/ Perfect Charging / Perfect Welding / Solar Energy
Fronius CL
36.0 / 48.0 / 60.0
Operating Instructions
Inverter for grid-connected photo-
EN-US
voltaic systems
42,0426,0077,EA 010-31032015
0
Dear reader,
Introduction Thank you for the trust you have placed in our company and congratulations on buying this
high-quality Fronius product. These instructions will help you familiarize yourself with the
product. Reading the instructions carefully will enable you to learn about the many different
features it has to offer. This will allow you to make full use of its advantages.
Please also note the safety rules to ensure greater safety when using the product. Careful
handling of the product will repay you with years of safe and reliable operation. These are
essential prerequisites for excellent results.
EN-US
1
2
Contents
Safety rules ................................................................................................................................................ 7
General Information 11
Protection of Persons and Equipment ....................................................................................................... 13
Safety.................................................................................................................................................... 13
Protection of Persons and Equipment .................................................................................................. 13
Galvanic isolation.................................................................................................................................. 13
Monitoring the grid ................................................................................................................................ 13
Warning notices affixed to the device ................................................................................................... 14
Utilization in accordance with "intended purpose" ..................................................................................... 16
Utilization in accordance with "intended purpose" ................................................................................ 16
Field of application ............................................................................................................................... 16
Photovoltaic system stipulations ........................................................................................................... 16
Functional principle .................................................................................................................................... 17
Functional principle ............................................................................................................................... 17
The MIXTM concept............................................................................................................................. 17
Reliability............................................................................................................................................... 17
Forced ventilation.................................................................................................................................. 18
Power derating...................................................................................................................................... 18
Solar module ground............................................................................................................................. 18
The Fronius CL unit in the PV system ....................................................................................................... 19
General ................................................................................................................................................. 19
Tasks .................................................................................................................................................... 19
Converting DC to AC Current ............................................................................................................... 19
Display function and data communication ............................................................................................ 19
System upgrades ....................................................................................................................................... 20
System upgrades .................................................................................................................................. 20
Fronius Com Card................................................................................................................................. 20
Fronius Datalogger Card....................................................................................................................... 20
Fronius Public Display .......................................................................................................................... 20
Fronius Interface Card .......................................................................................................................... 20
Fronius String Control 250/25 ............................................................................................................... 20
100 kohm Grounding Kit Option............................................................................................................ 20
Data Communication and Solar Net .......................................................................................................... 21
Solar Net and Data Interface ................................................................................................................ 21
Example ................................................................................................................................................ 21
Inverter product description ....................................................................................................................... 23
Closed inverter product description ...................................................................................................... 23
Open inverter product description......................................................................................................... 24
Connection area product description ......................................................................................................... 26
Connection area product description .................................................................................................... 26
Terminals in the area of the potential-free relays.................................................................................. 27
Possible functions of relay contacts...................................................................................................... 28
EN-US
Installation and Startup 29
Choosing the Location ............................................................................................................................... 31
Choosing the location in general........................................................................................................... 31
Criteria for location selection................................................................................................................. 31
Unsuitable locations.............................................................................................................................. 31
Transport.................................................................................................................................................... 32
Transport............................................................................................................................................... 32
Crane transport ..................................................................................................................................... 32
Transport using a forklift or lift truck...................................................................................................... 32
Manual transport ................................................................................................................................... 32
Removing power stage sets....................................................................................................................... 33
Opening the Fronius CL........................................................................................................................ 33
Removing power stage sets.................................................................................................................. 33
Setting up the Fronius CL .......................................................................................................................... 34
3
Requirements........................................................................................................................................ 34
Recommendation for max. wire cross section ......................................................................................34
Preparing AC and DC wires.................................................................................................................. 35
Installing the mounting base ................................................................................................................. 36
Preparing the Fronius CL...................................................................................................................... 37
Safety.................................................................................................................................................... 37
Positioning the Fronius CL on the mounting base using a crane.......................................................... 38
Manually positioning the Fronius CL on the mounting base ................................................................. 38
Securing the Fronius CL to the mounting base..................................................................................... 39
Information regarding air supply and connection of an exhaust pipe.................................................... 40
Connecting the Fronius CL to the public grid (AC) .................................................................................... 41
Monitoring the Grid ............................................................................................................................... 41
