Fronius developed Solar Net to make these add-on system components flexible and capable of being used in a wide variety of different applications. Solar Net is a data network which enables several Fronius IG Plus units to be linked with the system upgrades.

Solar Net is a bus system. A single wire is all that is required for one or more Fronius IG Plus units to communicate with all system upgrade components.

The core of the Solar Net is the Datalogger. It coordinates data transmission and ensures quick and safe distribution and storage of large volumes of data.

The ‘Fronius Com Card’ is required to integrate the Fronius IG Plus into the Solar Net.

Important Every Fronius IG Plus that is to be monitored using a Datalogger requires a ‘Fronius Com Card.’ In this case, the ‘Fronius Com Card’ serves as a link between the internal network of the Fronius IG Plus and the Solar Net interface of the Datalogger.

Important Each inverter can only have one ‘Fronius Com Card.’ A network may only contain one Datalogger.

The first Fronius IG Plus with a ‘Fronius Com Card’ can be up to 3280 ft (1000 m) away from the last Fronius IG Plus with a ‘fronius Com Card’.

Different system upgrades are detected automatically by Solar Net. In order to distinguish between several identical system upgrades, each

one must be assigned a unique number.

Solar Net and Data Interface

(continued)

In order to uniquely define each Fronius IG Plus in Solar Net, each Fronius IG Plus 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 the individual system upgrades can be found in the relevant operating instructions or on the Internet at http://www.fronius-usa.com.

Example

12 3

Fronius IG Plus

Com Card

Datalogger C.

IN OUT

Com Card

IN OUT

RS 232

OUT

Sensor Box

IN OUT

°C

W/m²

m/s

Logging and archiving data from the inverter and sensor using a Datalogger and sensor box.

Data network with 3 Fronius IG Plus units and one sensor box:

- all Fronius IG Plus units have one ‘Fronius Com Card’

- one Fronius IG Plus has a ‘Datalogger card’ (no. 2)

- Datalogger has two RS-232 interfaces for connecting to a PC and a modem

Termination plug

Option cards communicate within the Fronius IG Plus via its internal network. External communication (Solar Net) takes place via the ‘Fronius Com Cards.’ Each ‘Fronius Com Card’ is equipped with two RS485 interfaces - an input and an output. RJ45 plug connectors are used to connect to these cards.

Operation

Product description Fronius IG Plus

Keys and Symbols

(1)

(2)

(3)(4)(5)(6)

Keys and Symbols on the Fronius IG Plus

Display Power for the display comes from the solar modules via safety-low volta-

ge. The display is, therefore, available only during daylight hours. Important The Fronius IG Plus display is not a calibrated measuring

instrument. A slight deviation of a few percent points is intrinsic to the system. A calibrated meter is required to make calculations for the utility company.

Item Function

(1) Display

for displaying values, settings and menus

(2) Operating Status LED

for displaying the operating status

(3) ‘Enter’ key

for confirming a choice

(4) ‘Menu / Esc’ key

switching to the menu level (‘Menu’) or exit from the setup menu (‘Esc’)

(5) ‘Down/Right’ key

depending on the selection: for navigating down for navigating right

(6) ‘Left/Up’ key

depending on the selection: for navigating left for navigating up

Display

(continued)

(12)

(1) (2) (3) (4) (5)

(6) (7)

(8)(9)(10)(11)

(13)

Display

... indicates the maximum value within the period of observation (depending on the display mode chosen)

... indicates the minimum value within the period of observation (depending on the mode of display chosen)

Important The Min. and Max. values may not correspond to the absolute extreme values, as the measured data are recorded at two second intervals.

