Fronius CL 36.0 Operating Instructions Manual
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Fronius CL 36.0 Operating Instructions Manual

Fronius CL 36.0 Operating Instructions Manual

Inverter for grid-connected photovoltaic systems
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/ Battery Charging Systems / Welding Technology / Solar Electronics
Fronius CL 36.0 / 48.0 / 60.0
Fronius CL 33.3 / 44.4 / 55.5
42,0426,0083,EA 008-11022014
WYE 277
DELTA
Operating Instructions
Inverter for grid-connected
photovoltaic systems

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Summary of Contents for Fronius CL 36.0

  • Page 1 / Battery Charging Systems / Welding Technology / Solar Electronics Operating Instructions Fronius CL 36.0 / 48.0 / 60.0 WYE 277 Inverter for grid-connected Fronius CL 33.3 / 44.4 / 55.5 DELTA photovoltaic systems 42,0426,0083,EA 008-11022014...
  • Page 3 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.
  • Page 4 ud_fr_st_et_01382 012008...
  • Page 5 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.

  • Page 7: Safety Instructions

    Safety Instructions Explanation of „DANGER!“ Indicates an immediate danger. Death or serious injury may Safety Warnings! result if appropriate precautions are not taken. „WARNING!“ indicates a potentially dangerous situation. Death or serious injury may result if appropriate precautions are not taken. „CAUTION!“...
  • Page 8 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...
  • Page 9 Information on The inverter generates a maximum sound power level of <80dB(A) (ref. Noise Emission 1pW) at full-load operation according to IEC 62109-1. Values 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.

  • Page 10: Electrical Installations

    Electrical Installa- Electrical installations may only be carried out in accordance with relevant tions national and local standards and regulations. ESD Precautions Danger of damage to electronic components due to electrostatic discharge. Take appropriate ESD precautions when replacing and installing compon- ents.

  • Page 11: Table Of Contents

    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 ......................
  • Page 12 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 ..................
  • Page 13 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 ......................
  • Page 14 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 ..............

  • Page 15: Protection Of Persons And Equipment

    Information The inverter is equipped with field adjustable trip points. For further information, please about Field contact Fronius technical support at: pv-us-support@fronius.com. Adjustable Trip Points FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to...

  • Page 16: Ground Fault Detector / Interrupter

    Ground Fault The inverter is equipped with a ground fault detection and interruption (GFDI) circuit as Detector / Inter- required by UL 1741 and the National Electrical Code. rupter Depending on the system configuration, either the positive or negative conductor of the PV array is grounded in the inverter via a fuse.

  • Page 17: Warning Notices Affixed To The Device

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

  • Page 18: Use In Accordance With "Intended Purpose

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

  • Page 19: Operating Principle

    Operating Principle Fully Automatic The inverter is fully automatic. Starting at sunrise, as soon as the solar modules genera- Operational te enough power, the automatic control unit starts monitoring grid voltage and frequen- Management cy. After five minutes, if there is a sufficient level of irradiance, your solar inverter starts feeding energy to the grid.

  • Page 20: Forced Ventilation

    Forced Ventilati- 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.

  • Page 21: The Fronius Cl Unit In The Pv System

    The Fronius CL Unit in the PV System General The Fronius CL solar inverter is the highly complex link between the solar modules and the public grid. Inverter Main AC Energy Load Center Meter PV Array The main tasks of the inverter include:...

  • Page 22: Data Communications Components

    Fronius Datalog- 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., Fronius Sensor for temperature, irradiance).

  • Page 23: Inverter Product Description

    Inverter Product Description Inverter Product Description (doors closed) (13) (12) (11) (10) Item Description Ring bolt for transporting by crane (4 x) Door latch top left Door latch top right (can be locked) Exhaust air hood DC main switch, can be locked when turned off Important! The doors cannot be opened when the DC main switch is turned Control units (display, keys, Operating Status LED) Fan cover right...

  • Page 24: Inverter Product Description (Doors Opened)

    Closed Inverter Item Description Product Descrip- tion (12) Fan cover left (continued) (13) AC main switch, can be locked when turned off Important! The doors cannot be opened when the AC main switch is turned Inverter Product Description (doors opened) The connection area for AC and DC is Item Description...

  • Page 25: Connection Area Product Description

    (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...

  • Page 26: Terminals In The Area Of The Isolated Relay Contact

    Terminals in the Area of the Isolated Relay Contact (1) (2) (3) (4) (5) Item Description NO = normally open contact for relay contact 2 SC2 = relay contact 2 NC = break contact for relay contact 2 NC = break contact for relay contact 1 SC1 = relay contact 1 NO = normally open contact for relay contact 1 NO = normaly open...

  • Page 27: Choosing The Location

    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).

  • Page 28: Transport

    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 / 36.0 277 ..........661.00 lbs. (300 kg) DELTA Fronius CL 44.4 / 48.0 277 ..........721.00 lbs. (327 kg) DELTA Fronius CL 55.5...

