Fronius String Control 250/25 Operating Instructions Manual Download Page 48

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Protection type

NEMA 3R

Protection class

Type 1 (grounded)

Ambient conditions

-13°F -

+140°F

-25°C - +60°C

Dimensions w x h x d (without mounting clips)

27.56 x 19.53 x 5.00 in.

700 x 496 x 127 mm

Dimensions w x h x d (with mounting clips)

30.63 x 19.53 x 5.00 in.

778 x 496 x 127 mm

Weight

26.46 lbs.

12 kg

Relative humidity

0 - 95 %

(non condensing)

Housing material

Aluminium

Power supply

via Solar Net

optional UL listed Class 2 (12V DC)

communication protocol

SolarNet, RS 485

Connectors for data communication

2 x RJ 45

or 2 x 8 pressure type terminals

General Data

Summary of Contents for String Control 250/25

Page 1: ...Operating Instructions Data Communication Fronius String Control 250 25 Battery Charging Systems Welding Technology Solar Electronics EN US 42 0426 0082 EA 005 12042012 ...

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Page 3: ...lease read it carefully to learn about the many great features of your new Fronius product This is the best way to get the most out of all the advantages that it has to offer Please also note the safety information and the safety precautions for the product installation location Following all product instructions will ensure long lasting quality and reliability And these are the essential ingredie...

Page 4: ...ud_fr_st_et_01382 012008 ...

Page 5: ...efully read and follow all instructions and safety instructions in this manual Safety Instruc tions The following section Safety Instructions contains different warnings A warning describes a hazard to equipment or personnel It calls attention to a procedure or practice which if not correctly performed or adhered to could result in damage to or destruction of part or all of the Fronius string Cont...

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Page 7: ...aged must not be removed must not be covered or painted over For information about where the safety instructions and warning signs are located on the equipment please refer to the General section of your equipment s operating instructions Any equipment malfunctions which might impair safety must be remedied immediately before the device is turned on Your safety is at stake General NOTE Indicates a...

Page 8: ...with all general information as well as safety information and warnings from the operating instructions compliance with all inspection and maintenance requirements installation as per operating instructions Where appropriate the following guidelines should also be applied Utility company regulations regarding grid feed in Information from solar module manufacturer Intended Use Operation and or sto...

Page 9: ...ted if necessary by contacting the power supply company Information on Noise Emission Values The inverter generates a maximum sound power level of 80dB A ref 1pW at full load operation according to IEC 62109 1 The cooling of the device takes place via an electronic temperature control system at the lowest possible noise level and depends on the power used ambient temperature and the soiling level ...

Page 10: ... Electronic Equipment and its implementation as national law electrical equipment that has reached the end of its life must be collected separately and returned to an approved recycling facility Any device that you no longer require must be returned to your dealer or you must find an approved collec tion and recycling facility in your area Ignoring this EU Directive may have adverse affects on the...

Page 11: ...able Input Openings and Mounting Conduits on the Fronius String Control 250 25 11 General 11 Cable InputAreas 11 Maximum Conduit Size 12 Recommendation for Inserting Cables 12 Preparation 12 Knocking out Cabel Input Openings on the Fonius String Control 250 25 13 Mounting Conduits on the Fronius String Control 250 25 13 Connecting Solar Module Strings to the Fronius String Control 250 25 14 Genera...

Page 12: ... to the Fronius String Control 250 25 27 Terminal assignments 28 Connecting an External Power Supply 29 General 29 Safety 29 Connecting an External Power Supply 29 Setting the Address 30 Safety 30 General 30 Setting theAddress Examples 30 Installing the ProtectionAgainst Contact and Closing the Fronius String Control 250 25 31 Safety 31 Installing ProtectionAgainst Contact 31 Closing the Fronius S...

Page 13: ...This allows a defective solar module to be detected quickly Each set of 5 incoming solar module strings is grouped into one measuring channel 5 measuring channels record the total current of the respective con nected solar module strings over the entire charging day In the evening the Fronius String Control 250 25 calculates an ave rage value for all measuring channels The Fronius String Control 2...

Page 14: ...manufacturer shall not be liable for any damage resulting from such improper use Intended use also includes following all information from the operating instructions 1 Fronius String Control 250 25 1 silicone tube Intended Use Components Supplied Your Fronius String Control 250 25 complies with the requirements for the following standards Inverters converters and controllers for use in inde penden...