AC connections..................................................................................................................................... 41
Connecting aluminum cables................................................................................................................ 41
Cross section of AC wires..................................................................................................................... 41
Safety.................................................................................................................................................... 42
Connecting the Fronius CL to the public grid........................................................................................ 42
Maximum AC-side overcurrent protection............................................................................................. 43
Connecting DC wires to the Fronius CL..................................................................................................... 44
General Information about Solar Modules ............................................................................................ 44
DC connections..................................................................................................................................... 44
Connecting aluminum cables................................................................................................................ 44
Max. cross section of DC wires............................................................................................................. 44
Safety.................................................................................................................................................... 45
Connecting DC wires ............................................................................................................................ 45
Connecting several DC wires................................................................................................................ 46
Fronius CL solar module ground................................................................................................................ 47
General ................................................................................................................................................. 47
Solar module ground via fuse or high ohm resistor .............................................................................. 47
Safety.................................................................................................................................................... 48
Setting inverters for grounded solar modules ....................................................................................... 48
Solar module ground at positive pole: Inserting fuse or "100 kohm Grounding Kit" option................... 49
Solar module ground at negative pole: Inserting fuse or "100 kohm Grounding Kit" option ................. 50
Inserting power stage sets ......................................................................................................................... 51
Overview .............................................................................................................................................. 51
General ................................................................................................................................................. 51
Slot arrangement .................................................................................................................................. 52
Dip switches for identifying power stage set racks ............................................................................... 52
Dip switch settings for each slot............................................................................................................ 53
Inserting power stage sets .................................................................................................................... 53
Closing the Fronius CL .............................................................................................................................. 54
Closing the Fronius CL ......................................................................................................................... 54
Inserting Option Cards ............................................................................................................................... 55
Safety.................................................................................................................................................... 55
Opening the Fronius CL........................................................................................................................ 55
Inserting option cards............................................................................................................................ 56
Connecting option cards, laying data communication wires ................................................................. 57
Closing the Fronius CL ......................................................................................................................... 59
Commissioning .......................................................................................................................................... 60
Factory Configuration............................................................................................................................ 60
Start-up operation ................................................................................................................................. 60
Setting Inverters for Available Solar Module Ground............................................................................ 60
Operation 65
Keys and symbols...................................................................................................................................... 67
Controls and Indicators ......................................................................................................................... 67
Display .................................................................................................................................................. 68
Operating Status LED ........................................................................................................................... 69
Startup Phase and Grid Feed-in Mode ...................................................................................................... 71
Startup phase........................................................................................................................................ 71
Test Procedure ..................................................................................................................................... 71
Operation of Feeding Energy into the Grid ........................................................................................... 72
Navigation in the Menu Level..................................................................................................................... 73
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Activating display illumination ............................................................................................................... 73
Automatic switch to the "Now" display mode or the startup phase ....................................................... 73
Accessing the Menu Level .................................................................................................................... 73
The Display Modes .................................................................................................................................... 74
The Display Modes ............................................................................................................................... 74
Selecting a Display Mode ..................................................................................................................... 74
Overview of display values ................................................................................................................... 75
Display Values in "Now" Display Mode...................................................................................................... 76
Selecting the "Now" Display Mode........................................................................................................ 76
Display values in the "Now" display mode ............................................................................................ 76
Options.................................................................................................................................................. 78
Display Values in "Day / Year / Total" Display Modes ............................................................................... 79
General ................................................................................................................................................. 79
Selecting "Day / Year / Total" Display Mode......................................................................................... 79
Display values in the 'Day / Year / Total' display modes....................................................................... 80
Options.................................................................................................................................................. 81
The Setup Menu ........................................................................................................................................ 82
Presetting.............................................................................................................................................. 82
Accessing the Setup Menu ................................................................................................................... 82
Scrolling through Menu Items ............................................................................................................... 83
Menu Items in the Setup Menu .................................................................................................................. 84
STANDBY ............................................................................................................................................. 84
CONTRAST .......................................................................................................................................... 84
