Fronius Fronius CL USA Operating Instruction [EN]

Download

/ Battery Charging Systems / Welding Technology / Solar Electronics

Fronius CL 36.0 / 48.0 / 60.0 WYE277

Fronius CL 33.3 / 44.4 / 55.5 DELTA

Operating Instructions

Inverter for grid-connected

EN-US

photovoltaic systems

42,0426,0083,EA 009-01042015

Dear Fronius Customer,

Introduction

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

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

EN-US

ud_fr_st_et_01382 012012

ud_fr_st_et_01382 012008

IMPORTANT SAFETY

INSTRUCTIONS

SAVE THESE INSTRUCTIONS

General This manual contains important instructions for the Fronius CL, that must be followed

during installation and maintenance of the inverter.

The Fronius CL 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 CL. To reduce the risk of personal injury and to ensure the safe installation and operation of the Fronius CL, you must carefully read and follow all instructions and safety instructions in these operating instructions.

Failure to follow these instructions and other relevant safety procedures may result in voiding of the warranty and/or damage to the inverter or other property!

Safety Instructions

Electrical installations

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.

Safety Instructions

Explanation of Safety Warnings!

General

„DANGER!“ Indicates an immediate danger. Death or serious injury may

result if appropriate precautions are not taken.

EN-US

„WARNING!“ indicates a potentially dangerous situation. Death or serious injury may result if appropriate precautions are not taken.

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

NOTE! Indicates a situation which could adversely affect work results and may cause damage to equipment.

„Important“ Highlights tips for correct operation and other particularly useful information. It does not indicate a potentially damaging or dangerous situation.

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

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

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

- the equipment and other property of the owner/operator

- the efficient operation of the equipment.

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

- be suitably qualified

- be familiar with electrical installations

- have completely read and followed these operating instructions

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

All safety instructions and warning signs on the equipment itself:

- must be maintained in legible condition

- must not be damaged

- must not be removed

- must not be covered or painted over

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

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

Your safety is at stake.

ud_fr_se_sv_01381 012012

Intended Use

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

Ambient Conditions

Qualified Personnel

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.

The servicing information contained in these operating instructions is intended only for the use of qualified service engineers. An electric shock can be fatal. Please do not perform any actions other than those described in the documentation. This also applies to qualified personnel.

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.

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

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

Safety Precautions at Equipment Location

ud_fr_se_sv_01381 012012

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.

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.

Information on Noise Emission Values

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

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

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

EMC Device Classifications

Devices in emission class A:

- Are only designed for use in industrial settings

- Can cause grid-bound and radiated interference in other areas

Devices in emission class B:

- Satisfy the emissions criteria for residential and industrial areas. This is also true for residential areas in which the energy is supplied from the public low-voltage grid.

EMC device classification as per the rating plate or technical data

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

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

EN-US

Grid connection

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

- Connection limitations

- Requirements regarding permitted mains impedance

- Requirements regarding minimum required short circuit power

for each interface to the public grid

See technical data

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

III

ud_fr_se_sv_01381 012012

Electrical Installations

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

ESD Precautions

Safety Precautions in NormalOperation

Safety Markings

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

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

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

- the equipment and other property of the owner/operator

- the efficient operation of the equipment

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

Never bypass or disable safety equipment.

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

Disposal

Data Security

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.

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.

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.

ud_fr_se_sv_01381 012012

Table of Contents

Protection of Persons and Equipment ............................................................................................................ 5

Safety ........................................................................................................................................................ 5

Protection of Persons and Equipment ....................................................................................................... 5

Galvanic Isolation ...................................................................................................................................... 5

Monitoring the Grid .................................................................................................................................... 5

Information about Field Adjustable Trip Points .......................................................................................... 5

FCC Compliance ....................................................................................................................................... 5

Ground Fault Detector / Interrupter ........................................................................................................... 6

Standards and Regulations ....................................................................................................................... 6

Product Listings and Compliance .............................................................................................................. 6

Warning notices affixed to the device........................................................................................................ 7

Use in accordance with "intended purpose" ................................................................................................... 8

Use in accordance with "intended purpose" .............................................................................................. 8

Field of application .................................................................................................................................... 8

Photovoltaic system stipulations ............................................................................................................... 8

Operating Principle ......................................................................................................................................... 9

Fully Automatic Operational Management ................................................................................................ 9

The MIXTM Concept ................................................................................................................................ 9

Reliability ................................................................................................................................................... 9

Power Derating ......................................................................................................................................... 9

Forced Ventilation ................................................................................................................................... 10

The Fronius CL Unit in the PV System .......................................................................................................... 11

General .................................................................................................................................................... 11

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

Converting DC into AC Current ................................................................................................................ 11

Display function and data communication ................................................................................................ 11

Data Communications Components............................................................................................................. 12

Data Communications Components........................................................................................................ 12

Fronius Com Card ................................................................................................................................... 12

Fronius Modbus Card.............................................................................................................................. 12

Fronius Datalogger .................................................................................................................................. 12

Fronius Sensor Card / Box ...................................................................................................................... 12

Fronius Interface Card and Fronius Interface Card easy ........................................................................ 12

Fronius String Control 250/25 ................................................................................................................. 12

Inverter Product Description ......................................................................................................................... 13

Inverter Product Description (doors closed) ............................................................................................ 13

Inverter Product Description (doors opened) .......................................................................................... 14

Connection Area Product Description .......................................................................................................... 15

Connection Area Product Description ..................................................................................................... 15

Terminals in the Area of the Isolated Relay Contact................................................................................ 16

Installation and Connection Accessories ................................................................................................. 16

Choosing the Location ................................................................................................................................. 17

Choosing the Location in General ........................................................................................................... 17

Criteria for Location Selection ................................................................................................................. 17

Unsuitable Locations ............................................................................................................................... 17

Transport ...................................................................................................................................................... 18

Transport ................................................................................................................................................. 18

Crane Transport Using Forks .................................................................................................................. 19

Transport Using a Forklift or Lift Truck .................................................................................................... 19

Manual Transport .................................................................................................................................... 19

Removing Power Stage Sets ........................................................................................................................ 20

Opening the Fronius CL .......................................................................................................................... 20

Removing Power Stage Sets ................................................................................................................... 20

Requirements for Installing the Fronius CL .................................................................................................. 21

Additional External AC and/or DC Disconnect ........................................................................................ 21

Using the Mounting Base ........................................................................................................................ 21

Use of aluminum wires ............................................................................................................................ 21

Inverter Cabling ....................................................................................................................................... 21

Side Cabling ............................................................................................................................................ 21

Bottom Cabling........................................................................................................................................ 22

Fronius CL Installation.................................................................................................................................. 23

Safety ...................................................................................................................................................... 23

Preparing AC and DC Wires ................................................................................................................... 23

Positioning the Mounting Base ................................................................................................................ 24

Installation of several inverters ................................................................................................................ 24

Installing the Mounting Base ................................................................................................................... 25

Preparing the Fronius CL ........................................................................................................................ 26

Positioning the Fronius CL on the Mounting Base .................................................................................. 27

Positioning the Fronius CL on the Mounting Base Using a Crane .......................................................... 27

Positioning the Fronius CL on the Mounting Base Using a Crane and Forks, a Forklift or a Lift Truck ... 28

Manually Positioning the Fronius CL on the Mounting Base ................................................................... 28

Securing the Fronius CL to the Mounting Base ....................................................................................... 29

Cross Section of AC and DC Wires .............................................................................................................. 30

Maximum Wire Cross Section ................................................................................................................. 30

Minimum Cross Section of AC Wires ...................................................................................................... 30

Minimum Cross Section of DC Wires ...................................................................................................... 31

Cable Lugs for AC and DC Wires............................................................................................................ 31

Connecting the Fronius CL to the Public Grid (AC) ...................................................................................... 32

Overview of Available Power Grids ......................................................................................................... 32

Monitoring the Grid .................................................................................................................................. 33

AC Terminals ........................................................................................................................................... 33

Possible Connections to the Ground terminal ......................................................................................... 34

Safety ...................................................................................................................................................... 34

Connecting the Fronius CL to the Public Grid (AC) ................................................................................. 35

Connecting aluminium wires ................................................................................................................... 35

AC Connection Examples ....................................................................................................................... 36

Recommendation for the AC-side Overcurrent Protection ...................................................................... 36

Connecting DC Wires to the Fronius CL ...................................................................................................... 37

General Information about Solar Modules .............................................................................................. 37

Safety ...................................................................................................................................................... 37

DC Terminals ........................................................................................................................................... 38

Connecting aluminium wires ................................................................................................................... 38

Connecting DC Wires.............................................................................................................................. 39

DC Connection Examples ....................................................................................................................... 39

Fronius CL Solar Module Ground ................................................................................................................. 41

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

Solar Module Ground via Fuse ............................................................................................................... 41

Safety ...................................................................................................................................................... 42

Solar Module Ground at Negative Pole ................................................................................................... 42

Solar Module Ground at Positive Pole - Inserting Fuse .......................................................................... 42

Inserting Power Stage Sets .......................................................................................................................... 43

Overview ................................................................................................................................................. 43

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

Slot Arrangement .................................................................................................................................... 44

Dip Switches for Identifying Power Stage Set Racks ..............................................................................44

Dip Switch Settings for Each Slot ............................................................................................................ 44

Inserting Power Stage Sets ..................................................................................................................... 45

Application Example ................................................................................................................................ 46

Closing the Fronius CL ................................................................................................................................. 47

Closing the Fronius CL ............................................................................................................................ 47

Start-up Operation ........................................................................................................................................ 48

Requirements for Start-up Operation ...................................................................................................... 48

Start-up Operation ................................................................................................................................... 48

Factory Pre-set Configuration ................................................................................................................. 48

Selecting the Public Grid ......................................................................................................................... 49

Startup Phase during Startup Operation .................................................................................................. 50

Setting inverter for solar module ground at the positive pole .................................................................. 52

Selecting the Interface Protocol and Setting the Inverter Baud Rate ........................................................... 54

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

Entering the access code ........................................................................................................................ 54

Selecting the interface protocol for communication with other data communication components........... 55

Setting the inverter baud rate .................................................................................................................. 56

Setting the Relay Contact Functions ............................................................................................................ 58

General ................................................................................................................................................... 58

Possible Functions of Relay Contacts ..................................................................................................... 58