... appears with data readings that are transmitted by the energy meter (optional)

... appears with data readings that are directly related to the solar modules

... appears with data readings that are related to environmental conditions, like solar irradiance and temperature (optional)

... appears with AC data readings that are directly related to the grid

... appears with data readings that are related directly to the Fronius IG Plus unit

Item Function

(1) Icons for the ‘Now’ display mode (2) Icons for the ‘Day’ display mode (3) Icons for the ‘Year’ display mode (4) Icons for the ‘Total’ display mode (5) Icons for the ‘Setup’ display mode (6) Icons for operating conditions

Item Function

(7) area for unit display

for displaying the applicable measuring unit (8) Icon for the ‘Enter’ key (9) Icons for the ‘Menu/Esc’ key (10) Icons for the ‘Down/Right’ key (11) Icons for the ‘Left/Up’ key (12) Area for data

for displaying the data value measured (13) output bar (not active during setup)

indicates the power output fed into the grid at a given moment -

independent from the display mode chosen. The screen displays

% of the maximum possible output power of your solar inverter

Startup phase After switching on automatically, the Fronius IG Plus unit goes through a

self-test, followed by an extensive test of the grid. This test takes five minutes. During the startup sequence the illumination of the Operating Status LED is yellow.

1. Segment test

All display elements light up for about one second

2. Self test of important components of the Fronius IG Plus unit

- The Fronius IG Plus unit goes through a master check list for several seconds

- The display shows ‘TEST’ and indicates the respective component which is being tested (for example ‘LED’)

3. Synchronization with grid

- ‘WAITPS’ is shown: The Fronius IG Plus is waiting for all power stage sets in the network to be on stand-by. This procedure takes place dependent on the DC-voltage.

Test Procedure

Display

(continued)

Test Procedure

(continued)

- Next, the display shows ‘SYNCAC’, the grid icon blinks

4. Startup Test

- Before the Fronius IG Plus unit starts feeding energy into the grid, the conditions of the grid are tested in detail in accordance with regulations.

- The display shows ‘STARTUP’

The startup test takes five minutes. The time elapsed is indicated by a bar shrinking from the top down.

Whenever two scale divisions stop flashing and disappear, 1/10 of the total duration of the test is over.

5. Operation of feeding energy into the grid

- After conclusion of the tests, the Fronius IG Plus unit starts feeding energy into the grid.

- The display shows the present power feeding into the grid

- The Operating Status LED lights up green, and the Fronius IG Plus unit starts operating

Operating Status LED

Operating Status Explanation LED

lights up green A green light starts as soon as the Fronius IG

Plus unit has completed the startup phase, and stays green as long as the operation of feeding power into the grid continues. i It indicates faultless operation of the photovoltaic equipment.

flashes green The photovoltaic equipment is operating without

fault, an additional message is shown on the screen.

When a status code is shown, rectify the relevant condition by going to the ‘Maintenance and Service’ chapter, ‘Status Diagnosis and Troubleshooting’ section. The status message can be acknowledged by pressing the ‘Enter’ key.

lights up orange The FRONUS IG unit will enter the automatic

startup-phase, as soon as the photovoltaic modules yield sufficient power output

flashes orange when a warning is shown on the screen

or the Fronius IG Plus unit has been set to standby operation in the setup menu (manual shutoff of operation).

The next day, operation will resume automatically. During the time the LED flashes orange, the

operation can be resumed manually at any time (see section ‘The Setup Menu’)

Position of Operating Status LED on the Fronius IG Plus

Depending on the operating status, the Operating S tatus LED assumes different colors:

Operating Status LED

(continued)

Operating Status Explanation LED

lights up red General status: the respective status code is

shown on the screen

remains dark There is no connection to the solar modules;

no power output from modules due to darkness

A list of most status codes, the corresponding status information, their status causes and repair measures can be found in the chapter ‘Troubleshooting and Maintenance’, section ‘Status Diagnosis and Troubleshooting’.

1. Press any key The display backlight is activated. If no key is pressed for 30 seconds, the display backlight stops.

The setup menu also offers a choice between permanently lit or permanently dark display.

Activating Display Illumination

Operating scheme - the Display

Accessing Menus

(1)

1. Press the ‘Menu’ button (1)

Accessing Menus

‘Menu’ will appear on the display

The Fronius IG Plus is now in the menu level.

From the menu level you can

- set the desired display mode

- access the Setup menu

Menu Levels

(1) (2) (3) (4)

(5)(6)(7)

(2)(1) (2)(1)

Selecting a display mode

1. Accessing Menu Levels

2. Use the ‘left (7) or ‘right’ (6) keys to select your preferred display mode (1) - (4)

3. Press ‘Enter’ (5)

Selecting a Display Mode

The selected display mode is shown

Important The ‘Year’ menu option is supported only when the optional Datalogger is connected. This system upgrade includes a realtime clock.