LIGHT MODE........................................................................................................................................ 85
CASH .................................................................................................................................................... 85
CO2....................................................................................................................................................... 85
YIELD.................................................................................................................................................... 86
IG no. .................................................................................................................................................... 86
DAT COM ............................................................................................................................................. 87
TIME ..................................................................................................................................................... 87
LIMIT CFG ............................................................................................................................................ 88
STATE FAN .......................................................................................................................................... 91
STATE PS............................................................................................................................................. 91
VERSION.............................................................................................................................................. 92
Setting and Displaying Menu Items ........................................................................................................... 93
Setting Menu Items - General ............................................................................................................... 93
Examples of Setting and Displaying Menu Items.................................................................................. 93
Setting the Currency and Charge Rate................................................................................................. 93
Displaying and setting parameters in the "DATCOM" menu item......................................................... 95
Setting Time and Date ......................................................................................................................... 97
Setup Lock function ................................................................................................................................... 100
General ................................................................................................................................................. 100
Activating/deactivating the "Setup Lock" function ................................................................................. 100
Select Log Entry function ........................................................................................................................... 102
General ................................................................................................................................................. 102
'Select Log Entry' function - access saved grid errors .......................................................................... 102
Energy Management function .................................................................................................................... 104
General ................................................................................................................................................. 104
Activating the "Energy Management" function...................................................................................... 104
Deactivating the "Energy Management" function.................................................................................. 106
EN-US
Troubleshooting and Maintenance 109
Status Diagnosis and Troubleshooting ...................................................................................................... 111
Displaying Status Codes....................................................................................................................... 111
Normal Operation Status Codes ........................................................................................................... 111
Total Failure .......................................................................................................................................... 111
Power stage set error status codes ...................................................................................................... 112
Class 1 Status Codes ........................................................................................................................... 113
Class 2 status codes............................................................................................................................. 115
Class 3 status codes............................................................................................................................. 115
Class 4 status codes............................................................................................................................. 117
Class 5 status codes............................................................................................................................. 123
Customer Service ................................................................................................................................. 127
5
Maintenance .............................................................................................................................................. 128
Safety.................................................................................................................................................... 128
General ................................................................................................................................................. 128
Opening the Fronius CL for service/maintenance................................................................................. 128
Operation in dusty environments .......................................................................................................... 129
Replace fuses ............................................................................................................................................ 130
Safety.................................................................................................................................................... 130
Opening the Fronius CL........................................................................................................................ 130
Replacing solar module ground fuses at the positive pole.................................................................... 131
Replacing solar module ground fuses at the negative pole .................................................................. 132
Replacing fuses for option cards and the switched-mode power supply .............................................. 132
Closing the Fronius CL ......................................................................................................................... 133
Replacing power stage sets....................................................................................................................... 134
Safety.................................................................................................................................................... 134
Opening the Fronius CL........................................................................................................................ 134
Removing power stage sets.................................................................................................................. 135
Sticker for replacing power stage sets .................................................................................................. 136
Inserting replacement power stage sets ............................................................................................... 137
Closing the Fronius CL ......................................................................................................................... 138
Appendix 139
Technical Data ........................................................................................................................................... 141
Fronius CL 36.0 .................................................................................................................................... 141
Fronius CL 48.0 .................................................................................................................................... 142
Fronius CL 60.0 .................................................................................................................................... 143
Explanation of footnotes ....................................................................................................................... 144
Relevant Standards and Directives............................................................................................................ 145
CE Conformity Marking......................................................................................................................... 145
Parallel Operation of In-Plant Power Generation Systems ................................................................... 145
Circuit to Prevent Islanding ................................................................................................................... 145
Grid Failure ........................................................................................................................................... 145
Terms and conditions of warranty and disposal......................................................................................... 146
Fronius Manufacturer's Warranty.......................................................................................................... 146
Disposal ................................................................................................................................................ 146
6
Safety rules
EN-US
Explanation of
Safety Instructions
General
DANGER! Indicates an immediate danger. Death or serious injury may result if
appropriate precautions are not taken.