Entering the access code ........................................................................................................................ 59

Setting the relay contact functions .......................................................................................................... 60

Inserting Option Cards ................................................................................................................................. 61

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

Opening the Fronius CL .......................................................................................................................... 61

Connecting Option Cards, Laying Data Communication Wires ............................................................... 62

Inserting Option Cards ............................................................................................................................ 62

Closing the Fronius CL ............................................................................................................................ 64

Solar Net and Data Communication ............................................................................................................. 65

Solar Net ................................................................................................................................................. 65

Data Communication ............................................................................................................................... 65

Application Example ................................................................................................................................ 66

Keys and Symbols ....................................................................................................................................... 67

Keys and Symbols .................................................................................................................................. 67

Display .................................................................................................................................................... 67

Operating Status LED ............................................................................................................................. 69

Startup Phase and Grid Feed-in Mode ......................................................................................................... 70

Startup Phase.......................................................................................................................................... 70

Test Procedure ........................................................................................................................................ 70

Operation of Feeding Energy into the Grid .............................................................................................. 71

Activating Display Backlight .................................................................................................................... 72

Automatic Deactivation of Display Illumination / Switching to the ‘Now’ Display Mode ........................... 72

Navigation in the Menu Level ....................................................................................................................... 72

Accessing Menu Levels .......................................................................................................................... 72

Selecting a Display Mode ........................................................................................................................ 73

Display Modes .............................................................................................................................................. 73

Display Modes ........................................................................................................................................ 73

Overview of Display Values ..................................................................................................................... 74

Display Values in the ‘Now’ Display Mode .................................................................................................... 75

Selecting the ‘Now’ Display Mode ........................................................................................................... 75

Display Values in the ‘Now’ Display Mode ............................................................................................... 75

Options .................................................................................................................................................... 77

Display Values in the ‘Day / Year / Total’ Display Modes .............................................................................. 78

General ................................................................................................................................................... 78

Selecting ‘Day / Year / Total’ Display Modes ........................................................................................... 78

Display Values in the ‘Day / Year / Total’ Display Modes ......................................................................... 79

Options .................................................................................................................................................... 80

The Setup Menu ........................................................................................................................................... 81

Default Settings ....................................................................................................................................... 81

Accessing the Setup Menu ..................................................................................................................... 81

Scrolling through Menu Items ................................................................................................................. 82

Menu Items in the Setup Menu ............................................................................................................... 82

Setting and Displaying Menu Items .............................................................................................................. 87

General Menu Item Settings ................................................................................................................... 87

Exiting a Menu Item ................................................................................................................................ 87

Setting Standby Mode - Manual Shutoff of Feeding Energy into the Grid ............................................... 87

Restoring the Grid Feed .......................................................................................................................... 88

Setting the Display Contrast .................................................................................................................... 88

Setting the Display Illumination ............................................................................................................... 89

Setting the Currency and Rate ................................................................................................................ 90

Setting the CO2 Reduction Factor .......................................................................................................... 91

Setting the Offset Value for Total Energy Display and Measurement Correction Value ........................... 92

Setting the Inverter Number .................................................................................................................... 94

Displaying and Setting Parameters in the ‘DATcom’ Menu Item .............................................................. 95

Setting the Time and Date....................................................................................................................... 96

Displaying the Status of the Fans............................................................................................................ 99

Displaying the Status of the Power Stage Sets ..................................................................................... 100

Displaying the Version........................................................................................................................... 101

Setup Lock function .................................................................................................................................... 104

General ................................................................................................................................................. 104

Activating/deactivating the "Setup Lock" function ................................................................................. 104

Status Diagnosis and Troubleshooting ....................................................................................................... 106

Displaying Status Codes ....................................................................................................................... 106

Normal Operation Status Codes ........................................................................................................... 106

Total Failure ........................................................................................................................................... 106

Power Stage Set Error Status Codes .................................................................................................... 107

Class 1 Status Codes ............................................................................................................................ 108

Class 2 Status Codes ............................................................................................................................ 109

Class 3 Status Codes ............................................................................................................................. 110

Class 4 Status Codes ............................................................................................................................. 112

Class 5 Status Codes ............................................................................................................................. 117

Customer Service.................................................................................................................................. 120

Maintenance............................................................................................................................................... 121

Safety .................................................................................................................................................... 121

General ................................................................................................................................................. 121

Opening the Fronius CL for Service/Maintenance ................................................................................ 121

Operation in Dusty Environments.......................................................................................................... 122

Replacing Solar Module Ground Fuses ..................................................................................................... 124

Safety .................................................................................................................................................... 124

Opening the Fronius CL ........................................................................................................................ 125

Replacing Solar Module Ground Fuses at the Positive Pole ................................................................. 126

Replacing Solar Module Ground Fuses at the Negative Pole ............................................................... 126

Closing the Fronius CL .......................................................................................................................... 127

Replacing Power Stage Sets...................................................................................................................... 128

Safety .................................................................................................................................................... 128

Opening the Fronius CL ........................................................................................................................ 128

Removing Defective Power Stage Sets ................................................................................................. 129

Sticker for Replacing Power Stage Sets ................................................................................................ 130

Inserting Replacement Power Stage Sets ............................................................................................. 131

Closing the Fronius CL .......................................................................................................................... 132

Technical Data ............................................................................................................................................ 133

Fronius CL 33.3 delta ............................................................................................................................ 133

Fronius CL 36.0 wye277 ....................................................................................................................... 135

Fronius CL 44.4 delta ............................................................................................................................ 137

Fronius CL 48.0 wye277 ....................................................................................................................... 139

Fronius CL 55.5 delta ............................................................................................................................ 141

Fronius CL 60.0 wye277 ....................................................................................................................... 143

Explanation of Footnotes ...................................................................................................................... 145

Field Adjustable Trip Points ................................................................................................................... 145

Relevant Standards and Directives ............................................................................................................ 146

Relevant Standards and Directives ....................................................................................................... 146

Grid Failure ........................................................................................................................................... 146

Warranty and Disposal ............................................................................................................................... 147

Fronius Manufacturer’s Warranty .......................................................................................................... 147

Disposal of Obsolete Equipment - Recycling ........................................................................................ 147

Protection of Persons and Equipment

Safety

Protection of Persons and Equipment

WARNING! An electric 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.

WARNING! If the equipment is used or tasks are carried out incorrectly, serious injury or damage may result. Only qualified personnel are authorized to install your inverter and only within the scope of the respective technical regulations. It is essential that you read the "Safety regulations" chapter before commissioning the equipment or carrying out maintenance work.

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

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

Galvanic Isolation

Monitoring the Grid

Information about Field Adjustable Trip Points

FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to

The inverter 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 (e.g., grid switch-off, interruption), your inverter will immediately stop operating and interrupt the supply of power into the grid.

Grid monitoring take place through:

- monitoring voltage

- monitoring frequency

- monitoring islanding conditions

The inverter is equipped with field adjustable trip points. For further information, please contact Fronius technical support at: pv-us-support@fronius.com.

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 / Interrupter

The inverter 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 positive or negative conductor of the PV array is grounded in the inverter via a fuse. If a ground fault occurs in the DC wiring, the inverter disconnects from the grid.

Standards and Regulations

Product Listings and Compliance

Your inverter complies with the requirements of the following standards „Inverters, converters and controllers for use in independent power systems“:

- UL1741

- IEEE 1547

- IEEE 1547.1

- ANSI/IEEE C62.41

- C22.2 No. 107.1-01

- FCC Part 15 B

The ground-fault detection and interruption comply with the NEC 690 building code requirements.

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

Warning notices affixed to the device

The interior of the inverter contains warning notices and safety symbols. These warning notices and safety symbols must NOT be removed, painted over or covered. The notices and symbols warn against operating the equipment incorrectly, as this may result in serious injury and damage.

Use in accordance with "intended purpose"

Field of application

Photovoltaic system stipulations

The Fronius CL solar inverter is designed exclusively to convert direct current from solar modules into alternating current and feed this power into the public grid. The following are deemed not in accordance with the intended purpose:

- Use for any other purpose, or in any other manner

- Alternations to the Fronius CL that are not expressly recommended by Fronius

- Installation of parts that are not expressly recommended or sold by Fronius

The manufacturer is not responsible for any damages resulting from unintended use. In addition, no warranty claims will be entertained.

Use in accordance with the "intended purpose" also includes:

- following all the instructions in these operating instructions

- carrying out all the specified inspection and servicing work

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

The inverter is designed exclusively to be connected and used with solar modules. Use with other DC generators (e.g., wind generators) is not permitted.

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

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

Operating Principle

Fully Automatic Operational Management

The MIX cept

Con-

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

The control system of the inverter 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).

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

MIX = Master Inverter X-change

In the MIX concept, several smaller power stage sets operate instead of one large power stage set:

- When irradiance is low, only 1 - 3 power stage sets turn on in the inverter.

- In this way, the power stage sets operate in a higher partial-load range than a large power stage set.

- The energy can then be converted more efficiently, thus significantly increasing the efficiency.

- The control software alternately assigns the “master power stage set” function to all the power stage sets.

- When irradiance is high, the other power stage sets switch on in sets of 3.

- The “master power stage set” coordinates and controls the operation of the other power stage sets.

- Operating hours per power stage set are decreased, and the service life of the power stage sets is increased along with the yield for partial-load operation.

Reliability

Power Derating

The MIX concept ensures a high degree of reliability due to the number of independent power stage sets: if one power stage set fails, the remaining power stage sets take over for it. Thus energy losses are limited and only occur when irradiance is high.

If there is insufficient heat dissipation despite the fan operating at maximum speed (for example, inadequate heat transfer away from the heat sinks), the power will be derated to protect the inverter.

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

Forced Ventilati-onThe inverter is cooled through forced

ventilation via 2 temperature-controlled fans mounted in the doors. The air drawn in at the front flows into a closed channel through the individual racks containing the power stage sets and then is discharged out the top. The closed air channel ensures that the power stage sets do not come into contact with the outside air. This ensures that the power stage sets do not get dirty. The fan speed and the temperature of the supply air are monitored.

The power stage sets are hermetically sealed and have their own fans for circulating the air in the power stage set racks.

The inverter’s speed-controlled fans with ball bearing support ensure:

- optimal inverter cooling

- higher efficiency

- cooler components, thus improving service life

- lowest possible energy consumption and noise level

The Fronius CL Unit in the PV System

General

Tasks

The Fronius CL solar inverter is the highly complex link between the solar modules and the public grid.