  • Page 29: Crane Transport Using Forks

    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.

  • Page 30: Removing Power Stage Sets

    Removing Power Stage Sets Opening the Fronius CL Removing Power WARNING! An electrical shock can be fatal. Danger from grid voltage and Stage Sets 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.

  • Page 31: Requirements For Installing The Fronius Cl

    Requirements for Installing the Fronius CL Additional Exter- Depending on the installation, an additional external AC and/or DC disconnect may be nal AC and/or DC required if the inverter is installed in a location not easily accessible to utility or fire Disconnect personnel.

  • Page 32: Bottom 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.

  • Page 33: Fronius Cl Installation

    Fronius CL Installation Safety WARNING! Toppling or falling devices can be deadly. Install the inverter on a level and stable surface. Preparing AC and Cut the AC and DC cables as well as DC Wires grounding cables so that 24.4 - 32.3 in.

  • Page 34: Positioning The Mounting Base

    Positioning the NOTE When positioning the mounting base, make sure that the AC and DC Mounting Base 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.

  • Page 35: Installing The Mounting Base

    Installation of several inverters (continued) turn up for easier handling 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...

  • Page 36: Preparing The Fronius Cl

    100% level position. Preparing the CAUTION! An inadequate grounding conductor connection can cause Fronius CL 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.

  • Page 37: Positioning The Fronius Cl On The Mounting Base

    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 Positioning the Fronius CL on the Mounting Base Using a Crane Lower the inverter onto the mounting Position the inverter over the moun-...

  • Page 38: Positioning The Fronius Cl On The Mounting Base Using A Crane And Forks, A Forklift Or A Lift Truck

    Positioning the Fronius CL on the Mounting Base Using a Crane and Forks, a Forklift or a Lift Truck Position the inverter over the moun- Lower the inverter onto the mounting ting base, e.g., using a forklift base Insert AC and DC wires, grounding...

  • Page 39: Securing The Fronius Cl To The Mounting Base

    Securing the Fronius CL to the Mounting Base 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...

  • Page 40: Cross Section Of Ac And Dc Wires

    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.

  • Page 41: Minimum Cross Section Of Dc Wires

    Minimum Cross Size the DC wire according to the max. DC current of the connected PV array: Section of DC Wires 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.

  • Page 42: Connecting The Fronius Cl To The Public Grid (Ac)

    Connecting the Fronius CL to the Public Grid (AC) Overview of Fronius CL inverters can be connected to the following power grids: Available Power Grids Grid Inverter 208 V Delta Fronius CL 33.3 DELTA Fronius CL 44.4 DELTA Fronius CL 55.5...

  • Page 43: Monitoring The Grid

    480 V Delta: 277 V WYE Fronius CL 36.0 (continued) Fronius CL 48.0 Fronius CL 60.0 480 V 120 ° NOTE Do not connect Fronius 480 V Delta CL inverters to the 480 V Delta power grid. 480 V 120 ° Monitoring the...

  • Page 44: Possible Connections To The Ground Terminal

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

  • Page 45: Connecting Aluminium Wires

    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 NOTE The phases should be connected in the proper order: GND, L1, L2, L3 Fronius CL to the and N. Public Grid (AC) NL10 Tightening torque: 22.17 ft.

  • Page 46: Ac Connection Examples

    NOTE To reduce the risk of fire, connect only to a circuit provided with branch on for the AC- circuit overcurrent protection in accordance with the National Electrical Code, side Overcurrent ANSI / NFPA 70, at a MAXIMUM of: Protection Fronius CL Overcurrent Protection 208 V 240 V 277 V 33.3...

  • Page 47: Connecting Dc Wires To The Fronius Cl

    (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.

  • Page 48: Dc Terminals

    Safety Two-part securing washers in two sizes (continued) are included with the installation and connection accessories. radial teeth: These two-part securing washers with outside cam faces on one side and radial teeth on the opposite side are pairwise pre-assem- bled, cam face to cam face. cam faces: inside pairwise...

  • Page 49: Connecting Dc Wires

    Connecting DC NOTE Connecting the DC wiring Wires with the wrong polarity may cause damage to the inverter. Check both the polarity and the open circuit voltage. The DC Voltage must not exceed 600 V, regardless of temperature. NOTE Form a min. 4 in. wire loop using all wires.
  • Page 50 DC Connection Examples (continued) DC connection with double hole cable lug and three DC connection with single hole cable lug and three cables 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 ( in.) (3) two-part securing washer NL 12, outside diameter 19.5 mm (...

  • Page 51: Fronius Cl Solar Module Ground

    Solar Module Ground at Negative Pole Not Used) (1) Solar module (2) Inverter Fuse Depending on the inverter output, Fronius recommends fuses with the following nominal current values for the solar module ground: Fronius CL 33.3 Fronius CL 36.0 DELTA Fronius CL 44.4...