WARNING! Indicates a possibly dangerous situation. Death or serious injury may
result if appropriate precautions are not taken.
CAUTION! Indicates a situation where damage or injury could occur. Minor injury
or damage to property may result if appropriate precautions are not taken.
NOTE! Indicates the possibility of flawed results and damage to the equipment.
IMPORTANT! Indicates tips for correct operation and other particularly useful information.
It does not indicate a potentially damaging or dangerous situation.
If you see any of the symbols depicted in the "Safety Rules," special care is required.
The device is manufactured using state-of-the-art technology and according
to recognized safety standards. If used incorrectly or misused, however, it can
cause
- injury or death to the operator or a third party,
- damage to the device and other material assets belonging to the operator,
- inefficient operation of the device
All persons involved in commissioning, maintaining and servicing the device
must
- be suitably qualified,
- have knowledge of and experience in dealing with electrical installations
and
- read and follow these operating instructions carefully
The operating instructions must always be at hand wherever the device is being used. In addition to the operating instructions, attention must also be paid
to any generally applicable and local regulations regarding accident prevention and environmental protection.
All safety and danger notices on the device
- must be kept in a legible state
- must not be damaged/marked
- must not be removed
- must not be covered, pasted or painted over
For the location of the safety and danger notices on the device, refer to the
section headed "General" in the operating instructions for the device.
Before switching on the device, remove any faults that could compromise
safety.
Your personal safety is at stake!
7
Utilization in Accordance with
"Intended Purpose"
The device is to be used exclusively for its intended purpose.
Utilization for any other purpose, or in any other manner, shall be deemed to
be "not in accordance with the intended purpose." The manufacturer shall not
be liable for any damage resulting from such improper use.
Utilization in accordance with the "intended purpose" also includes
- carefully reading and obeying all the instructions and all the safety and
danger notices in the operating instructions
- performing all stipulated inspection and servicing work
- installation as specified in the operating instructions
The following guidelines should also be applied where relevant:
- Regulations of the utility regarding energy fed into the grid
- Instructions from the solar module manufacturer
Environmental
Conditions
Qualified Service
Engineers
Operation or storage of the device outside the stipulated area will be deemed
as "not in accordance with the intended purpose." The manufacturer is not responsible for any damages resulting from unintended use.
For exact information on permitted environmental conditions, please refer to
the "Technical data" in the operating instructions.
The servicing information contained in these operating instructions is intended
only for the use of qualified service engineers. An electric shock can be fatal.
Do not perform any actions other than those described in the documentation.
This also applies to those who may be qualified.
All cables and leads must be secured, undamaged, insulated and adequately
dimensioned. Loose connections, scorched, damaged or inadequately dimensioned cables and leads must be immediately repaired by authorized personnel.
Maintenance and repair work must only be carried out by authorized personnel.
It is impossible to guarantee that externally procured parts are designed and
manufactured to meet the demands made on them, or that they satisfy safety
requirements. Use only original replacement parts (also applies to standard
parts).
Do not carry out any modifications, alterations, etc. without the manufacturer's
consent.
Components that are not in perfect condition must be changed immediately.
Safety Measures
at the Installation
Location
8
When installing devices with openings for cooling air, ensure that the cooling air can enter
and exit unhindered through the vents. Only operate the device in accordance with the degree of protection shown on the rating plate.
Data Regarding
Noise Emission
Values
The inverter generates a maximum sound power level of < 80 dB(A) (ref. 1
pW) when operating under full load in accordance with IEC 62109-1:2010.