Page 15: ...func tions are carried out These operating instructions All system component operating instructions including safety instructions Fronius String Control 250 25 Housing Item Description 1 Cover screws 4 x 2 Cover 3 Membrane 4 Lower mounting clip 5 Housing ground inside the housing 6 Upper mounting clip Sides for possible cable input openings 2 3 1 4 6 5 Product Description Safety ...

Page 16: ...ion AWG 14 AWG 8 6 Measuring channel 2 7 Measuring channel 1 8 Connection 2 x M12 for DC cables OUT 9 Connection 2 x M12 for DC cables OUT 10 Connection 2 x M12 for grounding 11 2 x 8 Pressure type terminals for data communication cable cable cross section max AWG 14 12 25 Terminals for DC cable IN cable cross section AWG 14 AWG 8 13 13 Grounding terminals e g for grounding of max 25 solar module ...

Page 17: ...7 EN US Item Description 14 2 RJ 45 connections for data communication cable 15 Connection for external 12 V DC power supply Fronius String Control 250 25 Connection Area continued ...

Page 18: ...le Selecting a Location When selecting the location please observe the following criteria Install on a solid and planar surface the housing must not be distorted when screwing it down The ambient temperature may not fall below 13 F 25 C nor exceed 140 F 60 C NEMA 3R protection means that the Fronius String Control 250 25 is not susceptible to water spray from any direction However the ma nufacture...

Page 19: ... 3 2 3 5 4 4 x 1 Attaching the Fronius String Control 250 25 to a Concrete or Brick Wall 1 2 1 1 3 5 4 2 2 3 5 4 Drilling Pat tern a b c d a a 8 86 in 225 mm b 28 86 in 733 mm c 29 4 in 746 mm d 9 84 in 250 mm ...

Page 20: ...10 Attaching the Fronius String Control 250 25 to a Metal Carrier 1 4 1 4 x 2 3 Attaching the Fronius String Control 250 25 to a Wooden Wall 1 1 1 3 2 2 2 1 ...

Page 21: ...knocking out cable input openings General DC OUT GROUNDING OUT DC OUT DC OUT GROUNDING OUT GROUNDING OUT Cable Input Areas Generally cables can be lead into the Fronius String Control 250 25 from below or sidwise The following figure shows all possible cable input areas and the approp riate measurements On grey marked areas cable input openings can be knocked out on the Fronius String Control 250 ...

Page 22: ...refer to inserting cables from below Connec ting sidewise inserted cables is similar and will not be described in these operating instructions Recommenda tion for Inser ting Cables Maximum Conduit Size The Fronius String Control 250 25 is designed for a maximum conduit size of 4 in Preparation 1 1 4x 2 1 2 3 3 2 1 2 2 1 1 ...

Page 23: ...iately NOTE Only use water tight conduit fittings and conduits for outdoor installations Conduit fittings and conduits are not included with the Fronius String Control 250 25 1 Mount conduits and conduit fittings according to the cable input ope nings Knocking out Cabel Input Openings on the Fonius String Control 250 25 4 in 3 in 3 in 3 4 in DATCOM DC IN DC IN DC OUT Example of possible cable inpu...

Page 24: ...s such as the Fronius Configura tion Tool available on http www fronius usa com See NEC table 690 7 for the appropriate code related voltage adjust ment factor for crystalline silicon modules or use the manufacturer s specified voltage coefficient WARNING An electric shock can be fatal Inadequately sized electrical components can cause serious injuries to persons and damage to or loss of property ...

Page 25: ... the terminals all DC cables inside the Fronius String Control 250 25 must have a certain mini mum length Depending on which side the DC cables are inserted from into the Fronius String Control 250 25 different minimum lengths of the DC cables are needed For the minimum inside cable length of the Fronius String Control 250 25 consider the guidelines in the following figure consider the mandatory f...

Page 26: ...les consider technical information of the cable manufacturer Notes for Connecting Solar Module Strings to the Fronius String Control 250 25 NOTE Connecting the DC wiring with the wrong polarity may cause damage to the Fronius String Control 250 25 Check both the polarity and the open circuit voltage The DC Voltage must not exceed 600 V regard less of temperature Terminal Assi gnment with Grounded ...