  • Page 52: Safety

    Never touch the DC+ and DC-. Solar Module The Fronius CL is designed for a solar module ground at the negative pole. The inverter Ground at Nega- comes supplied with a corresponding fuse in the right fuse holder for a solar module tive Pole ground at the negative pole.

  • Page 53: Inserting Power Stage Sets

    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.

  • Page 54: Slot Arrangement

    Slot Arrangement PS 12 PS 13 PS 14 PS 09 PS 10 PS 11 PS 06 PS 07 PS 08 PS 03 PS 04 PS 05 PS 00 PS 01 PS 02 Dip Switches for A dip switch on the front of the power stage set is used to identify each individual power Identifying Power stage set in the inverter.

  • Page 55: Inserting Power Stage Sets

    Inserting Power WARNING! An electrical shock can be fatal. Danger from grid voltage and Stage Sets 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.

  • Page 56: Application Example

    Application Inserting power stage set PS 10: Example 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 12 PS 13...

  • Page 57: Closing The Fronius Cl

    Closing the Fronius CL Closing the CAUTION! An inadequate grounding conductor connection can cause Fronius CL 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.

  • Page 58: Start-Up Operation

    Start-up Operation Factory Pre-set Your Fronius CL has been pre-configured in the factory and is ready for operation. You Configuration 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.’...

  • Page 59: Selecting The Public Grid

    Start-up Operati- The grid selection phase begins. ‘SETUP ’ is displayed. (continued) Press the ‘Enter’ key The first grid selection option is shown (e.g., 208 V) Select the public grid Selecting the Use the ‘Up’ and ‘Down’ keys to select the desired grid: Public Grid 208 V 120 °...

  • Page 60: Startup Phase During Startup Operation

    Startup All display elements light up for about Operation one second The Fronius CL goes through a master check list for several seconds The display shows ‘TEST’ and indica- tes the respective component that is being tested (for example, ‘LED’)
  • Page 61 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 ‘Operati- on’, section ‘Product Description Fronius CL’ (Startup Phase, Test Procedure).

  • Page 62: Setting Inverter For Solar Module Ground At The Positive Pole

    Setting inverter If the inverter will be operated with solar modules that require a solar module ground at for solar module the positive pole, the corresponding grounding method must be set in the ‘Basic Ser- ground at the vice’ menu. positive pole For accessing the ‘Basic Service’...
  • Page 63 Setting inverter Use the ‘Up’ or ‘Down’ keys to select for solar module the 'GNDMODE' parameter ground at the positive pole Press the ‘Enter’ key (continued) The set grounding mode is displayed. Use the ‘Up’ and ‘Down’ keys to select the corresponding ‘POS GND’ grounding method: POS = solar module ground at positi- ve pole...

  • Page 64: Selecting The Interface Protocol And Setting The Inverter Baud Rate

    Selecting the Interface Protocol and Setting the In- verter Baud Rate General 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. Press the ‘Menu’ key...

  • Page 65: Selecting The Interface Protocol For Communication With Other Data Communication Components

    Entering the The inverter is now in the ‘Basic access code Service’ menu, the first parameter (continued) ‘MIX MODE’ is displayed. Selecting the The inverter is in the ‘Basic Service’ interface proto- menu, the first parameter ‘MIX col for communi- MODE’...

  • Page 66: Setting The Inverter Baud Rate

    Selecting the The ‘IFP’ protocol type is applied, interface proto- ‘MODE’ is displayed. col for communi- cation with other For setting the inverter baud rate data communica- without exiting the ‘Basic Service’ tion components menu follow the steps in the enclosed (continued) section ‘Setting the Inverter baud rate’, starting from step 3.
  • Page 67 Setting the The set baud rate is displayed. inverter baud rate Use the ‘Up’ and ‘Down’ keys to (continued) select the desired baud rate: 2400 / 4800 / 9600 / 14400 / 19200 Press the ‘Enter’ key The selected baud rate is applied, ‘BAUD’...

  • Page 68: Setting The Relay Contact Functions

    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 Func- Function Activation criterion...

  • Page 69: Entering The Access Code

    The ‘Relay contact functions’ must be set in the ‘Basic Service’ menu. Entering the access code Press the ‘Menu’ key ‘Menu’ is shown. Select the ‘Setup’ mode using the ‘Left’ or ‘Right’ keys Press the unoccupied ‘Menu/Esc’ key ‘CODE’ is displayed, the first digit flashes.

  • Page 70: Setting The Relay Contact Functions

    Setting the relay The inverter is in the ‘Basic Service’ contact functions menu, the first parameter ‘MIX MODE’ is displayed. Use the ‘Up’ and ‘Down’ keys to select the ‘GPSC CFG’ parameter Press the ‘Enter’ key ‘SC1’ is shown. Use the ‘Up’ and ‘Down’ keys to select the relay contact: SC1 = relay contact 1 SC2 = relay contact 2...