The device is cooled as quietly as possible with the aid of an electronic temperature control system, and depends on the amount of converted power, the
ambient temperature, the level of soiling of the device, etc.
It is not possible to provide a workplace-related emission value for this device,
because the actual sound pressure level is heavily influenced by the installation situation, the power quality, the surrounding walls and the properties of
the room in general.
EN-US
EMC Device Classifications
EMC Measures
Grid Connection
Devices in emission class A:
- Are only designed for use in industrial settings
- Can cause line-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.
In certain cases, even though a device complies with the standard limit values
for emissions, it may affect the application area for which it was designed (e.g.,
when there is sensitive equipment at the same location, or if the site where the
device is installed is close to either radio or television receivers). If this is the
case, then the operator is obliged to take appropriate action to rectify the situation.
High-performance devices (> 16 A) can affect the voltage quality of the grid
because of a high output current in the main supply.
This may affect a number of types of device in terms of:
- connection restrictions
- criteria with regard to maximum permissible mains impedance *)
- criteria with regard to minimum short-circuit power requirement *)
Electrical Installations
*) at the interface with the public grid
see Technical Data
In this case, the operator or the person using the device should check whether
or not the device is allowed to be connected, where appropriate through discussion with the power supply company.
Electrical installations must only be carried out according to relevant national
and local standards and regulations.
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Protective Measures against
ESD
Danger of damage to electrical components from electrical discharge. Suitable
measures should be taken to protect against ESD when replacing and installing components.
Safety measures
in normal operation
Safety Symbols
Disposal
Only operate the device when all safety devices are fully functional. If the safety devices are not fully functional, there is a risk of
- injury or death to the operator or a third party
- damage to the device and other material assets belonging to the operating company
- inefficient operation of the device
Safety equipment that is not fully functional must be repaired by an authorized
specialist before the device is turned on.
Never bypass or disable safety devices.
Devices with the CE marking satisfy the essential requirements of the low-voltage and electromagnetic compatibility directives. Further details can be found
in the appendix or the chapter entitled "Technical data" in your documentation.
Do not dispose of this device with normal domestic waste! To comply with the
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 locate the approved collection and recycling
facilities in your area. Ignoring this European Directive may have potentially
adverse affects on the environment and your health!
Backup
Copyright
10
The user is responsible for backing up any changes made to the factory settings. The manufacturer accepts no liability for any deleted personal settings.
Copyright of these operating instructions remains with the manufacturer.
Text and illustrations are technically correct at the time of going to print. The
right to make modifications is reserved. The contents of the operating instructions shall not provide the basis for any claims whatsoever on the part of the
purchaser. If you have any suggestions for improvement, or can point out any
mistakes that you have found in the operating instructions, we will be most
grateful for your comments.
General Information
Protection of Persons and Equipment
EN-US
Safety
Protection of Persons and Equipment
Galvanic isolation The inverter is equipped with a high frequency transformer that ensures galvanic isolation
Monitoring the
grid
The design and function of the inverter offer a maximum level of safety, both during installation as well as operation.
The inverter provides operator and equipment protection through:
a) galvanic isolation
b) monitoring the grid
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 in accordance with national standards and guidelines.
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.
Grid monitoring is carried out using:
- voltage monitoring
- frequency monitoring
- over-/under-voltage relay (option, depending on the country setup)
- monitoring of islanding conditions
13
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 or painted over. The notices and symbols warn against operating the equipment incorrectly, as this may result in serious injury
and damage.
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Safety symbols:
Risk of serious injury and damage due to incorrect operation
Do not use the functions described until you have thoroughly read and understood the following documents:
- these operating instructions
- all operating instructions for system components of the photovoltaic system, especially the safety rules
Dangerous electrical voltages
Text of warning notices:
WARNING!
An electrical shock can be fatal.
Make sure that the input and output sides in front of the device are not charged before removing covers or power stage sets.
You must wait until the capacitors have discharged. Discharge takes 5 minutes.
Dangerous voltage from solar modules that are exposed to light.
The connection area should only be opened by a licensed electrician.
Power stage set rack no. 0 must be installed prior to start-up.
EN-US
15
Utilization in accordance with "intended purpose"
Utilization 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 pubic grid.
The following are deemed not in accordance with the intended purpose:
- Utilization 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.
Utilization 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.
16
Functional principle
EN-US
Functional principle
The MIX
cept
TM
con-
The inverter is fully automatic. Starting at sunrise, as soon as the solar modules generate
enough power, the automatic control unit starts monitoring voltage and frequency. As soon
as there is a sufficient level of irradiance, your solar inverter starts feeding energy to the
grid.
The control system of the 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 recorded data are saved.
MIX = Master Inverter X-change
In the MIX concept, several smaller power stage sets operate instead of one large power
stage set. Depending on the irradiance, the inverter turns the power stage sets on or off
according to country-specific standards, e.g.:
- When irradiance is low, initially only 1 power stage sets turn on in the inverter.
- As irradiance increases, a 2nd and then a 3rd power stage set turns on.
- When irradiance is high, the other power stage sets switch on in sets of 3.
- 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.
- A "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 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.
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Forced ventilation
The 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 helps to prevent
power stage sets from getting dirty.
The fan speed and the temperature of the
supply air are monitored.
The self-contained power stage sets 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 parts, thus improving service life
- lowest possible energy consumption and noise level
Power derating Should there be insufficient heat dissipation in spite of the fan operating at maximum speed
(for example, inadequate heat transfer away from the heat sinks), the power will be derated
to protect the inverter when the ambient temperature reaches 40 °C and above.
Derating the power reduces the output of the inverter for a short period sufficient to ensure
that the temperature will not exceed the permissible limit.
Your inverter will remain ready for operation as long as possible without any interruption.
Solar module
ground
The inverter connection area has a PC board with 2 fuse holders for inserting fuses when
a solar module ground is required.
18
The Fronius CL unit in the PV system
General The solar inverter is the highly complex link between the solar modules and the public grid.
Tasks The main tasks of the inverter include:
- Converting DC to AC current
- Fully automatic operational management
- Display function and data communication
EN-US
Converting DC to
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 design of the display is geared towards simple operation and making system data available
as long as the inverter operates.
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.
19
System upgrades
System upgrades
Fronius Com
Card
Fronius Datalogger Card
Fronius Public
Display
The inverter is designed for various system upgrades, e.g.:
- Fronius Com Card
- Fronius Datalogger Card / Box
- Fronius Public Display
System upgrades are available as plug-in cards or versions with an external housing. The
inverter can accommodate 2 option cards in addition to the standard Fronius Com Card.
The Fronius Com Card enables the inverter to communicate with external system upgrades as well as with other inverters.
The Fronius Com Card comes standard with the inverter.
Datalogger (when using a PC to record and manage data from your photovoltaic system),
includes Datalogger and a modem interface
Fronius Solar.access software is required for data analysis.
Various large-format displays
- Fronius Public Display Card / Box
- Fronius Interface Card / Box
- Fronius String Control 250/25
Fronius Interface
Card
Fronius String
Control 250/25
100 kohm
Grounding Kit
Option
The Fronius Interface Card is an RS 232 interface for transmitting various kinds of system
data in a freely accessible format.
The Fronius String Control 250/25 is used to combine and monitor solar module strings.
Along with the solar module ground on the positive or negative
pole, solar modules can also be grounded with high resistance on
the positive or negative pole.
This requires the 100 kohm Grounding Kit option, which is inserted into the corresponding fuse holder similar to a regular fuse for
the solar module ground.
Grounding Kit 100 kOhm
20
Data Communication and Solar Net
EN-US
Solar Net and
Data Interface
Fronius developed Solar Net to make these add-on system components flexible and capable of being used in a wide variety of different applications. Solar Net is a data network
which enables several inverters to be linked with the system upgrades.
Solar Net is a bus system. A single cable is all that is required for one or more inverters
to communicate with all system upgrade components.