Page 27: ...overload Connect a maximum of 20 A to any DC input terminal maximum 50 A per measuring channel Connecting Solar Module Strings to the Fronius String Control 250 25 Tightening torque 1 48 ft lb 10mm 1 2 5 4 3 1 2 Tightening torque 1 48 ft lb Connect grounding cables e g from solar module frame if available The third grounding terminal from top can only be connected from the side near the housing ...

Page 28: ...sed Use only solid or stranded wire Do not use fine stranded wire WARNING An electrical shock can be fatal Danger from DC voltage from solar modules Make sure that the input and output sides in front of the device are not charged before connecting anything Any and all connections should only be carried out by quali fied electricians Follow the safety rules in these operating instructions WARNING A...

Page 29: ...ted terminals can cause thermal damage to the Fronius String Control 250 25 and may cause a fire When connecting all DC IN and DC OUT cables make sure that all terminals are tightened securely using the proper torque Safety continued 1 3 2 4 1 Preparation 2 1 2x 2 2x 1 2 DC cable OUT Cable Lugs for DC Cable OUT D xmax h 0 47 in 1 14 in 1 50 in M12 29 mm 38 1 mm Cable lugs must comply with natio na...

Page 30: ...gs may only be put together on their flat side 1 2 Connection of 1 or 2 cables per DC output 3 5 2x 1 3 2 Connecting DC Cable OUT to the Fronius String Control 250 25 NOTE Label the DC cables OUT according to their designated polarity 4 2x 1 3 2 1 4 2x 1 3 2 2 Tightening torque 20 65 ft lb Tightening torque 20 65 ft lb Tightening torque 20 65 ft lb ...

Page 31: ...ote the following points when connecting String fuses must always be in the ungrounded conductor Connect the DC cable OUT to the inverter with the correct polarity NOTE Connecting the DC wiring with the wrong polarity may cause damage to the inverter Check both the polarity and the open circuit voltage The DC Voltage must not exceed 600 V regard less of temperature ...

Page 32: ...protection IN 1 8 x ISC IN 2 4 x ISC VN max input voltage of inverter being used FRONIUS CL 600 V DC IN Nominal current rating of fuse ISC short circuit current for standard test conditions STC according to solar module data sheet VN Nominal voltage rating of fuse NOTE The string fuse size must not be greater than the maxi mum fuse current rating of the PV module as provided on the PV module manuf...

Page 33: ... KLK D 15 20 0 A KLK D 20 Example Maximum short circuit current ISC of the solar module 5 75 A According to the criteria for selecting the correct fuse the fuse must have a nominal current greater than 1 8 times and less than 2 4 times the short circuit current 5 75 A x 1 8 10 35 A 5 75 A x 2 4 13 8 A The fuse that should be selected according to the Fuses table KLK D12 with 12 0 A nominal current...

Page 34: ...s for solar modules that meet the proper requirements for string fuses from the solar module manufacturer or as per the Criteria for the Proper Selection of String Fuses section max 20 A per fuse holder max 25 solar module strings max 50 A per measuring channel max 250 A of total input current Fuse dimensions Diameter 0 41 x 1 38 1 50 in 10 3 x 35 38 mm Important Please follow solar module safety ...

Page 35: ...unication cables Max cable cross section 2 5 mm Connection Options 1 Terminals for unterminated multi core data communication cables 2 RJ 45 connections Additional Insulation for Data Commu nication Ca bles Important A silicone tube is included with the Fronius String Control 250 25 for additional data communication cable insulation When laying the data communication cables on the inside of the Fr...

Page 36: ...ctricians Follow the safety rules in these operating instructions Safety Line ISDN OUT IN OUT IN OUT IN Inverter with Fronius Com Card Fronius StringControl250 25 FroniusDataloggerWeb IN 1 12V 2 GND 3 Tx 4 Rx 5 Rx 6 Tx 7 GND 8 12V OUT 1 12V 2 GND 3 Rx 4 Tx 5 Tx 6 Rx 7 GND 8 12V IN 1 12V 2 GND 3 Tx 4 Rx 5 Rx 6 Tx 7 GND 8 12V OUT 1 12V 2 GND 3 Rx 4 Tx 5 Tx 6 Rx 7 GND 8 12V IN 1 12V 2 GND 3 Tx 4 Rx 5...

Page 37: ...J 45 connection The termination plug is included with the Fronius Datalogger 1 1 2 1 2 2 OUT IN 1 Strip approx 2 3 in 50 70 mm of insulation from the end of the data communication cables Silicon tube Fixing lug Important You must know the assignment of each individual wire when connecting the wires to the terminals Connecting Unterminated Multi core Data Commu nication Ca bles to the Fronius Strin...

Page 38: ...Fronius String Control 250 25 is the last component in a Solar Net If the data communication cable is connected to the IN terminals connect the termination plug to the OUT RJ 45 connection If the data communication cable is connected to the OUT terminals connect the termination plug to the IN RJ 45 connection The termination plug is supplied with the Fronius Datalogger Terminal IN OUT assignments ...

Page 39: ...s of access Fronius recommends that the external power supply be plugged into another DATCOM component rather than the Fronius String Control 250 25 whenever possible If there is no other easier connection option the following describes the work steps involved in connecting the external power supply to the Froni us String Control 250 25 WARNING An electrical shock can be fatal Danger from DC volta...

Page 40: ...odules Make sure that the input and output sides in front of the device are not charged before connecting anything Any and all connections should only be carried out by quali fied electricians Follow the safety rules in these operating instructions Safety 0XX 1XX 0XX 1XX 0XX 1XX Setting the Address Examples 1 Jumper for the hundreds place 2 Setting dial for the tens place 3 Setting dial for the on...

Page 41: ...re that the input and output sides in front of the device are not charged before connecting anything Any and all connections should only be carried out by quali fied electricians Follow the safety rules in these operating instructions Safety Installing Protection Against Con tact Closing the Fronius String Control 250 25 1 3 1 2 1 1 2 2 3 3 Tightening torque 1 11 ft lb 1 1 4 2 3 2 4x 1 ...

Page 42: ...us Solar access software on a PC Administration Create PV System PV Systems System Name Settings String Control 1 Select the number address of the Fronius String Control 250 25 to be set 2 Strings per Measuring Channel 3 Limit Values Max Energy Deviation in Threshold Value in Ah per String Possible Set tings for the Fronius String Control 250 25 ...

Page 43: ...mpares the current of each measuring channel with the average value of all channels If the Fronius String Control 250 25 detects that one of the measuring channels deviates too much from the average a status message is sent to the Fronius Datalogger The percentage deviation above which a measuring channel is conside red faulty is defined in the Max Energy Deviation input field Standard value for m...

Page 44: ...t as an SMS fax or e mail For further details please refer to the DATCOM opera ting instructions The Fronius String Control 250 25 service codes are states 901 to 905 These service codes indicate an excessive deviation in measuring chan nels 1 to 5 We recommend that you activate the earnings comparison in the Set tings General menu This provides you with a list of service messages each time data a...

Page 45: ...the input and output sides in front of the device are not charged before conducting maintenance work Never remove a fuse while it is under load 1 2 3 5 6 NOTE Only use fuses for solar modules that meet the proper requirements for string fuses Fuse dimensions Diameter 0 41 x 1 38 1 50 in 10 3 x 35 38 mm Attach a clearly legible and easy to understand warning sign to prevent anyone from switching it...

Page 46: ...he cause of the defective fuse Replacing String Fuses continued 1 2 3 Remove the short circuit to the solar module strings Reconnect solar module strings to the Fronius String Control 250 25 Reestablish the connection to the AC supply lines 1 1 2 2 1 3 3 ...

Page 47: ...s for output poles or single hole cable lug grounding terminal or 2 hole cable lug DC input voltage range 0 600 V Max input voltage 600 V at 1000 W m 14 F in open circuit operation Max array short circuit current 12 5 A per string 1 25 Imax Max number of strings with solar module fuse 25 Admissible cable cross section min AWG 12 max AWG 8 for DC cable IN Copper solid and stranded conductors Number...

Page 48: ... 496 x 127 mm Dimensions w x h x d with mounting clips 30 63 x 19 53 x 5 00 in 778 x 496 x 127 mm Weight 26 46 lbs 12 kg Relative humidity 0 95 non condensing Housing material Aluminium Power supply via Solar Net optional UL listed Class 2 12V DC communication protocol SolarNet RS 485 Connectors for data communication 2 x RJ 45 or 2 x 8 pressure type terminals General Data ...

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Page 52: ...www fronius com USA A Fronius Worldwide www fronius com addresses Fronius USA LLC Solar Electronics Division 10421 Citation Drive Suite 1100 Brighton MI 48116 E Mail pv us fronius com http www fronius usa com Under http www fronius com addresses you will find all addresses of our sales branches and partner firms ...

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