  • Page 71: Inserting Option Cards

    You must wait until the capacitors have discharged. Discharge takes 5 minutes. NOTE Follow general ESD precautions when handling option cards. Opening the When adding option cards to the Fronius CL, please follow all inverter safety instruc- Fronius CL tions and information. CAUTION! An inadequate grounding conductor connection can cause serious injuries to persons and damage to (or loss of) property.

  • Page 72: Connecting Option Cards, Laying Data Communication Wires

    Opening the Fronius CL (continued) Inserting Option Insert option cards into free slots and Cards secure. Connecting CAUTION! Danger of short circuit by loose metal parts from knockouts. Option Cards, Loose metal parts in the inverter may cause short circuits when the inverter Laying Data is powered up.
  • Page 73 Connecting Only when data communication cables run into the inverter from the side: Option Cards, Laying Data Important Use a suitable tool to break out the wire input openings corresponding to the Communication diameter of the data communication cables from the side of the mounting base. Follow Wires all safety instructions from the tool manufacturer.

  • Page 74: Closing The Fronius Cl

    Closing the CAUTION! An inadequate grounding conductor connection can cause Fronius CL 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.

  • Page 75: Solar Net And Data Communication

    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.

  • Page 76: Application Example

    - 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 commu- nication (Solar Net) takes place via ‘Fronius Com Cards.’...

  • Page 77: Keys And Symbols

    Keys and Symbols Keys and Sym- bols Keys and Symbols on the Inverter Item Function Display for displaying values, settings and menus Operating Status LED for displaying the operating status ‘Enter’ key for confirming a selection ‘Menu / Esc’ key for changing the menu level for exiting the Setup menu ‘Down/Right’...
  • Page 78 Display (continued) (13) (12) (11) (10) Display Item Function Icons for the ‘Now’ display mode Icons for the ‘Day’ display mode Icons for the ‘Year’ display mode Icons for the ‘Total’ display mode Icons for the ‘Setup’ display mode Icons for operating conditions Indicates the maximum value within the period of observation (depen- ding on the display mode chosen) Indicates the minimum value within the period of observation (depen-...

  • Page 79: Operating Status Led

    Operating Status 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.

  • Page 80: Startup Phase And Grid Feed-In Mode

    Startup Phase and Grid Feed-in Mode Startup Phase 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 Opera- ting Status LED is yellow.

  • Page 81: Operation Of Feeding Energy Into The Grid

    Operation of After the tests are completed, the inverter starts feeding energy into the grid. Feeding Energy The display shows the present power feeding into the grid. into the Grid The Operating Status LED lights up green, and the inverter starts operating.

  • Page 82: Activating Display Backlight

    Navigation in the Menu Level Activating Dis- Press any key play Backlight 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.

  • Page 83: Selecting A Display Mode

    ‘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...

  • Page 84: Overview Of Display Values

    Overview of Display Icon Unit Optional Display value Display Values mode ‘Now’ output power AC grid voltage output current Grid frequency DC array voltage Module current MOhm insulation resistance HH:MM Time ° F Supply air temperature Speed of left fan Speed of right fan ‘Day’...

  • Page 85: Display Values In The 'Now' Display Mode

    Display Values in the ‘Now’ Display Mode Selecting the Select the ‘Now’ display mode ‘Now’ Display Mode The first display value appears in the ‘Now’ display mode. Use the ‘Down’ (2) key to scroll to the next display value Scroll back using the ‘Up’ key (1) First Display Values in the ‘Now’...
  • Page 86 When there is communication with the ‘NL-MON’ plug-in card, ‘NLMON ’ is displayed. Time of day (optional Fronius Datalog- ger) When the time on the inverter or on a dataloggere is changed, this changes the time on all devices connected via Solar...

  • Page 87: Options

    Display Values in Supply air temperature the ‘Now’ Display Temperature of the supply air used to cool Mode the inverter (° F) (continued) 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’...

  • Page 88: Display Values In The 'Day / Year / Total' Display Modes

    (kWh) maximum output power (Watts) operating hours of the inverter maximum grid voltage (Volts) If an optional Fronius Datalogger is available, the display values listed always apply to the whole day. Selecting ‘Day / Year / Total’ Display Modes First Display Value in the ‘Day’...

  • Page 89: Display Values In The 'Day / Year / Total' Display Modes

    Display Values in Energy supplied the ‘Day / Year / Energy supplied during the monitored Total’ Display period (kWh / MWh) Modes 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.

  • Page 90: Options

    Display Values in Maximum array voltage the ‘Day / Year / Highest reading of array voltage (V) Total’ Display during observation period Modes (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’).

  • Page 91: The Setup Menu

    The Setup Menu Default Settings 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.