Inverter

PV Array

Main AC Load Center

Energy Meter

The main tasks of the inverter include:

- Converting DC into AC current

- Fully automatic operation management

- Display function and data communication

Converting DC into AC Current

Display function and data communication

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

The display on the inverter is the interface between the inverter and the operator. The display has a user-friendly design.

The inverter 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.

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

Data Communications Components

Fronius Com Card

Fronius Modbus Card

The inverter is designed for various data communications components, e.g.:

- Fronius Datalogger Card / Box

- Fronius Datalogger Web

- Fronius Sensor Card / Box

Data communications components are available as plug-in cards or versions with an external housing. Depending on the version, the inverter can accommodate up to 2 option cards in addition to the standard Fronius Com Card.

The Fronius Com Card enables the inverter to communicate with other inverters or external data communications components such as Datalogger, String Controls or third party system monitoring devices.

The Fronius Modbus Card is a system upgrade used to retrieve data from an inverter via the Modbus protocol. The Modbus protocol is a master/slave architecture-based communication protocol. The Fronius Modbus Card communicates with the Modbus Master using register addresses. The Fronius Modbus Card comes standard with the inverter.

Detailed information about the Fronius Modbus Card according to the enclosed "Fronius Modbus Card" operating instructions.

- Fronius Interface Card / Box

- Fronius String Control 250/25

Fronius Datalogger

Fronius Sensor Card / Box

Fronius Interface Card and Fronius Interface Card easy

Control 250/25

The Fronius Datalogger is used to record and manage data from a photovoltaic system using a PC.

The Fronius Sensor Card / Box is used to integrate various sensors into Solar Net (e.g., for temperature, irradiance).

The Fronius Interface Card and the Fronius Interface Card easy are RS 232 interfaces for transmitting various kinds of system data in an open protocol format.

The Fronius String Control 250/25 is used to combine and monitor solar module strings.Fronius String

Inverter Product Description

Inverter Product Description (doors closed)

(1)

(3)(2)

(1)(4)

(13)

(12)

(11)

(10)

(5)

(6)

(7)

(8)

(9)

Item Description

(1) Ring bolt for transporting by crane (4 x)

(2) Door latch top left

(3) Door latch top right (can be locked)

(4) Exhaust air hood

(5) DC main switch, can be locked when turned off

Important! The doors cannot be opened when the DC main switch is turned on.

(6) Control units (display, keys, Operating Status LED)

(7) Fan cover right

(8) Door latch bottom right (can be locked)

(9) Mounting base with removable side parts

Height 5.91 in. (150 mm)

(10) Fork pockets for forklift

(11) Door latch bottom left

Closed Inverter Product Description

(continued)

Inverter Product Description (doors opened)

Item Description

(12) Fan cover left

(13) AC main switch, can be locked when turned off

Important! The doors cannot be opened when the AC main switch is turned on.

(5)

(6)

Item Description

(1) Door catch right

(2) Cover right

(3) Cover left

(4) Door catch left

(5) Cover top

(6) Power stage set racks

(max. 15)

(2)

(3)(4)

(1)

- The connection area for AC and DC is located under the left cover.

- The connection area for data communication and other options is located under the right cover.

Connection Area Product Description

DC-

DC+

Grounding

terminal

(1)

(2)

(3)

(4)(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

Item Description

(1) Base cover

(2) DC+ terminal

(3) DC- terminal

(4) AC terminal - phase conductor L1

(5) AC terminal - phase conductor L2

(6) AC terminal - phase conductor L3

(7) AC terminal - neutral conductor N

(8) Ground terminal (e.g., for grid grounding, grounding electrode,

(equipment grounding, etc.)

(9) Fuse holder for grounding solar modules either at the positive or at

the negative pole

(10) 2 isolated relay contacts, e.g., for connecting and controlling

external ventilation:

- with terminals

- with a strain-relief device

(11) Option area

- with standard Fronius Modbus Card for data communication via Modbus RTU Protocol

- with a strain-relief device

Fronius CL - WYE277:

- with 2 free slots for option cards

Fronius CL - DELTA

- with 1 free slot for an option card

- with standard NL-MON plug-in card

(12) Holder for an option box (e.g., Fronius Datalogger Box)

Terminals in the Area of the Isolated Relay Contact

extern

L N

AC COM

S2 EXT NO SC2 NC NC SC1 NO

(1)

(2)

(4) (5) (6)

(3)

Item Description

(1) NO = normally open contact for relay contact 2

(2) SC2 = relay contact 2

(3) NC = break contact for relay contact 2

(4) NC = break contact for relay contact 1

(5) SC1 = relay contact 1

(6) NO = normally open contact for relay contact 1

NO = normaly open NC = normaly closed SC = switch contact

Installation and Connection Accessories

Cable cross-section: AWG 16 - AWG 6 Terminal tightening torque: 0.86 - 1.11 ft. lb. Max. current per relay output: AC max. 277 V / 10 A, DC max. 24 V / 10 A

For assigning various functions to the relay contacts see chapter ‘Installation and Startup’, section ‘Setting Relais Contact Functions’.

The inverter comes with several installation and connection accessories in a plastic bag fixed near the bottom to the left inverter side wall.

- 5 x metric screw M5 x 10 mm (3/8 in.)

- 5 x metric screw M5 x 16 mm (1/16 in.)

- 20 x metric hexagon nut M10, wrench size 17 mm (7/64 in.)

- 20 x two-part securing washer NL 10, outside diameter 16.6 mm (3/32 in.), pairwise pre-assembled

- 6 x metric hexagon nut M12, wrench size 19 mm (3/16 in.)

- 6 x two-part securing washer NL 12, outside diameter 19.5 mm (13/64 in.), pairwise pre-assembled

- 2 x copper ring, diameter 13 and 25 x 9.7 mm (33/64 and 63/64 x 3/8 in.)

- 8 x copper spacer

- 2 x fuse KLKD 30

- 1 x fuse KLKD 3

- 1 x lead through DG 36

Choosing the Location

Choosing the Location in General

Criteria for Location Selection

NOTE In order to protect the display, the inverter should not be exposed to

direct sunlight. Ideally, the inverter should be set up in a protected location, e.g., near the solar modules or under a roof overhang.

The inverter is designed for installation both indoors and outdoors.

NEMA 3R protection means that the inverter is not susceptible to water spray from any direction. However, Fronius recommends that the inverter not be exposed to direct moisture or to a direct water jet (e.g., from sprinklers).

Only set up on a firm, flat, level and fireproof surface

Max. ambient temperatures: -13 °F / 122 °F (-25 °C / +50 °C)

Height above sea level: up to 6562 ft. (2000 m)

Keep a min. side distance of 8.5 in. (216 mm) between each inverter or anything to the right or left of the inverters such as walls or DC and AC disconnects.

When installing more than one inverter, keep a distance of 1 in. (25.4 mm) between each inverter.

The distance between the upper edge of the inverter and the ceiling must be at least 8 in. (200 mm).

Unsuitable Locations

The air flow direction within the inverter is from front to top (cold air intake front, hot air exit top).

When installing the inverter in a closed space, it is necessary to ensure that the hot air that develops will be discharged by forced ventilation.

Do not install the inverter:

- in areas with large amounts of dust

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

- in areas with corrosive gases, acids or salts

- in areas where there is an increased risk of accidents caused by farm animals (horses, cattle, sheep, pigs, etc.)

- in stables or adjoining areas

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

- in storage or processing areas for fruit, vegetables or winegrowing products

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

- in greenhouses

Transport

Transport Any transportation equipment used to transport the inverter must be designed to ac-

commodate the weight of the inverter:

Fronius CL 33.3 DELTA / 36.0 WYE277 .................................................. 661.00 lbs. (300 kg)

Fronius CL 44.4 DELTA / 48.0 WYE277 .................................................. 721.00 lbs. (327 kg)

Fronius CL 55.5 DELTA / 60.0 WYE277 .................................................. 783.00 lbs. (353 kg)

The inverter can be transported as follows:

- using a crane at the ring bolts

- using a crane and forks

- using a forklift or lift truck

- manually

Crane Transport Using the Ring Bolts

WARNING! Falling devices can be deadly. When transporting the inverter

by crane

- Use all 4 ring bolts when transporting by crane

- Select a length for the sling gear (chains, rope, straps, etc.) so that the angle between the sling gear and the horizontal is at least 60°.

min 60°

Crane Transport Using Forks

WARNING! Falling devices can be deadly. When transporting the inverter

by crane using forks

- The forks must have a clearance height of at least 6 ft. 3 in. (approx. 1,900 mm)

- Insert the forks only into the fork pockets

- The forks should always be inserted completely into the fork pockets

- Secure the inverter so that it cannot slide off of the forks

min. 6 ft. 3 in.

(min. 1,900 mm)

Transport Using a Forklift or Lift Truck

WARNING! Falling or toppling devices can be deadly.

- Insert the forks of the forklift or lift truck only into the fork pockets

- The forks should always be inserted completely into the fork pockets

- Secure the inverter so that it cannot slide off of the forks

- Do not turn, brake, or accelerate in a sudden, jerking manner

Manual Transport The inverter can also be transported manually if a crane, forklift or lift truck cannot be

used.

NOTE At least 4 adults are required to manually transport the inverter. Fronius recommends that you remove the power stage sets from the inverter to reduce its weight for manual transport.

Removing Power Stage Sets

Opening the Fronius CL

Removing Power Stage Sets

WARNING! An electrical shock can be fatal. Danger from grid voltage and DC voltage from solar modules. Do not remove power stage sets under load. Before removing power stage sets, make sure that the AC and DC main switches are turned off in the device interior.

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.

- Unscrew the screws at the 4 rails (4 x 5 screws)

- Remove the 4 rails

- Remove the power stage sets

Requirements for Installing the Fronius CL

Additional External AC and/or DC Disconnect

Using the Mounting Base

Use of aluminum wires

Inverter Cabling

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. Contact your local authorities for additional information.

The inverter mustn't be installed or taken in operation without mounting base . The mounting base with a height of 5.9 in. (150 mm) is primarily used for inverter cabling.

The AC- and DC-side terminals are designed for connecting single-wire, round, aluminum wires.

NOTE Take into account local specifications when configuring cable cross sections!