The core of the Solar Net is the Fronius Datalogger. It coordinates the data traffic and
makes sure that even large volumes of data are distributed quickly and reliably.
The 'Fronius COM Card' option is required to integrate an inverter into Solar Net.
Important Every inverter that is to be monitored using a Datalogger requires a 'Fronius
COM Card.' In this case, the ‘Fronius Com Card’ serves as a link between the internal
network of the 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 up to 1000 m (3280 ft) away from the
last inverter with a 'Fronius COM card.'
Different system upgrades are detected automatically by Solar Net.
In order to distinguish between several identical system upgrades, each one must be assigned a unique number.
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 this manual.
More detailed information on the individual system upgrades can be found in the relevant
operating instructions or on the Internet at http:\\www.fronius.com.
Example Logging and archiving inverter and sensor data using a Fronius Datalogger and Fronius
Sensor Box:
Fronius
CL
Com Card
IN OUT
Fronius
CL
PC
Com Card
Datalogger C.
IN OUT
RS 232
Sensor Box
IN OUT
°C
W/m²
m/s
Fronius
CL
321
IN
Com Card
OUT
= Terminating plug
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Illustration explanation: Data network with 3 Fronius CL units and one Fronius 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 RS232 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 the 'Fronius Com Cards.' Each 'Fronius Com Card' is
equipped with two RS485 interfaces - an input and an output. RJ45 plug connectors are
used to connect to these cards.
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Inverter product description
Closed inverter
product description
(12)
EN-US
(3)(2)(1) (1) (1)
(4)
(5)
(6)
(11)
(10)
Item Designation
(1) Ring bolt for transporting by crane (4 x)
(2) Door latch top left
(3) Door latch top right (can be locked)
(4) Air discharge opening diameter 315 mm
(5) DC main switch, can be locked when turned off
(7)
(8)
(9)
IMPORTANT The doors cannot be opened when the DC main switch is turned
on.
(6) Control units (display, keys, Operating Status LED)
(7) Right fan
(8) Door latch bottom right (can be locked)
(9) Optional mounting base with removable side parts,
height 100 mm
(not included in the scope of supply of the inverter)
(10) Door latch bottom left
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Item Designation
(11) Left fan
(12) AC main switch
The 'AC main switch' is equipped as an AC disconnect for BDEW devices with the
'DE-MS' setup.
Open inverter
product description
(4)
(3)
The AC main switch (AC disconnect) can be locked when turned off.
IMPORTANT The doors cannot be opened when the AC main switch is turned on.
Item Designation
(1) Power stage set racks
(max. 15)
(2) Cover right
(3) Cover left
(4) Cover top
(1)
The connection area is located under the
left and right covers.
(2)
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Cover top:
Item Designation
(5)
(6)
(5) AC main switch back (depending
on country setup)
(6) Shaft for DC main switch
(7) Only for BDEW devices with the
'DE-MS' setup:
Shaft for AC main switch (AC disconnect)
(7) (6)
BDEW device
The grid voltage contactor is located under the top cover on the left (except for BDEW devices with the 'DE-MS' setup).
EN-US
25
Connection area product description
Connection area
product description
(4) (5)
Item Designation
(1) Rail with strain relief device clamps for AC and DC wires
(included in the scope of supply for the inverter)
(2) Cable input opening with slide cover
(3) AC connections M10 (L1, L2, L3, N) and ground clamp (PE, solar module frame
ground, etc.)
(4) DC connections M10
(5) Fuse holders for grounding solar modules:
DC+ to PE or DC- to PE
(6) 2 potential-free relays, e.g., for connecting and controlling external ventilation
- with terminals
- with a strain-relief device
(7) Option area
- with standard Fronius Com Card for data communication via Solar Net
- with 2 free slots for option cards
- with a strain-relief device
(6)(3)
(8)
(7)(2)
(9)
(10)(1)
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The number of free slots and available option cards can vary depending on the
country setup.
(8) 230 V AC sockets,
e.g., for supplying power to DATCOM components, a modem, notebook, etc.
(9) 4-pin power circuit breaker (depending on the country setup)
For interrupting the power supply to the following:
- "Snowball" PC board (fan control)
- Both sockets
- Measurement and monitoring relay
(10) Measurement and monitoring relay (depending on the country setup)
Three-phase monitoring of phase sequence, phase failure, overvoltage, undervoltage and asymmetry, neutral conductor monitoring
Terminals in the
area of the potential-free relays
EN-US
(1)
(2)
L N
(3)
Item Description
(1) Jumper slot 'AC COM'
(2) Jumper slot 'external'
(3)
L + N = connection for external AC supply (e.g., for fans, DATCOM, sockets, etc.)
(4)
230 V, connection of phase and neutral conductor
alternating current fuse: 230 V AC / 10 A
IMPORTANT When connecting an external AC power supply, set the jumper at
the 'external' and 'AC COM' jumper slots.
(5)
(6)
S2 + EXT = connection for an external switch for external control of the grid voltage contactor (e.g., to enable the inverter to operate off the grid if required)
(4)
extern
AC COM
S2 EXT NO SC2 NC NC SC1 NO
(5)
(6)
(7)
(8)
(10) (11) (12)
(9)
Switch: normally open contact with min. 230 V / 1 A
IMPORTANT The external switch can only be connected to devices with a grid
voltage contactor.
When connecting an external switch, remove the shorting bar connected in series.
(7) NO = normally open contact for relay contact 2
(8) SC2 = relay contact 2
(9) NC = break contact for relay contact 2
(10) NC = break contact for relay contact 1
(11) SC1 = relay contact 1
(12) NO = normally open contact for relay contact 1
Cable cross-section: 1–16 mm²
Terminal tightening torque: 1.2–1.5 Nm
max. Current per relay output: AC max. 277 V / 10 A, DC max. 24 V / 10 A
The relay contacts can have different functions assigned in the "Basic Service" menu. To
access the "Basic Service" menu, you need to enter the code 22742:
- Press the "Menu" key
- Select the 'Setup' mode
- Press the unassigned "Esc" key five times
- Enter access code 22742
- Select the 'GPSC CFG' parameter
- Set the desired functions for the relay contacts
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Possible functions of relay contacts
Function
number
Activation criterion1) for the switch
contact
Deactivation criterion2) for the
switch contact
1 AC contactor is open AC contactor is
closed
2 Power feed-in possi-
ble on DC side
3 Cabinet fan in opera-
tion
4 Max. interior tem-
perature >/= 40
5 Max. interior tem-
perature >/= 50
Power feed-in not
possible on DC side
Cabinet fan not in
operation
Max. interior temperature </= 30
Max. interior temperature </= 40
6 Triggering of contin-
ual3) and temporary4) service codes
7 Triggering of contin-
Error confirmation
per key press / per
Solar Net command
ual3) service codes
8 Inverter in feed-in
mode
9 The switch-on point
for the effective power limit has been
reached.
Inverter not in feedin mode
The switch-off point
for the effective power limit has been
reached.
Description
Error signal of contactor or no AC grid
Shut-down of external components over
night
(e.g., 50 Hz transformer)
External ventilation /
air conditioning can
be activated
Status display / Relay contact trips
Control of motorized
stop valve
Energy Management
function
5)
1)
Activation = the break contact for the relay contact opens, the normally open contact closes
2)
Deactivation = the break contact for the relay contact closes, the normally open
contact opens
3)
Continual service codes (e.g., inverter malfunction or shutdown, when the service
code is displayed longer than 4 h 15 min.)
4)
Temporary service codes (e.g., brief interruption of feed-in operation, a service
code is triggered more than 50 x per day)
5)
The Energy Management function is automatically activated as soon as one of the
two relay contacts is assigned function number 9,
- either with the values from the factory settings, if the Energy Management
function has never been used,
or
- with the values last set by the user.
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