Example: ‘Day’ display mode

Scrolling Between Display functions

1. Selecting a desired display mode

2. Scroll through the available display values using the ‘Up’ (1) and ‘Down’ (2) keys

Example: ‘Fed-in Energy’ display value

Example: ‘Earnings’ display value

Display Icon Unit Optional Display value mode

‘Now’ W - output power

V - grid voltage A - output current

Hz - grid frequency

V - module voltage A - module current

°F / °C x module temperature

- - GFDI status

W x output reading of building load

meter

° F / ° C x ambient temperature

W/m² x irradiance

HH:MM x time

‘Day’ kWh / MWh - energy supplied

currency - yield

kg / T - CO2 reduction

W - maximum power output

V - maximum grid voltage V - minimum grid voltage V - maximum array voltage

kwh / MWh x energy as read by building load

meter ° F / ° C x maximum module temperature ° F / ° C x minimum module temperature ° F / ° C x maximum ambient temperature ° F / ° C x minimum ambient temperature

W/m² x maximum irradiance

HH:MM - operating hours of Fronius IG

Plus unit

x optional

When the DatCom component for the required option is not available, the message ‘N.A.’ (not available) is shown.

Overview of Display Values

‘Year’ ‘Total’

Display Modes

The following display modes are available for the Fronius IG Plus:

Display mode ‘Now’..........shows present data

Display mode ‘Day’...........shows data for the present day

Display mode ‘Year’..........shows data for present calendar year - only

available in combination with optional Datalogger

Display mode ‘Total’ .........shows data since your Fronius IG Plus unit first

started operating

Display Modes

Overview The ‘display modes’ are composed of the following sections:

- W ithin display mode ‘Now’ displayed data

- W ithin display modes ‘Day / Year / Total’ displayed data

(1) (2)

Within display mode ‘Now’ displayed data

AC power supplied

power supplied to grid at the particular moment (Watts)

AC grid voltage

(Volts)

Within display mode ‘Now’ displayed data

Grid frequency

(Hertz)

AC current supplied

current supplied to the grid at the particular moment (Amperes)

*) only for a multi-phase Fronius IG Plus

Selecting display mode ‘Now’

1. Select display mode ‘Now’ The first display value appears

in the ‘Now’ display mode

2. Use the ‘Down’ (2) key to scroll to the next display value

Scroll back using the ‘Up’ key (1)

First display values in the ‘Now’ display mode

Within display mode ‘Now’ displayed data

(continued)

DC array voltage

voltage of the solar array at the moment of data display (Volts)

DC array current

current supplied by solar array at the moment of data display (Amperes)

The voltage shown while AC power is supplied is called MPP voltage (MPP = maximum power point).

Module temperature (optional)

temperature at solar modules (°F; can also be set for °C; this corresponds to temperature sensor No.1; Sensor Box, Datalogger and temperature sensor required)

GFDI-Status

if there is no ground fault in the system, ‘OK GFDI’ is shown

Power drawn from the grid (optional)

present consumption (Watts; Sensor Box, Datalogger and load sensor required)

Ambient temperature (optional)

(° F; can also be set for ° C in setup menu; this corresponds to temperature sensor No.2; Sensor Box, Datalogger and temperature sensor required)

Irradiance (optional)

the sunlight’s power per square meter (Watts/m²; Sensor Box and irradiance sensor required)

NL-MON Communication

When the communication with the plug-in card ‘NL-MON’ sustains ‘NLMONOK’ is shown.

Options If the DatCom component for the required options are not available, the

message "N.A." (not available) is shown.

Time of the day (optional datalogger)

When the time on the Fronius IG Plus or a system upgrade is changed, this changes the time on all connected devices via Solar Net.

Within display mode ‘Now’ displayed data

(continued)

1. Select display mode ‘Day’ or ‘Year’ or ‘Total’

The first display value in the selected display mode is shown.