For sizing AC and DC cables see section ‘Cross Section of AC and DC Wires’ in these operating instructions.

NOTE Only use water tight conduit fittings and conduits for inverter cabling. Conduit fittings and conduits are not included with the inverter.

Side Cabling

AC and DC wires as well as data communication cables and grounding cables can be fed into the inverter as follows:

- From the side over the mounting base

- From below

NOTE Side cabling is only permitted over the mounting base. Do not make any cable input openings on the side walls of the inverter.

min. 24.4 in. min. 620 mm

Side Cabling

Bottom Cabling

- All AC and DC cables, grounding cables and data communictaion cables to be

connected must protrude out of the base at least 24.4 in. (620 mm) before inverter setup.

- If possible, data communications cables for connecting option cards should also

protrude out of the base.

- Cables must be positioned as per the „Space Requirement (Top View)“ illustration

so that there will be sufficient space for setting up the inverter.

Legend for “Space Requirement (Top View)“ illustration:

Area for cabling

min. 24.4 in. min. 620 mm

Outline of inverter

Drilling pattern for fixing the mounting base

Bottom Cabling

27.00 in.

2.5 in

63 mm

685 mm

14.7 in. 373 mm

6.4 in. 161 mm

43.5 in.

1,106 mm

27.3 in.

41.1 in.

1,043 mm

3.7 in.

95 mm

4.6 in.

117 mm

692 mm

1.9 in.

49 mm

DATCOM

Space Requirement (Top View)

2.1 in. 53 mm

24.0 in. 610 mm

25.0 in. 634 mm

Fronius CL Installation

Safety

Preparing AC and DC Wires

WARNING! Toppling or falling devices can be deadly. Install the inverter on

a level and stable surface.

(620 - 820 mm)

24.4 - 32.3 in.

- Cut the AC and DC cables as well as grounding cables so that 24.4 - 32.3 in. (620 - 820 mm) protrudes from the

0.8 in

(20 mm)

base

- Strip the AC cable so that approx. 0.8 in. (20 mm) of the insulation remains

- Strip AC wires and grounding cables

- Attach the cable lugs

- Strip DC wires and DC grounding

cables

- Attach the cable lugs

Positioning the Mounting Base

NOTE When positioning the mounting base, make sure that the AC and DC

wires, grounding cables and data communication cables on the left are located 3.7 in. (95 mm) up to a max. of 8.4 in. (212 mm) from the left outside edge of the mounting base.

Installation of several inverters

Side distance to wall: a = min. 8.4 in.

b = 3.7 in

(95 mm)

(max. 117 mm)

(min. 212 mm)

Area for cabling:

Distance:

c = max. 4.6 in.

NOTE When installing several inverters side by side, keep a minimum side distance of 1 in. (25.4 mm) between the inverters.

This minimum side distance is guaranteed by mounting the spacer on the inverter’s optional mounting base. The next inverter can be attached directly to the spacer of the previous inverter.

Spacer mounted on mounting base

The spacer is delivered with the mounting base. For mounting the spacer on the mounting base follow the work steps beside.

Installation of

turn up for easier handling

several inverters

(continued)

For installing the inverters back-to-back the mounting bases can be attached directly to each other.

Important Take care of the mounting base’ front edge and back edge!

Installing the Mounting Base

(continued)

Important Different dowels and screws are required for installation of the mounting base depending on the surface used. Therefore, dowels and screws are not included with the inverter. The installer is responsible for selecting the proper dowels and screws.

NOTE To avoid warping of inverter doors, the mounting base should only be attached in a 100% level position.

Preparing the Fronius CL

CAUTION! An inadequate grounding conductor connection can cause serious injuries to persons and damage to (or loss of) property. The screws on the covers provide an adequate grounding conductor connection for the housing ground and should not under any circumstances be replaced by other screws that do not provide a proper grounding conductor connection.

- Open inverter

- Remove 2 x 2 screws

- Remove 2 covers

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

7 x

- Remove 7 screws

- Remove the base cover

Preparing the Fronius CL

(continued)

Important Use a suitable tool to knock out wire input openings from the base cover corresponding to the diameter of the AC and DC wires / conduits. Follow all safety instructions from the tool manufacturer.

- Knock out wire input openings for AC

and DC wires, for grounding cables and data communication cabels

Positioning the Fronius CL on the Mounting Base

2.00 in. max. 6.02 in.

WARNING! Toppling or falling devices can be deadly. When sliding the inverter back on the mounting base, make sure that the inverter does not slip off the mounting base sideways.

NOTE When positioning the inverter on the mounting base, make sure that

- The AC and DC wires, grounding cables and data communication cables are not broken, kinked, crushed or otherwise damaged in any way

- The 2 square tubes for the fork pockets are in the corresponding openings on the mounting base.

Positioning the Fronius CL on the Mounting Base Using a Crane

The inverter can be positioned on the mounting base as follows:

- Using a crane

- Using a crane and forks, a forklift or a lift truck

- Manually

- Position the inverter over the mounting base using a crane

- Insert AC and DC wires, grounding cables and data communication

- Lower the inverter onto the mounting base

- Slide the inverter backwards until it engages at the stop

cables into the inverter

Positioning the Fronius CL on the Mounting Base Using a Crane and Forks, a Forklift or a Lift Truck

Manually Positioning the Fronius CL on the Mounting Base

- Position the inverter over the mounting base, e.g., using a forklift

- Insert AC and DC wires, grounding cables and data communication cables into the inverter

- Lower the inverter onto the mounting base

- Slide the inverter backwards until it engages at the stop

- Position the inverter on the mounting base so that the back edge of the inverter lies on the front edge of the mounting base

- Carefully tip the inverter forward

- Insert AC and DC wires, grounding cables and data communication cables into the inverter

- Lower the inverter onto the mounting base

- Slide the inverter backwards until it engages at the stop

Securing the

Fronius CL to the Mounting Base

7 x

Tightening torque: 6.39 ft. lb.

Tightening torque: 2.21 ft. lb.

- Run AC and DC wires, grounding cables and data communication cables through the wire input openings that you made in the base cover

- Replace base cover

- Secure base cover using 7 screws

NOTE To prevent damage to the AC and DC wires from the rough edges of wire input openings, run the wires through conduits or install a suitable edge guard (e.g., a rubber bushing).

Tightening torque:

1.48 ft. lb.

- Place front cover to the mounting base

- secure front cover with 2 x 2 screws

Cross Section of AC and DC Wires

Maximum Wire Cross Section

Minimum 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 carried out 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 up to a max. 350 MCM, min. 194 °F (90 °C) for all AC cable connections to the Fronius CL.

- Use copper wire up to a max. 350 MCM, min. 194°F (90°C) for all DC cable connections to the Fronius CL.

- Use copper wires for all grounding cables.

- See NEC section 250 for correct grounding.

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

AC copper wires:

Fronius CL AC wire AC wire AC wire

208 V 240 V 277 V

33.3 DELTA AWG 2 AWG 2 -

44.4 DELTA AWG 1/0 AWG 1/0 -

55.5 DELTA AWG 2/0 AWG 2/0 -

36.0 WYE277 - - AWG 6

48.0 WYE277 - - AWG 4

60.0 WYE277 - - AWG 3

Minimum cross section of AC copper wires (for an ambient temperature of 122 °F / 50 °C)

AC aluminium wires:

Fronius CL AC wire AC wire AC wire

208 V 240 V 277 V

33.3 DELTA AWG 1/0 AWG 1/0 -

44.4 DELTA AWG 3/0 AWG 3/0 -

55.5 DELTA 250 MCM 250 MCM -

36.0 WYE277 - - AWG 4

48.0 WYE277 - - AWG 2

60.0 WYE277 - - AWG 1

Minimum cross section of AC aluminium wires (for an ambient temperature of 122 °F / 50 °C)

NOTE Voltage drop and other considerations may dictate larger size wires be used.

Minimum Cross Section of DC Wires

Size the DC wire according to the max. DC current of the connected PV array:

The required wire cross section can also be achieved by using 2 wires. In this case, the cross section of both wires should be about the same size.

NOTE Voltage drop and other considerations may dictate larger size wires be used.

Cable Lugs for AC and DC Wires

Either single hole cable lugs or double hole cable lugs can be used for AC, DC and grounding wires as per the following specification:

max

AC 0.4 in. 1.6 in. 1.5 in.

max

(M10) (40 mm) (38.1 mm)

DC 0.5 in. 1.6 in. 1.5 in.

(M12) (40 mm) (38.1 mm)

GND 0.4 in 1.6 in. 1.5 in.

(M10) (40 mm) (38.1 mm)

GET 0.4 in 1.6 in. 1.5 in.

(M10) (40 mm) (38.1 mm)

Cable lugs must meet national specifications and guidelines.

Connecting the Fronius CL to the Public Grid (AC)

Overview of Available Power Grids

Fronius CL inverters can be connected to the following power grids:

Grid Inverter

208 V Delta

Fronius CL 33.3 DELTA Fronius CL 44.4 DELTA Fronius CL 55.5 DELTA

120 °

208 V

12 0 °

120 V

208 V

L2L3

Fronius CL 33.3 DELTA Fronius CL 44.4 DELTA Fronius CL 55.5 DELTA

12 0 °

208 V

120 V

120 °

208 V

208 V Delta: 120 V WYE

120 °

208 V

120 V

208 V

240 V Delta

120 °

240 V

120 °

240 V

12 0 °

Fronius CL 33.3 DELTA Fronius CL 44.4 DELTA Fronius CL 55.5 DELTA

120 °

240 V

L2L3

Overview of Available Power Grids

(continued)

Grid Inverter

480 V Delta: 277 V WYE

Fronius CL 36.0 Fronius CL 48.0 WYE277 Fronius CL 60.0 WYE277

12 0 °

120 °

480 V

277 V

480V

277 V

WYE277

480 V

480 V Delta

120 °

480 V

120 °

480 V

12 0 °

NOTE Do not connect Fronius CL inverters to the 480 V Delta power grid.

120 °

480 V

L2L3

Monitoring the Grid

AC Terminals

NOTE For optimal functioning of grid monitoring, the resistance in the leads

to the AC-side terminals must be as low as possible.

Legend:

DC+ DC- L1 L2 L3 N

L1 AC terminal for phase conductor L1 L2 AC terminal for phase conductor L2 L3 AC terminal for phase conductor L3 N AC terminal for neutral conductor N

Ground terminal

NOTE

- The neutral conductor is not bonded to ground internally.

- Make sure that the grid neutral conductor is grounded.

CAUTION! Danger of damaging the inverter due to improperly connected wires. Improperly connected wires can cause thermal damage to the inverter and may cause a fire. When connecting AC and DC wires:

- only use the installation and connection accessories as part of the shipment

- make sure that all cable connections are properly secured applying the correct tightening torque.

CAUTION! Danger of damaging the inverter by overloading the grid neutral conductor.

- Do not combine 3-phase devices on one phase

- Do not operate multi-phase devices as single-phase under any circumstances

Possible Connections to the Ground terminal

The following components can be connected or grounded at the ground terminal:

Grounding electrode: may be required depending on local regulations

Grounding of photovoltaic components (e.g., solar module frames): The size of the wire usually corresponds to the largest wire in the DC system.

Grid grounding / Grounding conductor: The inverter must be connected via the ground clamp to the AC grid grounding.

NOTE

- Use copper or aluminum wires for all grounding cables

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

- See NEC section 250 for correct grounding.

Safety

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

DC voltage from solar modules.

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

- Only a licensed electrician is permitted to connect this inverter to the public grid.

- Power stage sets should only be opened by Fronius-trained service personnel.

Two-part securing washers in two sizes are included with the installation and

radial teeth: outside

connection accessories. These two-part securing washers with cam faces on one side and radial teeth on the opposite side are pairwise pre-assembled, cam face to cam face.

cam faces: inside

pairwise pre-assembled

NOTE If a two-part securing washer is split, make sure that the two parts are mounted cam face to cam face only!

Connecting aluminium wires

NOTE When connecting aluminium wires::

- observe national and international guidelines regarding the connection of aluminium wires

- follow the instructions of the wire manufacturer

- check every year that the wires are securely attached in accordance with the specified torque

- follow the connection requirements listed below

Connection Requirements:

1. Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.

IMPORTANT Do not use brushes, files or sandpaper. Aluminum particles may get stuck and can transfer to other cables.

2. After removing the oxide layer of the cable end, rub in an acid- and alkali-free grease.

3. Then immediately fix it to a cable lug suitable for aluminium wires.

Repeat the steps above whenever the cable is disconnected and then reconnected.

Connecting the Fronius CL to the Public Grid (AC)

NOTE The phases should be connected in the proper order: GND, L1, L2, L3

and N.

OFF

DC-DC+

Tightening torque: 22.17 ft. lb.

NL10

M10

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

AC Connection Examples

(3)

(2)

Recommendation for the ACside Overcurrent Protection

(3)

(2)

(1)

AC connection with single hole cable lug

(3) (2)

(4)

AC connection with double hole cable lug

(1) single hole cable lug (2) metric hexagon nut M10, wrench size 17 mm (7/64 in.) (3) two-part securing washer NL 10, outside diameter 16.6 mm (3/32 in.) (4) double hole cable lug

NOTE To reduce the risk of fire, connect only to a circuit provided with branch circuit overcurrent protection in accordance with the National Electrical Code, ANSI / NFPA 70, at a MAXIMUM of:

Fronius CL Overcurrent Protection

208 V 240 V 277 V

33.3 DELTA 125 A 100 A -

44.4 DELTA 175 A 150 A -

55.5 DELTA 200 A 175 A -

36.0 WYE - - 60 A

48.0 WYE - - 80 A

60.0 WYE - - 90 A

Connecting DC Wires to the Fronius CL

CAUTION! Danger of damaging the inverter due to improperly connected

wires. Improperly connected wires can cause thermal damage to the inverter and may cause a fire. When connecting AC and DC wires:

- only use the installation and connection accessories as part of the shipment

- make sure that all cable connections are properly secured applying the correct tightening torque.

General Information about Solar Modules

Safety

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

- The open circuit voltage of the solar modules increases as the temperature decreases (assuming constant irradiance). The open circuit voltage should never rise above 600 V regardless of temperature and an irradiance of 1000 W/m². If the open circuit voltage exceeds 600 volts, the Fronius CL 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 at 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.

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

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

- Only a licensed electrician is permitted to connect this inverter to the public grid.

- Power stage sets should only be opened by Fronius-trained service personnel.

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 carried out 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 wires for all grounding cables.

- See NEC section 250 for correct grounding.

- 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.

Safety

(continued)

DC Terminals

Two-part securing washers in two sizes are included with the installation and

radial teeth: outside

connection accessories. These two-part securing washers with cam faces on one side and radial teeth on the opposite side are pairwise pre-assembled, cam face to cam face.

cam faces: inside

pairwise pre-assembled

NOTE If a two-part securing washer is split, make sure that the two parts are mounted cam face to cam face only!

DC+ DC- L1 L2 L3 N

Connecting aluminium wires

NOTE When connecting aluminium wires::

- observe national and international guidelines regarding the connection of aluminium wires

- follow the instructions of the wire manufacturer

- check every year that the wires are securely attached in accordance with the specified torque

- follow the connection requirements listed below

Connection Requirements:

1. Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.

IMPORTANT Do not use brushes, files or sandpaper. Aluminum particles may get stuck and can transfer to other cables.

2. After removing the oxide layer of the cable end, rub in an acid- and alkali-free grease.

3. Then immediately fix it to a cable lug suitable for aluminium wires.

Repeat the steps above whenever the cable is disconnected and then reconnected.

Connecting DC Wires

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 Connection Examples

DC+ DC- L1 L2 L3 N

NL12

M12

Tightening torque 22.17 ft. lb.

(3)

(2)

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

(3) (2)

(1)

DC connection with single hole cable lug and one cable

DC connection with double hole cable lug and one cable

Important When connecting 2 wires make sure that both cable lugs are placed upon each other upside down.

1 2

(5)

(4)

DC Connection Examples

(continued)

(3)

(2)

(6)

(3)

(2) (5)

(1)(1)

(4)

(1)

DC connection with single hole cable lug and three cables

DC connection with double hole cable lug and three cables

NOTE When connecting three cables consider an overcurrent protection according to NEC article 240!

(1) single hole cable lug (2) metric hexagon nut M12, wrench size 19 mm (3/16 in.) (3) two-part securing washer NL 12, outside diameter 19.5 mm (13/64 in.) (4) double hole cable lug (5) copper ring, diameter 13 and 25 x 9.7 mm (33/64 and 63/64 x 3/8 in.) (6) copper spacer

(2)

(3) (5)

(4)

Fronius CL Solar Module Ground

General The inverter allows you to ground solar modules via a fuse in the connection area either

at the negative pole or the positive pole.

Solar Module Ground via Fuse

L L L N

(2)

1 2 3

(1)

(1) Fuse holder for solar module ground at the positive pole (2) Fuse holder for solar module ground at the negative pole

(1)

DC+

(2)

DC-

(3)

DC+

DC-

(3)

(2)(1)

L L L

1 2 3

Solar Module Ground at Negative Pole (Fuse Holder for Solar Module Ground at Positive Pole Not Used)

(1) Solar module (2) Inverter (3) Fuse

Depending on the inverter output, Fronius recommends fuses with the following nominal current values for the solar module ground:

- Fronius CL 33.3 DELTA:2 A

- Fronius CL 44.4 DELTA:2 A

- Fronius CL 55.5 DELTA:3 A

Fuse dimensions: 13/32 x 1 1/2 in. (10 x 38 mm)

Solar Module Ground at Positive Pole (Fuse Holder for Solar Module Ground at Negative Pole Not Used)

- Fronius CL 36.0 WYE:2 A

- Fronius CL 48.0 WYE:2 A

- Fronius CL 60.0 WYE:3 A

Safety

WARNING! An electrical shock can be fatal. Normally grounded conduc-

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

WARNING! An electrical shock can be fatal. Danger from DC voltage from solar modules. The DC main switch is only used to switch off power to power stage sets. When the DC main switch is turned off, any solar module ground installed remains unaffected. Never touch the DC+ and DC-.

Solar Module Ground at Negative Pole

Solar Module Ground at Positive Pole - Inserting Fuse

The Fronius CL is designed for a solar module ground at the negative pole. The inverter comes supplied with a corresponding fuse in the right fuse holder for a solar module ground at the negative pole. The left fuse holder for the solar module ground at the positive pole must have a plastic bolt inserted.

NOTE Do not connect the ground to the negative DC line at any point! This is already done within the inverter. If negative DC lines are connected to the DC terminals or prior to this to the ground, this will circumvent the GFDI protection system, preventing your inverter from properly detecting a fault current. In addition, turning the DC disconnect to the OFF/open circuit condition will not disconnect the array from ground, as it only disconnects the DC positive.

The Fronius CL is designed for a solar module ground at the negative pole. For solar module ground at the positive pole the fuse must be inserted into the corresponding fuse holder as follows:

Important The right fuse holder for the solar module ground at the negative pole must have a plastic bolt inserted.

Inserting the fuse at the positive pole grounds the solar module.

When the solar module is grounded at the positive pole:

NOTE Do not connect the ground to the positive DC line at any point! This is already done within the inverter. If positive DC lines are connected to the DC terminals or prior to this to the ground, this will circumvent the GFDI protection system, preventing your inverter from properly detecting a fault current. In addition, turning the DC disconnect to the OFF/open circuit condition will not disconnect the array from ground, as it only disconnects the DC negative.

Inserting Power Stage Sets

Overview A sticker is located in the inverter on the top cover. The sticker provides an overview of

the steps required for inserting power stage sets. A detailed description of the sticker can be found in ‘Troubleshooting and Maintenance’ in the ‘Replacing Power Stage Sets’ section.

General

One slot in the inverter is assigned to each power stage set rack. In order to avoid mixing up the slots, positioning bolts are used on the back of the power stage set racks and a corresponding recess is available for the slot.

Positioning Bolt on the Back of the Power Stage Set

Opening for the Slot

Slot Arrangement

Dip Switches for Identifying Power Stage Set Racks

PS 13PS 12

PS 14

PS 11PS 10PS 09

PS 08PS 07PS 06

PS 05PS 04PS 03

PS 01PS 00

PS 02

A dip switch on the front of the power stage set is used to identify each individual power stage set in the inverter. The dip switch must be set exactly for each individual slot.

Dip Switch Settings for Each Slot

Dip Switches on the Front of the Power Stage Set

110 0

PS 12

1001

PS 09

0110

PS 06

0011

PS 03

0000

PS 00

110 1

PS 13

1010

PS 10

0111

PS 07

0100

PS 04

0001

PS 01

1110

PS 14

1011

PS 11

1000

PS 08

0101

PS 05

0010

PS 02

Inserting Power Stage Sets

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.

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

NOTE Check the following before inserting power stage sets into the inverter:

- The location of the positioning bolt

- Whether or not the dip switch is set for the slot

sets, the plastic front of the power stage set must be inserted flat against the side metal supports. If a power stage set cannot be inserted completely into the inverter, then the power stage set has been inserted into the wrong slot.

Important When inserting power stage

- Insert 4 rails

- Secure rails using 4 x 5 screws

Tightening torque: 1.84 ft. lb.

Application Example

Inserting power stage set PS 10:

- Insert positioning bolt into no. 10

- Set the dip switch for PS 10 as per „Dip Switch Settings for Each Slot“: 1 - 0 - 1 - 0

- Insert power stage set PS 10 into the slot for PS 10

PS 13PS 12

PS 01PS 00

PS 14

PS 11PS 10PS 09

PS 08PS 07PS 06

PS 05PS 04PS 03

PS 02

Slot for Power Stage Set PS 10

Closing the Fronius CL

CAUTION! An inadequate grounding conductor connection can cause

serious injuries to persons and damage to (or loss of) property. The screws on the covers provide an adequate grounding conductor connection for the housing ground and should not under any circumstances be replaced by other screws that do not provide a proper grounding conductor connection.

Tightening torque: 1.84 ft. lb.

- Replace covers

- Secure with screws

- Close doors

- Close door latches

Start-up Operation

Factory Pre-set Configuration

Requirements for Start-up Operation

Start-up Operation

Your Fronius CL has been pre-configured in the factory and is ready for operation. You only have to set the available power grid for start-up for the inverters.

To change your inverter settings, please see section ‘The Setup Menu’ in the chapter ‘Operation.’

- Fronius CL connected to the public grid (AC)

- Fronius CL connected to the solar modules (DC)

- All power stage sets inserted

- Power stage sets secured via rails

- All covers attached

- Doors closed and locked

NOTE Flip the AC main switch and the DC main switch to Position - ON only when:

- the inverter doors are totally closed

- the door latches are totally closed

1. If available, turn on the external AC disconnect

2. Flip AC main switch on the inverter to

position - ON -

3. Flip DC main switch to position - ON -

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 CL will begin shortly.

The screen displays the startup phase.

- Segment test

All display elements light up for about one second

- The inverter goes through a master check list for several seconds

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

Start-up Operation

(continued)

- The grid selection phase begins. ‘SETUPSEL’ is displayed.

4. Press the ‘Enter’ key

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

5. Select the public grid

Selecting 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

12 0 °

120 V

208 V

L2L3

12 0 °

208 V

120 V

120 °

208 V

120 °

208 V

120 V

208 V

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

120 °

Selecting the Public Grid

(continued)

120 °

240 V

L2L3

12 0 °

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

Grid voltage 480 V Delta: 277 V WYE

240 V

12 0 °

120 °

277 V

480V

277 V

120 °

480 V

277 V

480 V

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)

Startup Phase during Startup Operation

The startup phase restarts with the segment test.

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

- The Fronius CL goes through a master check list for several seconds The display shows ‘TEST’ and indicates the respective component that is being tested (for example, ‘LED’)

Startup Phase during Startup Operation

(continued)

- ‘TESTCOM’ is shown

- Synchronization with grid: ‘WAITPS’ is displayed, the inverter icon flashes: The Fronius CL is waiting for all power stage sets in the network to be on stand-by. This procedure takes place dependent on the DC voltage.

Next, the display shows ‘SYNCAC,’ the grid icon flashes

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

- Operation of feeding energy into the grid: After selecting the grid and when the tests are concluded, the Fronius CL 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 CL starts operating.

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

Setting inverter for solar module ground at the positive pole

If the inverter will be operated with solar modules that require a solar module ground at the positive pole, the corresponding grounding method must be set in the ‘Basic Service’ menu. For accessing the ‘Basic Service’ menu the access code ‘22742’ must be entered.

If solar modules are connected to the inverter that require a solar module ground at the positive pole, the status message 472 "Ground fault detected" will be displayed after the inverter is turned on and the startup phase is completed

1. Press the unassigned ‘Menu/Esc’ key 5 x

‘CODE’ is displayed, the first digit flashes.

2. Enter the access code 22742:

Use the ‘Up’ and ‘Down’ keys to select the value for the first digit of the access code

3. Press the ‘Enter’ key

The second digit flashes.

4. Repeat steps 2 and 3 for the second,

third, fourth and fifth digit of the access code until ...

... the access code flashes.

5. Press the ‘Enter’ key

The inverter is in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

Setting inverter for solar module ground at the positive pole

(continued)

6. Use the ‘Up’ or ‘Down’ keys to select the 'GNDMODE' parameter

7. Press the ‘Enter’ key

The set grounding mode is displayed.

8. Use the ‘Up’ and ‘Down’ keys to select the corresponding ‘POS GND’ grounding method:

POS = solar module ground at positive pole

9. Press the ‘Enter’ key to apply the required grounding mode

10. Press the ‘Esc’ key to exit the Basic Service menu

Selecting the Interface Protocol and Setting the Inverter Baud Rate

General

Entering the access code

If a data communication connection is required between the inverter and other Fronius data communication components, the ‘Interface protocol’ must be set in the ‘Basic Service’ menu.

1. Press the ‘Menu’ key

‘Menu’ is shown.

2. Select the ‘Setup’ mode using the

‘Left’ or ‘Right’ keys

3. Press the unoccupied ‘Menu/Esc’ key 5 x

‘CODE’ is displayed, the first digit flashes.

4. Enter the access code 22742:

Use the ‘Up’ and ‘Down’ keys to select a value for the first digit of the access code

5. Press the ‘Enter’ key

The second digit flashes.

6. Repeat steps 4 and 5 for the second, third, fourth and fifth digit of the access code until ...

... the access code flashes.

7. Press the ‘Enter’ key

Entering the access code

(continued)

The inverter is now in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

Selecting the interface protocol for communication with other data communication components

The inverter is in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

1. Use the ‘Up’ and ‘Down’ keys to select the ‘COMM’ parameter

2. Press the ‘Enter’ key

‘MODE’ is shown.

3. Press the ‘Enter’ key

The set protocol type is displayed.

4. Use the ‘Up’ and ‘Down’ keys to select the ‘IFP’ protocol type (interface protocol):

5. Press the ‘Enter’ key to apply the ‘IFP’ protocol type.

Selecting the interface protocol for communication with other data communication components

(continued)

The ‘IFP’ protocol type is applied, ‘MODE’ is displayed.

For setting the inverter baud rate without exiting the ‘Basic Service’ menu follow the steps in the enclosed section ‘Setting the Inverter baud rate’, starting from step 3.

6. Press the ‘Esc’ key 2 x to exit the ‘Basic Service’ menu

Setting the inverter baud rate

The inverter is in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

1. Use the ‘Up’ and ‘Down’ keys to select the ‘COMM’ parameter

2. Press the ‘Enter’ key

MODE’ is shown.

3. Use the ‘Up’ and ‘Down’ keys to

select the ‘IFP’ parameter

4. Press the ‘Enter’ key

‘BAUD’ is displayed

5. Press the ‘Enter’ key

Setting the inverter baud rate

(continued)

The set baud rate is displayed.

6. Use the ‘Up’ and ‘Down’ keys to select the desired baud rate: 2400 / 4800 / 9600 / 14400 / 19200

7. Press the ‘Enter’ key

The selected baud rate is applied, ‘BAUD’ is displayed.

8. Press the ‘Esc’ key 3 x to exit the ‘Basic Service’ menu

The inverter begins the startup phase after exiting the ‘Basic Service’ menu.

Setting the Relay Contact Functions

General According to the assigned relay contact functions the isolated relay contacts at the

inverter’s connection area can be used for several tasks, e.g.:

- connecting and controlling external ventilation

- giving out an acoustic or visual signal

Possible Functions of Relay Contacts

Function number

Activation criterion for the switch con-

tact

Power feed-in possible on DC side

Cabinet fan in operati-onCabinet fan not in

Max. interior temperature >/= 104 °F

5 Max. interior temperatu-

re >/= 122 °F

Triggering of continual3) and temporary4) service codes

Deactivation criterion2) for the switch contact

Power feed-in not possible on DC side

operation

Max. interior temperature </= 86 °F

Max. interior temperature </= 104 °F

Error confirmation per key press / per Solar Net command

Description

not available on US devices

Shut-down of external components over night (e.g., 60 Hz transformer)

External ventilation / air conditioning can be activated

Status display / Relay contact trips

Triggering of continual4) service codes

Error confirmation per key press / per Solar

Status display / Relay contact trips

Net command

Activation = switch contact closes / opens

Deactivation = switch contact opens / closes

Continual service codes (e.g., for an inverter malfunction or shutdown, when the

Inverter in feed-in mode

Inverter not in feed-in mode

Control of motorized stop valve

service code is displayed longer than 4 h 15 min.)

Temporary service codes (e.g., brief interruption of feed-in operation, a service code is triggered more than 50 x per day)

Entering the access code

The ‘Relay contact functions’ must be set in the ‘Basic Service’ menu.

1. Press the ‘Menu’ key

‘Menu’ is shown.

2. Select the ‘Setup’ mode using the ‘Left’ or ‘Right’ keys

3. Press the unoccupied ‘Menu/Esc’ key 5 x

‘CODE’ is displayed, the first digit flashes.

4. Enter the access code 22742:

Use the ‘Up’ and ‘Down’ keys to select a value for the first digit of the access code

5. Press the ‘Enter’ key

The second digit flashes.

6. Repeat steps 4 and 5 for the second, third, fourth and fifth digit of the access code until ...

... the access code flashes.

7. Press the ‘Enter’ key

The inverter is now in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

Setting the relay contact functions

The inverter is in the ‘Basic Service’ menu, the first parameter ‘MIX MODE’ is displayed.

1. Use the ‘Up’ and ‘Down’ keys to select the ‘GPSC CFG’ parameter

2. Press the ‘Enter’ key

‘SC1’ is shown.

3. Use the ‘Up’ and ‘Down’ keys to select the relay contact: SC1 = relay contact 1 SC2 = relay contact 2

4. Press the ‘Enter’ key

The set relay contact function is displayed, the digit flashes.

5. Use the ‘Up’ and ‘Down’ keys to select a value from 2 - 8 for the relay contact function as per section “Possible Functions of Relay Contacts“

6. Press the ‘Enter’ key The selected relay contact function is applied, the presently set relay contact is shown, e.g. ‘SC1’.

7. Press the ‘Esc’ key 3 x to exit the ‘Basic Service’ menu

Inserting Option Cards

Safety

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

DC voltage from solar modules.

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

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

- Power stage sets should only be opened by Fronius-trained service personnel.

- 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 CL

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

OFF

Opening the Fronius CL

(continued)

Inserting Option Cards

Connecting Option Cards, Laying Data Communication Wires

secure.

- no loose metal parts fall into the inverter

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

- Insert option cards into free slots and

- Remove strain-relief device

- Remove the knockouts

Connecting Option Cards, Laying Data Communication Wires

(continued)

Only when data communication cables run into the inverter from the side:

Important Use a suitable tool to break out the wire input openings corresponding to the diameter of the data communication cables from the side of the mounting base. Follow all safety instructions from the tool manufacturer.

NOTE Only use water tight conduit fittings and conduits for inverter cabling. Conduit fittings and conduits are not included with the inverter.

Conduit

NOTE To prevent damage to the data communication cables from the rough edges of wire input openings, install a suitable edge guard in the knockout and wire input opening on the side of the mounting base (e.g., a rubber bushing).

Tightening torque: 1.48 ft. lb.

Closing the Fronius CL

CAUTION! An inadequate grounding conductor connection can cause

Tightening torque: 1.84 ft. lb.

- Replace right cover

- Secure with screws

- Close doors

- Close door latches

Solar Net and Data Communication

Solar Net 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 that enables several inverters to be linked with the data communications components.

Solar Net is a bus system. A single cable is all that is required for one or more inverters to communicate with all data communications components.

Data Communication

The core of Solar Net and thus data communication is the Fronius Datalogger. It coordinates data transmissions and ensures that even large volumes of data are distributed and stored quickly and securely.

The ‘Fronius Com Card’ is used to integrate an inverter into Solar Net.

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

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

The first inverter with a ‘Fronius Com Card’ can be positioned up to 3281. ft. (1000 m) away from the last inverter or component.

Different data communications components are detected automatically by Solar Net.

In order to distinguish among several identical data communications components, each one must be assigned a unique number.

In order to uniquely identify each inverter in Solar Net, each inverter must also be assigned an individual number. You can assign individual numbers as per ‘The Setup Menu’ section in these operating instructions.

More detailed information on the individual data communication component can be found in the relevant operating instructions or online at http://www.fronius-usa.com.

Application Example

Logging and archiving data from the inverter and sensor using a Fronius Datalogger and Sensor Box:

Fronius CL

12 3

Com Card

IN OUT

Fronius CL

Com Card

Datalogger C.

IN OUT

RS 232

Sensor Box

IN OUT

°C

W/m²

m/s

Fronius CL

Com Card

OUT

Termination plug

Data network with 3 Fronius CL units and one Sensor Box:

- all Fronius CL units have one ‘Fronius Com Card’

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

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

Option cards communicate within the inverter via its internal network. External communication (Solar Net) takes place via ‘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.

Keys and Symbols

(1)

Keys and Symbols on the Inverter

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 selection

(4) ‘Menu / Esc’ key

for changing the menu level for exiting the Setup menu

(2)

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

(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 Power for the display comes from the solar modules via safety-low voltage. Therefore,

the display is available only during daylight hours.

Important The inverter display is not a calibrated measuring instrument. A slight deviation of a few percentage points is intrinsic to the system. A calibrated meter is required to make calculations for the utility company.

Display

(continued)

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

(13)

(12)

Display

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

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

(6)

(7)

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

Indicates the minimum value within the period of observation (depending on the display mode 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 directly related to the solar modules

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

... appears with data readings that are directly related to the inverter

(7) Area for display unit

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 settings)

indicates the output power at a given moment - independent from the display mode chosen. The screen displays % of the maximum possible output power of your solar inverter.

Operating Status LED

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

Position of Operating Status LED on the Inverter

Operating Status LEDExplanation

lights up green A green light starts as soon as the inverter has completed the

startup phase, and stays green as long as the operation of feeding power into the grid continues. It indicates problem-free 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 inverter 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 inverter 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’)

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’.

Startup Phase and Grid Feed-in Mode

Startup Phase

Test Procedure

The Fronius CL carries out a self test after being turned on automatically. Then a test of the public grid is carried out. 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 essential inverter components

- The inverter goes through a

master check list for several seconds

- The display shows ‘TEST’ and

indicates the respective component that is being tested (for example, ‘LED’)

3. Synchronization with grid

- ‘WAITPS’ is displayed, the inverter

icon flashes: The inverter is waiting for all power stage sets in the network to be on stand-by. This procedure takes place dependent on the DC voltage.

- Next, the display shows

‘SYNCAC,’ the grid icon flashes.

4. Startup test

- Before the inverter starts feeding

energy into the grid, the conditions of the grid are tested in accordance with local 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.

Operation of Feeding Energy into the Grid

- After the tests are completed, the inverter 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 inverter starts operating.

Navigation in the Menu Level

Activating Display Backlight

Automatic Deactivation of Display Illumination / Switching to the ‘Now’ Display Mode

Accessing Menu Levels

1. Press any key

The display backlight is activated.

If no key is pressed for 30 seconds or more, the display backlight will go off again. The setup menu also offers a choice between a permanently lit or permanently dark display.

If no key is pressed for 2 minutes,

- While power is being fed into the grid, the inverter automatically switches to the "Now" display mode and the present output power is displayed.

- If the inverter is not feeding power into the grid, the inverter automatically switches to the startup phase for synchronization with the grid.

The inverter switches to the "Now" display mode or startup phase from anywhere within the display modes or the Setup menu.

1. Press the ‘Menu’ key (1)

Accessing Menu Levels

Menu Levels

(1)

‘Menu’ appears on the display.

The inverter is now in the menu level.

From the menu level you can

- set the desired display mode

- access the Setup menu

Display Modes

Selecting a Display Mode

The following display modes are available for the inverter:

‘Now’ display mode ............. shows present time data

‘Day’ display mode ..............shows data for a period when DC power is present

‘Year’ display mode ............. shows data for the present calendar year - only available in

combination with optional Fronius Datalogger

‘Total’ display mode ............. shows data since your inverter first started operating

1. Access the menu level

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

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

Example: ‘Day’ Display Mode

(5)(6)(7)

The selected display mode is shown.

Overview of Display Values

Display Icon Unit Optional Display value mode

‘Now’ W - output power

V - AC grid voltage

A - output current

Hz - Grid frequency

V - DC array voltage

A - Module current

MOhm - insulation resistance

HH:MM x Time

° F - Supply air temperature

rpm - Speed of left fan

rpm - Speed of right fan

‘Day’ kWh / MWh - Energy supplied

‘Year’ ‘Total’

Currency - Yield

lb / T - CO2 reduction

W - Maximum output power

V - Maximum grid voltage

V - Minimum grid voltage

V - Maximum array voltage

HH:MM - Operating hours of the inverter

x Option

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

Display Values in the ‘Now’ Display Mode

Selecting the ‘Now’ Display Mode

Display Values in the ‘Now’ Display Mode

1. Select the ‘Now’ display mode

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)

(1) (2)

First Display Values in the ‘Now’ Display Mode

Output power

power supplied to the grid at the particular moment (Watts)

For Example, Phase Voltage for Phase L1

AC grid voltage

External conductor voltage (Volts)

- The phase voltage can be displayed by pressing the ‘Enter’ key.

- The phase voltage of the other phases can be displayed by pressing the ‘Up’ and ‘Down’ keys.

- You can return to the menu level by pressing the ‘Menu’ key.

Output current

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

Display Values in the ‘Now’ Display Mode

(continued)

For Example, Phase Current for Phase L3 (WYE)

For Example, Power Stage Set Current for Power Stage Set G1 (DELTA)

- You can display the phase current for WYE devices and the current of individual power stage sets for DELTA devices by pressing the ‘Enter’ key.

- You can display the phase current of other phases for WYE devices and the current of other power stage sets for DELTA devices by pressing the ‘Up’ and ‘Down’ keys.

- You can return to the menu level by pressing the ‘Menu’ key.

Grid frequency

(Hertz)

DC array voltage

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

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

Module current

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

GFDI status

If there is no ground fault in the system, ‘GFDIOK’ is displayed

NL-MON Communication

When there is communication with the ‘NL-MON’ plug-in card, ‘NLMONOK’ is displayed.

Time of day (optional Fronius Datalogger)

When the time on the inverter or on a dataloggere is changed, this changes the time on all devices connected via Solar Net.

Display Values in the ‘Now’ Display Mode

(continued)

Supply air temperature

Temperature of the supply air used to cool the inverter (° F) The area for unit display switches between ‘°F’ and ‘AMB.’

Speed of left fan - FAN 1

(rpm - revolutions per minute) The area for unit display switches between ‘RPM’ and ‘FAN1.’

Options

Speed of right fan - FAN 2

(rpm - revolutions per minute) The area for unit display switches between ‘RPM’ and ‘FAN2.’

If the DatCom component for the required options are not available, the message ‘N.A.’ (not available) is shown.

Display Values in the ‘Day / Year / Total’ Display Modes

General

Selecting ‘Day / Year / Total’ Display Modes

For the inverter, the day begins when it switches on. If the DC supply line is disconnected and no Fronius Datalogger is connected, 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 output power (Watts)

- maximum grid voltage (Volts)

If an optional Fronius Datalogger is available, the display values listed always apply to the whole day.

- minimum grid voltage (Volts)

- energy supplied (kWh)

- operating hours of the inverter

(1) (2)

First Display Value in the ‘Day’ Display Mode

(1) (2)

First Display Value in the ‘Total’ Display Mode

Important The ‘Year’ display mode is only supported when the Fronius Datalogger option is installed. This data communications component includes a real-time clock.

First Display Value in the ‘Year’ Display Mode

1. Selecting ‘Day / Year / Total’ Display

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

(1) (2)

Modes

The First Display Value in the ‘Day / Year / Total’ Display Mode is Shown.

next display value

Scroll back using the ‘Up’ key (1)

Display Values in the ‘Day / Year / Total’ Display Modes

Energy supplied

Energy supplied during the 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 inverter. 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 the 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.

‘The Setup Menu’ section describes how to set the currency and rate for the energy supplied. The factory setting depends on the respective country-specific setting.

CO2 reduction

CO2 emissions saved during the monitored period (lb or T, pounds or tons) The area for unit display switches between ‘lb,’ ‘T’ and ‘CO2.’

The CO2 meter gives an indication of CO2 emissions 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 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

Display Values in the ‘Day / Year / Total’ Display Modes

Maximum array voltage

Highest reading of array voltage (V) during observation period

(continued)

Operating hours

Indicates how long the inverter has been operating (HH:MM)

Duration of operation is shown in hours and minutes up to 999 h and 59 min (display: ‘999:59’). After that only full hours are displayed.

Although the inverter does not operate during the night, all sensor data are recorded around the clock.

Options If the DatCom component for the required options is not available, the message ‘N.A.’

(not available) is shown.

The Setup Menu

Default Settings

Accessing the Setup Menu

The inverter is designed for fully automatic operation. No manual control is necessary for feeding the power it generates into the grid.

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

1. Switch to the menu level (press the

(1)

(2)(3)(4)

‘Menu’ key)

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

3. Press ‘Enter’ (2)

‘Setup’ Mode Selected in the Menu Level

‘STANDBY’ Menu Item

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

Scrolling through Menu Items

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

Menu Items in the Setup Menu

Example: ‘STANDBY’ Menu Item

Example: ‘CONTRAST’ Menu Item

1. Access the setup menu

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

STANDBY

Manual activation / deactivation of Standby operation using the ‘Enter’ key

Unit Setting range Enter Factory setting ‘Standby’ deactivated

- During standby operation the electronic system of the power stage is switched off. No power is fed into the grid.

- The Operating Status LED flashes orange.

- The orange flashing Operating Status LED stops at dusk.

- After the subsequent sunrise, the power supply operation into the grid is resumed automatically (after completion of the startup phase the LED is illuminated green).

- Grid supply operation can be resumed at any time whenever the LED is flashing orange (deactivate ‘STANDBY’)

CONTRAST

set contrast on LCD display

Unit Setting range 0 - 7 Factory setting 7

Since contrast depends on temperature, it may be necessary to adjust the menu item ‘Contrast’ when ambient conditions change

Menu Items in the Setup Menu

(continued)

LIGHTMODE

default setting of display backlight

Unit Setting range AUTO / ON / OFF Factory setting AUTO

AUTO: The display backlight will stop 2 minutes after the last key has

been pressed.

ON: The display will remain illuminated whenever power is supplied

to the grid

OFF: The display backlight will be permanently off.

Important The ‘Light Mode’ menu item only applies to the display backlight. The LCD display will still remain on during operation. Its energy consumption is less than one mW (1/1000 W).

CASH

setting of currency and rate for invoicing the energy supplied

Unit Setting range Currency / Charge rate/kWh Factory setting USD

CO2 reduction factor setting

Unit lb/kWh Setting range 00.01 - 99.99 Factory setting 1.3

YIELD

Setting of

- an OFFSET value for the Total energy display

- a measurement correction value for the Day, Year and Total energy display

Unit Setting range OFFSET / CALI. Factory setting -

OFFSET Preset value for the energy supplied, added to the actual energy

supplied (e.g., transfer value at the exchange of the inverter) Setting range: 5 digits + SI prefix (k..., M...)

CALI. Preset correction value, so that the data shown on the inverter

display corresponds to the calibrated data shown on the electric meter Setting range: -5.0 - +5.0 % in increments of 0.1

Menu Items in the Setup Menu

(continued)

IG-NR

Number (address) setting for the inverter in a setup comprising multiple inverters linked together

Unit Setting range 01 - 99 (100th inverter = 00) Factory setting 01

Important Each inverter must be assigned its own address when using multiple inverters in a data communications system.

DATCOM

indicates status of data transmission, activates the Signal Card, resets the Personal Display Card and Interface Card

Unit Display range OKCOM / ERRORCOM / IFP Testing range SIGCDTEST / SIGCDNI, PDCDRST / PDCDNI, IFCDRST / IFCDNI,

TAC

Factory setting -

OKCOM Data connection available

ERRORCOM Data connection faulty or DATCOM is not installed

IFP Data transmission via interface protocol selected

SIGCDTEST Function test for the Fronius Signal Card option *)

SIGCDNI Fronius Signal Card not installed

PDCDRST Reset Fronius Personal Display Card

PDCDNI Fronius Personal Display Card not installed

IFCDRST Reset Fronius Interface Card

IFCDNI Fronius Interface Card not installed

TAC ON Function test for the Fronius Power Relay Card (TAC) option *)

*) The Fronius Signal Card and Fronius Power Relay Card

(TAC) options are not available for the Fronius CL. These functions were implemented without additional option cards on the "Snowball" PC board (fan controller) via the potential-free relays.

Menu Items in the Setup Menu

(continued)

TIME

setting of date and time

Unit DDMMYYYY, HH:MM Setting range Date / Time Factory setting -

The ‘Time’ menu item is only supported when the Fronius Datalogger option is installed.

STATEFAN

fan status indicator

Unit Display area N.I.FAN / SAFETYX and STOPX / SELF and TEST / O.K.FAN Factory setting -

N.I.FAN No communication between the inverter control unit (IG Brain)

and the fan controller (Snowball)

SAFETYX and Fans are stopped for safety reasons; STOPx ‘x’ describes the error:

0 ... general error (over-temperature, overcurrent) 1 ... left fan malfunction 2 ... right fan malfunction 3 ... left and right fan malfunction 4 ... fan in connection area malfunction 5 ... left fan and fan in connection area malfunction 6 ... right fan and fan in connection area malfunction 7 ... all 3 fans malfunction

SELF and TEST Running a self test

O.K.FAN Fans are OK and operating normally

When there is a communication connection and no self test has been run, you can trigger the fan controller self test by pressing the ‘Enter’ key.

- ‘TEST’ is displayed after pressing the ‘Enter’ key.

- Repressing ‘Enter’ triggers the fan controller self test. The display then switches back to the ‘STATEFAN’ menu item.

STATEPS

Status display of power stage sets PS00 max. PS14, the last error that has occurred can be displayed.

Important State 306 (Power Low) and 307 (DC-Low) appear naturally every morning and evening due to low solar irradiance. These status messages are not the result of a fault.

Menu Items in the Setup Menu

(continued)

VERSION

displays the version number and serial number of the electronic components (e.g., IG-Brain, power stage sets, display)

Unit Display area MAINCTRL / LCD / PS (PS00, PS01 ... PS14) /

SNOWBALL

Factory setting -

MAINCTRL Version information of the IG-Brain unit (inverter controller)

LCD Version information of the display

PS Version information of the power stage sets (PS00 - PS14)

SNOWBALL Version information of the Snowball PC board (controls the fan

among other things)

Setting and Displaying Menu Items

General Menu Item Settings

Exiting a Menu Item

1. Access the Setup menu

2. Use the ‘Up’ and ‘Down’ keys to select the desired menu item

3. Press the ‘Enter’ key

4. Use the ‘Up’ and ‘Down’ keys to change the value of the menu item

To save the changed values:

5. Press the ‘Enter’ key

- the changed values are saved in the menu item

- the presently selected menu item is shown

To not save the changed values:

5. Press the ‘Esc’ key

- the changed values are not saved in the menu item

- the presently selected menu item is shown

1. To exit a menu item, press the ‘Menu / Esc’ key

The menu level is displayed:

Setting Standby Mode - Manual Shutoff of Feeding Energy into the Grid

If no key is pressed for 2 minutes,

- the inverter switches to the ‘Now’ display mode from anywhere within the

Setup menu

- the display illumination turns off

- the present output power is displayed

1. Select the ‘Standby’ menu item

2. Press the ‘Enter’ key

Setting Standby Mode - Manual Shutoff of Feeding Energy into the Grid

(continued)

The display switches between ...

‘STANDBY’

and ...

‘ENTER’

The Standby mode is now activated (manual shutoff of feeding energy into the grid).

The Operating Status LED lights up orange.

Restoring the Grid Feed

Setting the Display Contrast

1. Select the ‘Standby’ menu item

2. Press the ‘Enter’ key

The inverter switches to the Startup phase.

After a successful startup, the Operating Status LED will be green. The present power feed will be displayed.

1. Select the ‘CONTRAST’ menu item

2. Press the ‘Enter’ key

Setting ‘7’ for maximum possible contrast is shown.

Setting the Display Contrast

(continued)

3. Use the ‘Up’ and ‘Down’ keys to select the desired level of contrast

Setting ‘0’ for the minimum possible contrast

4. Press the ‘Enter’ key to accept the setting

The set contrast is applied. The ‘Contrast’ menu item is displayed.

Setting the Display Illumination

1. Select the ‘LIGHTMODE’ menu item

2. Press the ‘Enter’ key

The ‘AUTO’ setting is shown.

3. Use the ‘Up’ and ‘Down’ keys to select the desired setting for the display illumination

4. Press the ‘Enter’ key to accept the setting

The display illumination setting is applied. The ‘LIGHTMODE’ menu item is displayed.

Setting the Currency and Rate

1. Select the ‘CASH’ menu item

2. Press the ‘Enter’ key

The currency is shown Factory setting = ‘USD’ The first of 3 characters flashes.

3. Use the ‘Up’ and ‘Down’ keys to select a letter for the first character

4. Press the ‘Enter’ key

The second digit flashes.

5. Repeat steps 3 and 4 for the second and third characters until ...

The set currency flashes.

6. Press the ‘Enter’ key

The currency is applied. The charge rate is displayed in kWh/currency factory setting = 0.14 USD / kWh The first digit flashes.

7. Use the ‘Up’ and ‘Down’ keys to select a value for the first digit (e.g.,

8. Press the ‘Enter’ key The second digit flashes.

9. Repeat steps 7 and 8 for the first, second and third digit after the decimal point until ...

Fronius Fronius CL USA Operating Instruction [EN]

Specifications and Main Features

Frequently Asked Questions

User Manual