  • Page 92: Scrolling Through Menu Items

    Scrolling through Menu Items Example: ‘STAND ’ Menu Item Example: ‘CONTR ’ Menu Item Access the setup menu Scroll through the available menu items using the ‘Up’ (1) and ‘Down’ (2) keys STAND Manual activation / deactivation of Stand- Menu Items in by operation using the ‘Enter’...
  • Page 93 Menu Items in LIGHT MODE the Setup Menu default setting of display backlight (continued) Unit Setting range AUTO / ON / OFF Factory setting AUTO AUTO: The display backlight will stop 2 minutes after the last key has been pressed. The display will remain illuminated whenever power is supplied to the grid OFF:...
  • Page 94 IFCD 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"...
  • Page 95 (continued) Unit DDMMYYYY, HH:MM Setting range Date / Time Factory setting The ‘Time’ menu item is only supported when the Fronius Datalogger option is installed. STATE fan status indicator Unit Display area N.I. / SAFETY and STOP / SELF and TEST / O.K.
  • Page 96 Menu Items in VERSI the Setup Menu displays the version number and serial (continued) number of the electronic components (e.g., IG-Brain, power stage sets, display) Unit Display area MAIN / LCD / PS (PS00, PS01 ... PS14) / CTRL SNOW BALL Factory setting MAIN...

  • Page 97: Setting And Displaying Menu Items

    Setting and Displaying Menu Items General Menu Access the Setup menu Item Settings Use the ‘Up’ and ‘Down’ keys to select the desired menu item Press the ‘Enter’ key Use the ‘Up’ and ‘Down’ keys to change the value of the menu item To save the changed values: Press the ‘Enter’...

  • Page 98: Restoring The Grid Feed

    Setting Standby The display switches between ... Mode - Manual Shutoff of Fee- ‘STANDBY’ ding Energy into the Grid and ... (continued) ‘ENTER’ The Standby mode is now activated (manual shutoff of feeding energy into the grid). The Operating Status LED lights up orange.

  • Page 99: Setting The Display Illumination

    Setting the Use the ‘Up’ and ‘Down’ keys to Display Contrast select the desired level of contrast (continued) Setting ‘0’ for the minimum possible contrast Press the ‘Enter’ key to accept the setting The set contrast is applied. The ‘Contrast’ menu item is displayed. Setting the Select the ‘LIGHT ’...

  • Page 100: Setting The Currency And Rate

    Setting the Select the ‘CASH’ menu item Currency and Press the ‘Enter’ key Rate The currency is shown Factory setting = ‘USD’ The first of 3 characters flashes. Use the ‘Up’ and ‘Down’ keys to select a letter for the first character Press the ‘Enter’...

  • Page 101: Setting The Co2 Reduction Factor

    Setting the The set rate for energy supplied Currency and flashes. Rate (continued) 10. Press the ‘Enter’ key The charge rate is applied. The ‘Cash’ menu item is displayed. Setting the CO Select the ‘CO ’ menu item Reduction Factor Press the ‘Enter’...

  • Page 102: Setting The Offset Value For Total Energy Display And Measurement Correction Value

    Setting the CO The set CO2 reduction factor is Reduction Factor applied. The ‘CO ’ menu item is (continued) displayed. Setting the Offset Select the ‘YIELD’ menu item Value for Total Press the ‘Enter’ key Energy Display and Measure- ment Correction Value ‘OFFset’...
  • Page 103 Setting the Offset The Yield Offset value and the unit Value for Total flash. Energy Display and Measure- Press the ‘Enter’ key ment Correction Value (continued) The Yield Offset value and the SI prefix are applied. ‘OFFset’ is shown Press the ‘Up’ or ‘Down’ key ‘CALI.’...

  • Page 104: Setting The Inverter Number

    Setting the Offset The set correction value flashes. Value for Total Energy Display 16. Press the ‘Enter’ key and Measure- ment Correction The set correction value is applied. Value (continued) ‘CALI.’ is shown 17. Press the ‘Esc’ key The ‘YIELD’ menu item is displayed. Setting the Select the ‘IG-NR’...

  • Page 105: Displaying And Setting Parameters In The 'Datcom' Menu Item

    Setting the The inverter number flashes. Inverter Number (continued) Press the ‘Enter’ key The inverter number is applied. The ‘IG-Nr.’ menu item is displayed. Displaying and Select the ‘DAT ’ menu item Setting Parame- Press the ‘Enter’ key ters in the ‘DAT- ’...

  • Page 106: Setting The Time And Date

    Displaying and ‘PDCD ’ ... DONE Setting Parame- ters in the ‘DAT- ... or ... ’ Menu Item (continued) ‘IFCD ’ is shown DONE Press the "Esc" key 2x to exit the "DATCOM" menu item The ‘DAT ’ menu item is displayed. Data connection faulty or DATCOM is not installed If there is a faulty data connection or options are not installed, ‘ERROR...
  • Page 107 Setting the Time The first digit for the month flashes. and Date (continued) Use the ‘Up’ and ‘Down’ keys to select a value for the first month digit Press the ‘Enter’ key The second digit for the month flashes. Use the ‘Up’ and ‘Down’ keys to select a value for the second month digit 10.
  • Page 108 Setting the Time The set date then flashes. and Date (continued) 19. Press the ‘Enter’ key The time is shown (HH:MM, 0 - 24 h), the first digit for the hour flashes. 20. Use the ‘Up’ and ‘Down’ keys to select a value for the first hour digit 21.

  • Page 109: Displaying The Status Of The Fans

    Setting the Time The ‘TIME’ menu item is displayed. and Date (continued) Displaying the Select the ‘STATE ’ menu item Status of the Press the ‘Enter’ key Fans The present status of the fans is displayed. O.K. = All fans are OK and opera- ting normally Other possible fan status indicators: N.I.

  • Page 110: Displaying The Status Of The Power Stage Sets

    Displaying the SELF and TEST = self test of fan Status of the controller being run Fans (continued) The display switches between ‘SELF’ and ..‘TEST.’ Displaying the Select the ‘STATE ’ menu item Status of the Press the ‘Enter’ key Power Stage Sets The status of the first power stage set PS00 is shown,...

  • Page 111: Displaying The Version

    Displaying the The display switches between ... Status of the Power Stage Sets ‘STATE ’ LAST (continued) and ..the last saved status message. Press the ‘Esc’ key The status of the presently selected power stage set is shown again. Press the ‘Esc’...
  • Page 112 Displaying the LCD = display Version (continued) PS = power stage set SNOW = e.g., fan controller BALL Press the ‘Enter’ key Important Only when selecting the power stage set (PS): The first power stage set ‘PS 00’ is shown Use the ‘Up’...
  • Page 113 Displaying the The hardware version (HW) of the Version selected component is displayed. (continued) Press the ‘Esc’ key The last selected component is shown (e.g .: Press the ‘Esc’ key The ‘VERSI ’ menu item is display-...

  • Page 114: Setup Lock Function

    Setup Lock function General The inverter comes equipped with the "Setup Lock" function. When the "Setup Lock" function is active, the Setup menu cannot be accessed, e.g., to protect against setup data being changed by accident. You must enter code 12321 to activate / deactivate the "Setup Lock" function. Press the ‘Menu’...
  • Page 115 Activating/ ‘ON ‘ is displayed. LOCK deactivating the "Setup Lock" Use the ‘Up‘ and ‘Down‘ keys to function select the desired function (continued) = 'SETUP ' function is LOCK LOCK activated (the Setup menu cannot be accessed) = 'SETUP ' function is LOCK LOCK deactivated (the Setup menu can be...

  • Page 116: Status Diagnosis And Troubleshooting

    Check the open circuit voltage of the solar modules at the connections of inverter: Open circuit voltage < 265 V ... Error in the photovoltaic system Open-circuit voltage > 265 V ... may indicate a basic fault in the inverter. In this case, notify a Fronius-trained service technician.

  • Page 117: Power Stage Set Error Status Codes

    Power Stage Set A special status code is triggered when there is an error in the inverter in one of the Error Status power stage sets. Codes It is also possible to call up state messages even if there is no actual error in existence. This form of status polling may be found in the section ‘The Setup Menu.’...

  • Page 118: Class 1 Status Codes

    Class 1 Status Status codes of class 1 are typically Codes temporary.Their cause lies in the grid. The first reaction of your inverter is to disconnect from the grid. Then, the grid will be checked for the duration of the observation period stipulated (five minutes). If after the end of this period no further defect is identified, your inverter resumes opera- ting and feeding power into the grid.

  • Page 119: Class 2 Status Codes

    Codes temporary.Their cause lies in the grid. The first reaction of the Fronius CL is to disconnect from the grid. Then, the grid will be checked for the duration of the observation period stipulated (five minutes). If after the end of this period no further defect is identified, the Fronius CL resumes operating and feeding power into the grid.

  • Page 120: Class 3 Status Codes

    Class 2 Status Codes Jumper Test Failed (continued) Description Even though a ‘NLMON‘ Card (SW V > 1.0.0) is installed, at least one jumper on the ‘Snowball‘ PC board is not switched to position - ON - Remedy Switch jumper on the ‘Snowball‘ PC board to position - ON - Grid contactor open or supply phase for grid contactor has failed Description...
  • Page 121 Class 3 Status ‘POWER ’ (306) Codes Intermediate circuit voltage has dropped below permissible threshold value for feed in. (continued) This error is shown on the inverter with the plain text message ‘POWER LOW’. Description Short interruption of power feeding into the grid The inverter returns to the startup phase Remedy Error is corrected automatically...

  • Page 122: Class 4 Status Codes

    Description Fixed voltage lower than the current MPP-voltage Remedy If the status code persists, you should contact a Fronius-trained service technician, or remove excess modules so DC voltage fits within inverter limits. If service code persists, contact a Fronius-trained service...
  • Page 123 Description The Operating Status LED lights up orange, then the inverter attempts a restart Remedy If service code persists, contact a Fronius-trained service technician The same ID number is set at the dip switch of two power stage sets. Description...
  • Page 124 Description The inverter stops feeding power into the grid, the display shows a critical error via a red Operating Status LED Remedy If service code persists, contact a Fronius-trained service technician Invalid power stage set configuration Description The inverter stops feeding power into the grid, the display...
  • Page 125 Description The inverter stops feeding power into the grid, the display shows a critical error via a red Operating Status LED Remedy If service code persists, contact a Fronius-trained service technician Error in grid frequency recording Description The inverter stops feeding power into the grid, the display...
  • Page 126 Description The inverter stops feeding power into the grid, the display shows a critical error via a red Operating Status LED Remedy If service code persists, contact a Fronius-trained service technician Display error The display was not detected. Description...

  • Page 127: Class 5 Status Codes

    Class 4 Status Codes Incorrect phase allocation (continued) Description The setting of the dip switch on the power stage set does not match the slot (dip switch set incorrectly or incorrect slot) Remedy Set the dip switch for the respective slot You can check the ‘STATE ’...
  • Page 128 Warning message from one of the power stage sets, second power stage set working normally Remedy If service code persists, contact a Fronius-trained service technician Faulty plug connections or a power stage set has reported status code 473 (incorrect phase allocation)
  • Page 129 Codes Supply air temperature sensor defective (continued) Description Temperature sensor defective or not connected Remedy Contact a Fronius-trained service technician Fan controller temperature sensor defective Description Fan not functioning, possibly power derating Remedy Contact a Fronius-trained service technician Fan voltage exceeds limits during fan controller self test...

  • Page 130: Customer Service

    Fronius Technical Support can be reached 9 am to 9 pm eastern time at (810) 220-4414 or (219) 734-550087.

  • Page 131: Maintenance

    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. The DC main switch is only used to switch off power to the power stage sets.

  • Page 132: Operation In Dusty Environments

    Operation in When operating the inverter in extremely dusty environments or as required: Dusty Environ- as required, clean the fan filter grates using clean compressed air. ments IMPORTANT Do not blow any dust or dirt into the inverter! Push at the handles and remove the filter grates...
  • Page 133 Operation in Dusty Environ- ments (continued) Close doors Close door latches Push at the handles and insert the filter grates CAUTION! Risk of damage to the inverter by pollution. Operating the inverter without filter grates leads to pollutioning of the inverter, what can result in thermal, electrical, electronic, and other disorders.

  • Page 134: Replacing Solar Module Ground Fuses

    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. The DC main switch is only used to switch off power to power stage sets.

  • Page 135: Opening The Fronius Cl

    Opening the Fronius CL...

  • Page 136: Replacing Solar Module Ground Fuses At The Positive Pole

    Replacing Solar Test the left fuse holder for the solar module ground at the positive pole for Module Ground continuity. Fuses at the Measurement points: Ground terminal and above the fuse holder Positive Pole Important The right fuse holder for the solar module ground at the negative pole must have a plastic slug inserted.

  • Page 137: Closing The Fronius Cl

    Closing the Fronius CL Tightening torque: 1.84 ft. lb. Replace covers Close doors Secure with screws Close door latches...

  • Page 138: Replacing Power Stage Sets

    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. The DC main switch is only used to switch off power to power stage sets.

  • Page 139: Removing Defective Power Stage Sets

    Opening the Fronius CL (continued) Removing Defec- tive Power Stage Sets Unscrew the screws on the left and Remove defective power stage set right rails from the defective power stage set (2 x 5 screws) Remove rails...

  • Page 140: Sticker For Replacing Power Stage Sets

    Sticker for Repla- A sticker is located in the inverter on the top cover. The sticker provides an overview of cing Power Stage the steps required for inserting replacement power stage sets. Sets Symbols on the sticker: Check Break off positioning bolt on the back of the new power stage set rack Insert positioning bolt into the correct position for the power stage set rack...

  • Page 141: Inserting Replacement Power Stage Sets

    Sticker for Repla- Arrangement of slots and dip switch settings: cing Power Stage Sets 1100 1101 1110 (continued) PS 12 PS 13 PS 14 1001 1010 1011 PS 09 PS 10 PS 11 0110 0111 1000 PS 06 PS 07 PS 08 0011 0100...

  • Page 142: Closing The Fronius Cl

    Tightening torque: 1.84 ft. lb. Insert the left and right rails for the replaced power stage set Secure rails using 2 x 5 screws Closing the Fronius CL Close doors Close door latches...

  • Page 143: Technical Data

    Technical Data Fronius CL 33.3 Input data DELTA Recommended PV power 28.3 - 39.0 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage...
  • Page 144 Fronius CL 33.3 General data DELTA (continued) Maximum efficiency 95.9 % CEC efficiency at 208 V 94.5 % at 240 V 95.0 % Consumption in standby (night) < 5 W Consumption during operation 65 W Cooling controlled forced ventilation Protection type...

  • Page 145: Fronius Cl 36.0 Wye277

    Fronius CL 36.0 Input data Recommended PV power 30.6 - 42.1 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage 390 V Nominal input current 99.3 A...
  • Page 146 Fronius CL 36.0 General data (continued) Maximum efficiency 95.9 % CEC efficiency at 277 V 95.5 % Consumption in standby (night) < 5 W Consumption during operation 65 W Cooling controlled forced ventilation Protection type NEMA 3R Unit dimensions (w x h x d) 43.50 x 76.57 x 31.38 in.

  • Page 147: Fronius Cl 44.4 Delta

    Fronius CL 44.4 Input data DELTA Recommended PV power 37.8 - 52.0 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage...
  • Page 148 Fronius CL 44.4 General data DELTA (continued) Maximum efficiency 95.9 % CEC efficiency at 208 V 94.5 % at 240 V 95.0 % Consumption in standby (night) < 5 W Consumption during operation 85 W Cooling controlled forced ventilation Protection type...

  • Page 149: Fronius Cl 48.0 Wye277

    Fronius CL 48.0 Input data Recommended PV power 40.8 - 56.2 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage 390 V Nominal input current 132.3 A...
  • Page 150 Fronius CL 48.0 General data (continued) Maximum efficiency 95.9 % CEC efficiency at 277 V 95.5 % Consumption in standby (night) < 5 W Consumption during operation 85 W Cooling controlled forced ventilation Protection type NEMA 3R Unit dimensions (w x h x d) 43.50 x 76.57 x 31.38 in.

  • Page 151: Fronius Cl 55.5 Delta

    Fronius CL 55.5 Input data DELTA Recommended PV power 47.2 - 65.0 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage...
  • Page 152 Fronius CL 55.5 General data DELTA (continued) Maximum efficiency 95.9 % CEC efficiency at 208 V 94.5 % at 240 V 95.0 % Consumption in standby (night) < 10 W Consumption during operation 105 W Cooling controlled forced ventilation Protection type...

  • Page 153: Fronius Cl 60.0 Wye277

    Fronius CL 60.0 Input data Recommended PV power 51.0 - 70.2 kWp MPPT voltage range 230 - 500 V DC Max. input voltage 600 V DC (at 1000 W/m² / 14 °F in open circuit operation) Nominal input voltage 390 V Nominal input current 165.4 A...
  • Page 154 Fronius CL 60.0 General data (continued) Maximum efficiency 95.9 % CEC efficiency at 277 V 95.5 % Consumption in standby (night) < 10 W Consumption during operation 105 W Cooling controlled forced ventilation Protection type NEMA 3R Unit dimensions (w x h x d) 43.50 x 76.57 x 31.38 in.

  • Page 155: Explanation Of Footnotes

    Explanation of PCC = interface to the public grid Footnotes assured by electrical design of the inverter Field Adjustable Field adjustable trip points 208 V 240 V 277 V Trip Points Nominal AC output voltage, Line-to-Line, [V] Operating AC voltage range default, 183-229 211-264 n.

  • Page 156: Relevant Standards And Directives

    Relevant Standards and Directives Relevant Stan- UL 1741 FCC Part 15 B dards and Direc- IEEE 1547 NEC Article 690 tives IEEE 1547.1 C22. 2 No. 107.1-01 ANSI/IEEE C62.41 Grid Failure The standard measurement and safety procedures integrated into the inverter ensure that the power feed is immediately interrupted in the event of a grid failure (shut-off by the utility or damage to lines).

  • Page 157: Warranty And Disposal

    Fronius CL solar inverters are designed to withstand normal operating conditions and typical wear and tear when the Fronius CL solar inverter is used for its original intent, in compliance with the Fronius CL Installation and Operational Manual(s) supplied with the original equipment.

  • Page 158: Disposal Of Obsolete Equipment - Recycling

    6797 Fronius Drive, Portage, IN 46368 E-Mail: pv-us@fronius.com Telephon: (219) 734-550087 http://www.fronius-usa.com Disposal of Should your inverter be replaced at some future date, Fronius will accept the obsolete Obsolete Equip- equipment back and provide for its proper recycling. ment - Recycling...
  • Page 164 ud_fr_se_so_00913 102013...

This manual is also suitable for:

Cl 33.3Cl 48.0Cl 44.4Cl 60.0Cl 55.5

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