2. Use the ‘Down’ (2) key to scroll to the next display value

Scroll back using the ‘Up’ key (1)

(1) (2) (1) (2)

For the Fronius IG Plus unit, the day begins when it switches on. If the DC supply line is disconnected, the following parameters within the display mode ‘Day’ will be re-set after repeating the start-up:

- yield (currency can be selected)

-CO2 reduction (lbs.)

- maximum power supplied (Watts)

- maximum grid voltage (Volts)

- minimum grid voltage (Volts)

- energy supplied (kWh)

- operating hours for Fronius IG Plus unit If an optional datalogger is available, the display values listed always

apply for the whole day.

Within display modes ‘Day / Year / T otal’ displayed data

General

Selecting display modes ‘Day / Year / Total’

(1) (2)

First display value in the display mode ‘Day’

First display value in the display mode ‘Year’

First display value in the display mode ‘Total’

Within display modes ‘Day / Year / Total’ displayed data

Energy supplied

energy supplied during monitored period (kWh / MWh)

Due to the variety of different monitoring systems, there can be deviations between the readings of other metering instruments as compared to the readings from the Fronius IG Plus. For determining the energy supplied to the grid, only the readings of the calibrated meter supplied by the electric utility company are relevant.

Yield

money earned during monitored period (set currency and price per kWh in setup menu)

As was the case for the energy supplied, readings may differ from those of other instruments.

CO2 reduction

CO2 emissions avoided during monitored period (lb / T); T = tons The area for unit display switches between ‘lb’ and ‘CO2’.

The CO2 meter gives an indication of CO2 emissions (in lb/t) that would be released during the generation of the same amount of electricity in a combustion power plant. This is set for 1.3 lb/kWh in the factory.

Maximum output power

highest output power of the Fronius IG Plus during observation period (Watts)

Maximum grid voltage

highest reading of grid voltage (V) during observation period

Minimum grid voltage

lowest reading of grid voltage (V) during observation period

Minimum ambient temperature (optional)

lowest ambient temperature reading during observation period (°F; can also be set for °C in setup menu; temperature sensor No 2, Datalogger and Sensor Box required)

Within display modes ‘Day / Year / Tot al’ displayed data

(continued)

Maximum array voltage

highest reading of array voltage (V) during observation period

Energy consumption meter reading (optional)

energy consumed during observation period (kWh / MWh; Sensor Box, Datalogger and consumption sensor required)

Maximum module temperature (optional)

highest temperature reading at solar modules during observation period (°F; can also be set for °C in setup menu; temperature sensor No. 1, , Datalogger and Sensor Box required)

Minimum module temperature (optional)

lowest temperature reading at solar modules during observation period (°F; can also be set for °C in setup menu; temperature sensor No. 1, Datalogger and Sensor Box required)

Maximum ambient temperature (optional)

highest ambient temperature reading during observation period (°F; can also be set for °C in setup menu; temperature sensor No. 2, Datalogger and Sensor Box required)

Within display modes ‘Day / Year / Total’ displayed data

(continued)

Maximum irradiance (optional)

highest irradiance during observation period (W/m²; Sensor Box and reference cell required)

operating hours

duration of operation of Fronius IG Plus unit (HH:MM)

Duration of operation is shown in hours and minutes up to 999 h and 59 min (display: "999:59"). From then on only full hours are displayed.

Although the Fronius IG Plus unit does not operate during the night, all sensor data are recorded around the clock.

Options If the DatCom component for the required options are not available, the

message "N.A." (not available) is shown.

The Setup Menu

The Fronius IG Plus unit is designed for fully automatic operation. No manual control is necessary for feeding the power it generates into the grid.

The setup menu allows easy readjustment of the Fronius IG Plus’s preset parameters to your needs.

Default Settings

Enter the setup menu

(1)

(2)(3)(4)

1. Switch to the menu level (press the ‘Menu’ key)

2. Select the ‘Setup’ (1) mode using the ‘Left’ (4) or ‘Right’ (3) keys

3. Press ‘Enter’ (2)

The Setup Menu’s first menu item ‘STANDBY’ is shown.

‘Setup’ mode selected in the menu level

Menu item ‘ST ANDBY’

Fronius IG Plus 3.0-1, IG Plus 3.8-1, IG Plus 6.0-1, IG Plus 7.5-1, IG Plus 10.0-1 Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual