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User Manual - SMA Solar Technology AG

1. 28 SB_SMC BENO92840 User Manua SMA Solar Technology AG Measurement Channels and Messages Measuring Description channel Vpv PV input voltage Vpv Setpoint PV target voltage Zac Grid impedance 6 2 Status Messages The inverters can be in various operating modes These are displayed as status messages which can vary according to the method of communication Message Balanced Description and corrective measure The Sunny Mini Central has disconnected from the grid or is limiting its output to 5 kVA over a 10 minute average The Sunny Mini Central is part of a three phase system equipped with two further Sunny Mini Centrals and the SMA Power Balancer to avoid unbalanced load The Balanced message is displayed for the following reasons Case 1 The operating parameter PowerBalancer is set to PhaseGuard One of the three Sunny Mini Central inverters in this system has indicated a grid fault and disconnected from the grid Consequently the other two Sunny Mini Central inverters also disconnect from the grid to avoid an unbalanced load and send the message Balanced Case 2 The operating parameter PowerBalancer is set to PowerGuard One of the 3 Sunny Mini Centrals in this system has detected a device or grid fault and disconnected from the grid The two remaining Sunny Mini Centrals reduce their output over a 10 minute average to 5 kVA in order to prevent an unbalanced load Case
2. Der Idc Corrective measures If this message occurs repeatedly please contact your installer to check the system Derating WR Overtemperature in inverter WR or in the power electronics The Sunny Boy Der T WR Sunny Mini Central reduces its power to prevent overheating of the device T WR Derating DC Der T DC Corrective measures e In the case of fan devices check heat dissipation as described in Section 5 1 Checking Heat Dissipation page 27 e To avoid unnecessary yield losses your installer should check the configuration and string size e The installer should also check whether the inverter could be installed in a better position to enhance ventilation Disturbance Disturbance This error is generated for safety reasons and prevents the Sunny Boy Sunny Mini Central from connecting to the grid Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline Earthfault Measurement of the insulation resistance of the PV system Riso Error An error has been detected Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline 30 SB_SMC BENO92840 User Manual SMA Solar Technology AG Measurement Channels and Messages Message Description and corrective measure grid mon Testing the grid status relay test etc
3. Solar Inverter SUNNY BOY SUNNY MINI CENTRAL User Manual SB_SMC BENO92840 TBE ALL Version 4 0 CGN SMA Solar Technology AG Table of Contents Table of Contents 1 1 1 1 2 1 3 1 4 2 2 1 2 2 2 3 3 3 1 3 2 3 2 1 3 3 3 3 1 3 3 2 3 3 3 3 3 4 3 3 5 3 4 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 3 4 7 3 4 8 User Manual Notes on this Manual 0 0 cece eee eee ee 5 Areg OF Validity vereinen at 5 Target Group rs un ss ee ii eat ee eat AS 5 Additional Information u u 440er 5 Symbols Sealine Sahat hit UNM ATA ee 5 Safety a is eee eke mat ee wees se ase 7 Appropriate Usage ae na 7 Safety Precautions Al ne ee 9 Identifying the product uud 10 Operating Modes 2 cece eee weenie 11 Activating the Display Illumination 222 12 Intel Phase uses er 12 AIL LEDS Gren ee nn 12 Dlermal Operation un as 12 AIL LEDS ar off cerere oia ien ne ur san een 12 The green LED is continuously on 0 eee eee ee 13 The green LED is blinking slowly 0 0000 e eee eee eee 13 The green LED is blinking rapidly 0000 e eee 13 The green LED goes out briefly 0 2 ccc eee 14 Falun eis fee 15 The red LED is continuously on 0 6 eee eee 16 The Red LED is blinking saves 222 22 Se aan 17 The yellow LED is continuously on 2 2 0 0 0 0 eee eee 17 The yellow LED blinks twice 0 0 0 cee eee 18 The yellow LED bli
4. 5s 3s The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 3 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again The inverter has detected a failure relating to unacceptable grid impedance values If the inverter frequently displays this fault and switches off during grid monitoring the cause may be that grid impedance is too high Your installer should be able to correct this problem by increasing the cross section of the power line In some cases tightening the terminal clamps on the connection cable can also help Other measures can also be taken to correct this fault but they require the explicit agreement and cooperation of the utility operator Correction of error by installer 1 Contact your installer who will open the inverter as described in the inverter installation guide and check the AC connection User Manual SB_SMC BENO92840 19 Operating Modes SMA Solar Technology AG 3 4 6 The yellow LED blinks 4 times Blink code 5s 3s The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 4 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again
5. This code can be caused by either of the following e Input voltage has exceeded the maximal permissible limit or e Error in the generator only applies to SMC YOOOTL RP 10 1TOOOOTL RP 10 1 1 OOOTL RP 10 Input voltage has exceeded the maximal permissible limit The voltage of the PV generator has exceeded the inverter s permissible input voltage NOTICE A N DC input voltage too high Destruction of the inverter e Please contact your installer who will immediately disconnect the PV generator from the inverter and check the DC voltage as described in the inverter installation guide Error in the Generator In the inverter models Sunny Mini Central YOOOTL 10000TL 11000TL with Reactive Power Control this blink code can occur in combination with the display warning lt Disturbance Earthfault gt This signifies that the insulation resistance in the generator is too low Correction of error by installer 1 Please contact your installer to have the error corrected 20 SB_SMC BEN092840 User Manual SMA Solar Technology AG Operating Modes 3 4 7 The yellow LED blinks 5 times Device fault Blink code 5s 3s The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 5 brief consecutive blinks This code is emitted 3 times in succession If after this the fault is still present the
6. CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury T NOTICE NOTICE indicates a situation that can result in property damage if not avoided R Information 1 Information provides tips that are valuable for the optimum installation and operation of your product 6 SB_SMC BENO92840 User Manual SMA Solar Technology AG Safety 2 Safety 2 1 Appropriate Usage The Sunny Boy Sunny Mini Central is a solar inverter which converts the DC current of the PV generator to AC current and feed it into the public grid More precise information on this subject and on your device can be found in the installation guide The operational limits specified in the installation guide for the particular inverter must be observed All inverters may only be operated with PV generators modules and cabling of Protection Class II rating Do not connect any sources of energy other than PV modules to the inverter Do not use the inverter for purposes other than those described here Alternative uses modifications to the inverter or the installation of components not expressly recommended or sold by the manufacturer void the warranty claims and operating permission If you have questions regarding the proper usage of the inverters please contact the SMA Solar Technology Serviceline Principle of the string inverter The string inverter is used to connect a small number of series connected sol
7. This message occurs during the startup phase before the Sunny Boy or Sunny Mini Central has connected to the grid The message usually appears in the morning and evening when there is little solar irradiation Grid monitoring is also carried out after a fault has occurred MPP The Sunny Boy Sunny Mini Central is operating in MPP mode It extracts the highest possible power output from the PV generator MPP is the standard display message when operating under normal irradiation conditions Mpp Peak The inverter is operating in MPP mode above its rated capacity MPP Search The inverter is calculating the MPP Maximum Power Point Off Grid The inverter is in Island mode This mode has been specially conceived for operation in a stand alone grid with a Sunny Island as grid controller Offset Offset adjustment of measurement electronics Stop Interruption of operation after a disturbance This status can also be set manually Turbine The inverter is in Turbine mode This mode is specifically conceived for use with Mode wind turbine systems V Const Constant voltage operation Const Volt The input voltage of the PV generators is set at a given nominal value and the inverter is not operating in MPP mode In some cases this mode can be set as the operating mode waiting The switch on conditions are not yet fulfilled User Manual SB_SMC BENO92840 31 Measurement Channels and Messages SMA Solar Technology AG 6 3 Error mes
8. during three phase grid feeding To this effect a group made up of 3 Sunny Mini Centrals are each connected via a control line to a 3 phase feeding unit Solar cell An electronic component which generates electrical energy when irradiated with sunlight Since the voltage produced by a single solar cell is very small approx 0 5 V several solar cells are combined to form a solar module Solar energy Sun energy i e energy from sunlight solar irradiation Solar generator See PV generator Solar module See PV module Solar power plant Describes the totality of components required for the exploitation and utilization of solar energy In grid connected systems this includes not only the PV generator but also the inverter e g Sunny Boy or Sunny Mini Central String Describes a group of series connected solar modules String fuse String fuses serve to protect the modules against reverse current User Manual SB_SMC BENO92840 43 Glossary SMA Solar Technology AG String inverter In string technology the PV generator is subdivided into individual module surfaces or strings each of which has an assigned string inverter This technology reduces system costs while at the same time making installation a lot simpler and increasing the energy yield and system availability Unbalanced load The difference between the power fed into the grid at the individual phase conductors In Germany it is not permitted to exceed a n
9. enters the Derating mode it will display the Derating warning until the next total shutdown of the device at the end of the day Corrective measures See Section 3 3 5 The green LED goes out briefly page 14 for more information on this warning dFac Bfr dFac Srr Drastic grid frequency fluctuations exceed the permissible range Bfr or Srr are internal messages which are of no relevance to the user For safety reasons the inverter disconnects itself from the grid Corrective measures e Have your installer check the grid frequency and the incidence of major fluctuations If repeated frequency variations occur and this is causing dFac Bfr or dFac Srr errors your installer should ask the utility operator to agree to a modification of the operating parameters dFac Max e The installer is responsible for changing the suggested parameters and making the necessary arrangements with the SMA Solar Technology Serviceline User Manual SB_SMC BENO92840 33 Measurement Channels and Messages SMA Solar Technology AG Message di Bfr di Srr Description and corrective measure The inverter has detected a drastic change in the differential current This fault only occurs in transformerless inverters that have no galvanic isolation from the grid The integrated differential current monitoring system plays an important part in ensuring personal safety A drastic change in the differ
10. 3 The operating parameter PowerBalancer is set to FaultGuard One of the 3 Sunny Mini Centrals in this system has indicated a device or grid fault and disconnected from the grid When grid failure occurs the other two Sunny Mini Centrals also disconnect from the grid to prevent an unbalanced load and send the message Balanced In the event of a device fault the fault message is sent to the other two devices with a time lapse of 5 minutes After the 5 minutes have passed the other two devices disconnect from the grid and send the message Balanced User Manual SB_SMC BENO92840 29 Measurement Channels and Messages SMA Solar Technology AG Message Derating Description and corrective measure Overtemperature in the inverter The inverter reduces its output to prevent the device from overheating Corrective measures e Inthe case of fan devices check heat dissipation as described in Section 5 1 Checking Heat Dissipation page 27 e To avoid unnecessary yield losses your installer should check the configuration and string size e The installer should also check whether the inverter could be installed in a better position with better ventilation and adequate heat dissipation Derating Idc An overcurrent condition occurs on the DC side of the inverter The inverter reduces derat Idc its output power This status does not damage your system but does result in energy 7 loss
11. A Solar Technology AG
12. MA Solar Technology AG Measurement Channels and Messages Message MWE Defect DC Description and corrective measure Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs MSD di Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs MSD FAC Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs MSD Vac Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs MSD Timeout NUW Timeout Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs MSD Zac Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Offset Fault in the acquisition of measurement data Corrective measures e Please contact your installer or the SMA Solar Techn
13. SB 1100 SB 1200 SB 1700 SB 2100TL SB 2500 SB 3000 and SB 3300TLHC CAUTION AN Danger of burn injuries due to hot enclosure parts Do not touch the inverter s enclosure during operation The heat dissipation of the Sunny Boy can be restricted if the cooling fins are dirty e Clean the cooling fins with a suitable soft brush 5 1 2 Cleaning the Fans Applies to Sunny Boy models SB 3300 SB 3800 and Sunny Mini Central If the fan guards are only covered in loose dust they can be cleaned with a vacuum cleaner If vacuum cleaning does not produce a satisfactory result please contact your installer who will dismantle the fans for cleaning e The fan cleaning procedure is described in the respective installation guide and may only be carried out by a qualified personnel 5 2 Cleaning the Display If the display or the status LEDs are so soiled that they can no longer be read they should be cleaned with a damp cloth e Never use solvents abrasives or corrosive materials for cleaning User Manual SB_SMC BENO92840 27 Measurement Channels and Messages SMA Solar Technology AG 6 Measurement Channels and Messages If your inverter is equipped with a communication component then numerous measurement channels and messages to aid diagnosis can be transmitted The following abbreviations apply BFR Operation control unit SRR Current control unit 6 1 Measuring Channels Measuring Description channel Balan
14. SMA de User Manual SB_SMC BENO92840 45 Contact SMA Solar Technology AG 46 SB_SMC BENO92840 User Manual SMA Solar Technology AG Legal Restrictions The information contained in this document is the property of SMA Solar Technology AG Publishing its content either partially or in full requires the written permission of SMA Solar Technology AG Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission Exclusion of liability The general terms and conditions of delivery of SMA Solar Technology AG shall apply The content of these documents is continually checked and amended where necessary However discrepancies cannot be excluded No guarantee is made for the completeness of these documents The latest version is available online at www SMA de or from the usual sales channels Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following e Damages during transportation e Improper or inappropriate use of the product e Operating the product in an unintended environment e Operating the product whilst ignoring relevant statutory safety regulations in the deployment location e Ignoring safety warnings and instructions contained in all documents relevant to the product e Operating the product under incorrect safety or protection conditions Altering the product or supplied so
15. and is now in normal grid feed operation 3 3 3 The green LED is blinking slowly Waiting Grid Monitoring The inverter is checking if the start conditions necessary for feeding the grid e g start voltage start time are fulfilled and then begins monitoring the grid The PV voltage must reach the specified minimum value at least once before the inverter begins feeding into the grid 3 3 4 The green LED is blinking rapidly Stop The inverter is in Stop mode This occurs for instance when the measurement electronics are being calibrated After this the device switches to Waiting mode The Stop mode can be manually pre set by the installer via an appropriate communications product In this case the inverter remains in Stop mode until a new operating mode MPP mode Constant voltage mode Turbine mode has been set User Manual SB_SMC BENO92840 13 Operating Modes SMA Solar Technology AG 3 3 5 The green LED goes out briefly Derating The Derating mode is a normal operating mode which may occur occasionally and can have several causes Temperature derating The temperature monitoring of the inverter has reduced the output power to prevent the device from overheating The inverter switches to the Temperature derating mode If the Sunny Boy Sunny Mini Central frequently switches to this mode p
16. anual SMA Solar Technology AG Operating Modes 3 4 2 The Red LED is blinking Fault on the DC side Red LED blinking This blink code overrides any signals on the green or yellow LEDs This blink code can only occur in the following device types SMC 9000TL 10 10000TL 10 11000TL 10 e SMC 9000TLRP 10 10000TLRP 10 11000TLRP 10 Possible causes Atleast one of the varistors is defective Display message lt Check Varistor gt Atleast one of the string fuses is defective Display message lt DC fuse gt In both cases the inverter continues feeding into the grid Correction of error by installer Contact your installer to have the error corrected Instructions on correction errors can be found in the inverter installation guide 3 4 3 The yellow LED is continuously on Permanent Disable In the event of a recurring fault the inverter switches from operating mode to Permanent Disable mode and ceases grid feed A fault may have occurred that cannot be resolved on site If the inverter is equipped with a communications interface the installer can try to rectify the problem with the help of a communications product Should this be unsuccessful please contact the SMA Solar Technology Serviceline see Section8 Contact page 45 to discuss further action to solve the problem User Manual SB_SMC BEN092840 17 Operating Modes SMA Solar Technology AG 3 4 4 The yellow LED blinks twice Grid fault Blink cod
17. ar modules strings to the public supply grid This way even a large PV generator can be constructed from a large number of individual strings each having its own string inverter The energy is then combined on the AC side Principle of a grid connected PV system with a Sunny Boy Sunny Boy Distribution Public grid User Manual SB_SMC BEN092840 7 Safety SMA Solar Technology AG Principle of a grid connected PV system with a Sunny Mini Central Sunny Mini Central PV modules Distribution Public Grid 8 SB_SMC BENO92840 User Manual SMA Solar Technology AG Safety 2 2 Safety Precautions DANGER High voltages in the inverter Death resulting from electric shock and burns The following work on the inverter must be carried out by a qualified personnel only e Electrical installation e Repairs e Modifications Even when no external voltage is applied high voltages can still be present in the device These high voltages can result in death or serious injury CAUTION AN Enclosure body can get hot during operation Risk of burn injuries Do not touch The temperature of some parts of the inverter enclosure in particular the temperature of the heatsinks can reach over 60 C in normal operation e Only touch lid and display during operation NOTICE Overvoltages in the inverter Destruction of the inverter and voiding of warranty claims e Please contact your installer whenever the
18. cer Displays the currently active operating mode ofthe Sunny Mini Central which has been set via the operating parameter PowerBalancer Earthfault Riso Insulation resistance of the PV system before grid connection E total Total amount of energy fed into the grid Error Identification of the current disturbance error Error Cnt Number of errors which have occurred since the last reset Event Cnt Number of events which have occurred Fac Grid frequency Fault current Differential current of the PV system inverter and PV generator h On Total number of operating hours h total Total number of grid feeding operational hours lac Grid current active current Ipv DC current Is Apparent current applies only to inverters with Reactive Power Control Mode Display of the current operating mode Power On Total number of grid connections Pac Generated AC power Phase The phase to which the inverter is connected The phase L1 L3 is set via the operating parameter Grid connection PF Displacement factor cos p applies only to inverters with Reactive Power Control Qac Reactive power applies only to inverters with Reactive Power Control Sac Apparent power applies only to inverters with Reactive Power Control Serial Number Serial number of inverter Vac Grid voltage Vfan Fan supply voltage only in inverters equipped with an active cooling system V Fan
19. cited are displayed Qac negative underexcited e This is followed by the total energy produced so far E total F2d 4klh and the hours the device has been in operation Eu F eu oleh 4 2 1 Display Messages when Fault Warnings Occur If a fault warning occurs the display immediately switches to Warning and the background illumination lights up When warnings occur the inverter continues feeding into the grid The following illustrations give three examples of possible fault warning scenarios e This warning appears after the inverter has been in Derating mode for 10 minutes e This warning means that one of the varistors is defective If this warning appears it means that one of the string fuses is defective User Manual SB_SMC BENO92840 25 Information on the Display SMA Solar Technology AG 4 2 2 Display Messages for Plant Disturbances If an operational failure occurs the display immediately switches to Disturbance and the background illumination lights up In this case the inverter stops feeding into the grid The following illustrations give examples of possible failure scenarios e The cause of the failure is displayed for 5 seconds in the second line of the display e Ifthe failure is triggered by a measured value then Fr j the value measured at the time of going into fault is i displayed If a further measurement is possible the current value is displayed in the second line e Afte
20. connect the PV generator from the inverter Otherwise the inverter may be damaged e Have your installer check the plant configuration and the DC voltage before reconnecting the inverter to the DC voltage Uzkposneg lt 10 Disturbance in the intermediate circuit Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs UZWK Max The internal hardware monitor has detected an overvoltage condition in the intermediate circuit of the inverter Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Watchdog Internal program run fault Watchdog Srr Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Zac Bfr The grid impedance is no longer within the permissible range Bfr or Zaes n Srr is an internal message that has no meaning for the user For safety reasons the inverter disconnects itself from the grid The impedance is calculated from the grid impedance and the impedance of the grid connection cable AC cable of the inverter Corrective measures e Please contact your installer to check the grid impedance and the grid connection at the inverter Use a cable with sufficiently large cross section low impedance as recommended in the installation guide It may also be possible to rectify this fault by tightening the screws of the AC terminals Ifthis fault r
21. connects from the grid and then attempts to reconnect to the grid Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Shutdown Temporary inverter fault Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline User Manual SB_SMC BENO92840 39 Measurement Channels and Messages SMA Solar Technology AG Message STM Timeout Description and corrective measure Internal program run fault Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Trafo Temp F Temperatures in the transformer have exceeded the acceptable limit The inverter stops feeding the grid until the temperature reverts to within the admissible range Corrective measures e If this problem recurs check the heat dissipation of the inverter as described in Section 5 1 Checking Heat Dissipation page 27 Trafo Temp W Temperatures in the transformer have exceeded the acceptable limit The inverter stops feeding the grid until the temperature reverts to within the admissible range The Trafo Temp W warning is displayed until final shut down at the end of the day Corrective measures e Check the heat dissipation of the inverter as described in Section 5 1 Checking Heat Dissipation page 27 Vac Bfr Vac Srr The g
22. e The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 2 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again With this fault signal the inverter indicates a grid fault which can have the following causes e Grid undervoltage voltage drop protection e Grid overvoltage voltage rise protection e Grid underfrequency frequency decrease protection e Grid overfrequency frequency increase protection e Grid frequency change dFac Voltage increase protection activated e Faulty grid connections e g N and L swapped or PE not connected SMC 9OOOTL RP TOOOOTL RP 1 1 OOOTL RP Display message lt Check L N PE gt e In systems which consist of 3 or more Sunny Mini Centrals the Power Balancer has detected a fault 5 Correction of error by installer il Contact your installer to have the following points checked e Check whether there is a general power failure check function of other energy consumers e Check the fuse of the inverter power supply e Check whether the circuit breaker is switched on e Check the inverter s grid connection 18 SB_SMC BEN092840 User Manual SMA Solar Technology AG Operating Modes 3 4 5 The yellow LED blinks 3 times Grid impedance wm 209 Blink code LO gt UL w
23. ecurs please contact the SMA Solar Technology Serviceline User Manual SB_SMC BEN092840 41 Glossary SMA Solar Technology AG 7 Glossary AC Abbreviation for Alternating Current DC Abbreviation for Direct Current Derating A controlled reduction in performance usually dependent on component temperatures Compared with the also common practice of completely shutting down the device derating has a less drastic effect on the external grid Grid connected system PV system which is connected to the power supply grid of an external energy supplier Grid impedance The grid impedance is a characteristic grid specification which is determined both by the grid infrastructure and by the number of power suppliers and power consumers If supply to the grid section drops due to a grid shutdown on the part of the adjacent energy suppliers medium voltage transformers the grid impedance changes abruptly In order to detect this occurrence and to prevent the formation of an unwanted stand alone grid SMA Grid Guard monitors the grid impedance and disconnects the inverter from the grid in the event of a sudden impedance variation Inverter A device for converting the direct current DC from the PV generator into alternating current AC which is used by most normal household devices and especially for feeding energy into an existing supply grid Maximum Power Point MPP The operating point current voltage of
24. emplified by the Sunny Boy 3800 green oe red Ne yellow LED Meaning Inverter Green In operation All Sunny Boys Sunny Mini Centrals Red Ground fault or varistor For the Sunny Boy models SB 1100 SB 1200 defective SB 1700 SB 2100TL SB 2500 SB 3000 SB 3300 SB 3300TLHC SB 3800 and Sunny Mini Central models SMC 4600A SMC 5000A SMC 6000A SMC 7000HV SMC 6000TL SMC ZOOOTL SMC 8000TL Ground fault varistor defective For Sunny Mini Central models SMC 9000TL 10 or string fuse defective 10000TL 10 11000TL 1O and SMC YOOOTLRP 10 10000TLRP 10 1 1OOOTLRP 10 Yellow Disturbance All Sunny Boys Sunny Mini Centrals LED Display If you do not have any means of plant communication it is advisable particularly during the first year of operation to keep a close eye on this display at different times of day and under varying solar irradiation conditions This will enable you to recognize errors at an early stage A detailed description of the possible LED signals and blink codes is given in the following section User Manual SB_SMC BEN092840 11 Operating Modes SMA Solar Technology AG 3 1 Activating the Display Illumination The background illumination is switched on by tapping on the enclosure lid Tapping again switches the display on to the next message After 2 minutes the illumination switches off automatically 3 2 Initial Phase 3 2 1 AllLEDs are on Initiali
25. ential current can be caused by a sudden grounding fault residual current or an actual fault in the device The inverter disconnects from the grid Corrective measures e If the message dI Bfr or dl Srr appears for no obvious reason please contact your installer to verify whether the plant insulation might have a ground fault as described in the inverter installation guide di Mess Srr Fault Curr Meas Deviation in the differential current measurement differential current Corrective measures Ifthis fault message is displayed repeatedly it means that inverter operation is permanently disabled If the inverter is equipped with a communication interface the installer can try to rectify the fault with the help of a communication product e Should this be unsuccessful please contact the SMA Solar Technology Serviceline di Test Error in differential current measurement Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs dZac Bfr Sudden changes in grid impedance exceed the permissible range Bfr draer or Srr are internal messages which are of no relevance for the user For safety reasons the inverter disconnects itself from the grid Corrective measures e Have your installer check the grid frequency and the incidence of major fluctuations If repeated frequency variations occur and this is causing dZac B
26. fault signal starts over again For all transformerless devices this blink code can occur in combination with the display warning lt Disturbance Earthfault gt with the exception of SMC Y000TL RP 10 1 OOOOTL RP 10 11 OOOTL RP 10 for which the warning is lt Disturbance Earthfault Sense gt and is caused by a fault in the insulation monitoring system Correction of error by installer 1 If the device failure has a severe negative impact on normal operation you must contact your installer who will check the inverter and the entire plant installation It is essential to ensure that devices without transformers with TL in the device name are correctly grounded User Manual SB_SMC BENO92840 21 Operating Modes SMA Solar Technology AG 3 4 8 The yellow LED blinks 6 times Discharge current too high Blink code Discharge current The fault Discharge current too high can only occur in transformerless inverters Transformerless inverters can be identified by their device designation The TL in the name stands for transformerless e g Sunny Mini Central SMC 6000TL The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 6 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again The discharge current from the inve
27. fr or dZac Srr errors your installer should ask the utility operator to agree to a modification of the operating parameters dZac Max e The installer is responsible for changing the suggested parameters and making the necessary arrangements with the SMA Solar Technology Serviceline 34 SB_SMC BEN092840 User Manual SMA Solar Technology AG Measurement Channels and Messages Message Description and corrective measure EEPROM Transition disturbance during reading or writing of EEPROM data This data is not essential for safe operation e The disturbance has no effect on the performance of the inverter EEPROM dBh EEPROM data is defective the device has switched off because the loss of data has disabled important functions of the inverter Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline EeRestore One of the duplicate data sets in the EEPROM is defective and has been reconstructed without loss of data e This error message is for information purposes only and has no effect on the performance of the inverter Fac Bfr The grid frequency is no longer within the permissible range Bfr or Srr Faes r is an internal message with no relevance for the user For safety reasons FacFast the Zur Boy Sunny Mini Central disconnects itself from the grid Corrective measures e Please contact your installer to deal with the fault e If the grid frequency is wi
28. ftware without authority e The product malfunctions due to operating attached or neighboring devices beyond statutory limit values In case of unforeseen calamity or force majeure The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions e SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by SMA Solar Technology AG This also applies to the provision or non provision of support activities e Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements of the manufacturer SMA Factory Warranty The current guarantee conditions come enclosed with your device These are also available online at www SMA de and can be downloaded or are available on paper from the usual sales channels if required Trademarks All trademarks are recognized even if these are not marked separately Missing designations do not mean that a product or brand is not a registered trademark The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG Inc and any use of such marks by SMA Solar Technology is under license SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany Tel 49 561 9522 0 Fax 49 561 9522 100 www SMA de E Mail info SMA de 2004 to 2009 SMA Solar Technology AG All rights reserved User Manual SB_SMC BENO92840 47 SM
29. ful please contact the SMA Solar Technology Serviceline REL_INV_CLOSE REL_GRID_CLOSE A grid relay does not close The inverter checks the relays connecting it to the grid before feeding power into the grid If the grid relays do not function properly the inverter does not connect to the grid for safety reasons Corrective measures Ifthis fault message is displayed repeatedly it means that inverter operation is permanently disabled If the inverter is equipped with a communication interface the installer can try to rectify the fault with the help of a communication product e Should this be unsuccessful please contact the SMA Solar Technology Serviceline REL_INV_OPEN REL_GRID_OPEN A grid relay does not open The inverter checks the relays connecting it to the grid before feeding power into the grid If the grid relays do not function properly the inverter does not connect to the grid for safety reasons Corrective measures Ifthis fault message is displayed repeatedly it means that inverter operation is permanently disabled If the inverter is equipped with a communication interface the installer can try to rectify the fault with the help of a communication product e Should this be unsuccessful please contact the SMA Solar Technology Serviceline 38 SB_SMC BEN092840 User Manual SMA Solar Technology AG Measurement Channels and Messages Message Riso Earthfault De
30. grid conditions checked Imax DC Overcurrent on the DC input side of the Sunny Boy Multi String A current exceeding the maximum permissible value has been detected at the input of the inverter Corrective measures e Please contact your installer to have the plant configuration checked K1 Close Fault during relay test K1 Open K2 Open Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline when this problem occurs several times in succession Kom DC BFS Internal communication fault Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs L lt gt N Land N are swapped on the AC connection Corrective measures e Please contact your installer to have the plant checked over L Netz A grid relay is faulty The inverter checks the relays connecting it to the LWR grid before feeding power into the grid If the grid relays do not function roperly the inverter does not connect to the grid for safety reasons N Netz Properly g ty N WR Corrective measures e If this fault message is displayed repeatedly it means that inverter operation is permanently disabled If the inverter is equipped with a communication interface the installer can try to rectify the fault with the help of a communication product e Should this be unsuccessful please contact the SMA Solar Technology Serviceline 36 SB_SMC BEN092840 User Manual S
31. hts up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 7 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again The Sunny Boy Sunny Mini Central has detected a drastic change in differential current and immediately stopped feeding into the grid The integrated all pole sensitive residual current monitoring unit monitors the differential current relative to ground from the inverter supply connection right through to the PV generator This additional personal protection system reacts to a drastic change in differential current of Ipy gt 30 mA and disconnects the Sunny Boy Sunny Mini Central from the grid within 0 2 seconds User Manual SB_SMC BENO92840 23 Information on the Display SMA Solar Technology AG 4 Information on the Display Sunny Boy and Sunny Mini Central inverters are supplied with a factory installed LC display on the enclosure lid z Display Messages 1 Detailed explanations of the individual error and fault messages can be found in Section p g 6 Measurement Channels and Messages page 28 A description and explanation ofthe operating parameters can be found in the Technical Information Operating parameters Sunny Boy Sunny Mini Central in the download area at www SMA de en 4 1 Display Messages in the Startup Phase e After startu
32. ill be accessible at all times 1 1 Area of Validity This manual applies to the following SMA inverters Sunny Boy Sunny Mini Central SB 1100 SMC 4600A discontinued model SMC 5000A SB 1200 SMC 6000A available on request SMC 6000TL SB 1700SB 1700 SMC 7000HV SB 2100TL SMC 7000HV 11 SB 2500 available on request SB 3000 SMC 7000TL SB 3300TL HC SMC 8000TL SB 3300 SMC 9000TL 10 SB 3800 SMC 9000TLRP 10 SMC 10000TL 10 SMC 10000TLRP 10 SMC 11000TL 10 SMC 11000TLRP 10 1 2 Target Group This manual is for the user of the inverter types listed in the section Area of Validity 1 3 Additional Information For information on assembly installation commissioning and servicing of the inverter as well as for the device specific technical data please refer to the attached installation guide You will find further information on special topics such as details of the operating parameters in the download area at www SMA de en User Manual SB_SMC BEN092840 5 Notes on this Manual SMA Solar Technology AG 1 4 Symbols Used The following types of safety instructions and general information are used in this manual DANGER DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION A N A
33. inverter reports an error User Manual SB_SMC BENO92840 9 Safety 2 3 Identifying the product You can identify the inverter by the type plate The type plate is usually located on the right side of the enclosure The type plate specifies among other things the device type Type Model the serial number Serial No and the device specific key data of the product The type plate illustrated here is a typical example showing the Sunny Boy 3800 10 SB_SMC BENO92840 ag SMA Solar Technology AG www SMA de aa SMA Solar Technology AG Sunny Boy Photavataicshing inveter Made in Germany Type SB 3800 Serial No 2000165882 Vise oe 500 V Vic 200 400 V i Macs 20 A Vieles 230 V BA 50 60 Hz Penn 3800 W la 16 5 A cos 1 xxx AA amp outdoor pe 2000165882 A A N J N 7 D 4 User Manual SMA Solar Technology AG Operating Modes 3 Operating Modes The different operating modes are indicated by 3 light emitting diodes LEDs on the inverter lid and also via the integrated display see Section 4 Information on the Display page 24 To allow the device to signal its operating mode via the 3 integrated LEDs the inverter must be connected to the DC side of the system The level of solar irradiation must be high enough to supply the inverter with sufficient DC voltage The following diagram shows the 3 LEDs as ex
34. lease check the heat dissipation see Section 5 1 Checking Heat Dissipation page 27 For all Sunny Mini Centrals as well as the Sunny Boy models SB 3300 SB 3800 check whether the fans are soiled Maintenance and Cleaning of the Fans 1 The fan cleaning procedure is described in the respective installation guide Current derating Due to the type of module or the output and wiring of the generator the PV side input current exceeds the maximum possible input current The inverter switches to the Current derating mode in order to protect itself against overload Output derating This operating mode only occurs in systems which are operated using the Sunny Mini Central with integrated SMA Power Balancer set to PowerGuard Frequency dependent output derating P f This operating mode occurs when the function which limits active power P is activated as a function of grid frequency fac You will find more detailed information on this function in the installation guide for Sunny Mini Central 9000TL 10000TL 11 000TL with Reactive Power Control SB_SMC BENO92840 User Manual SMA Solar Technology AG Operating Modes 3 4 Failures A distinction is made between critical and non critical failure messages Thanks to a comprehensive safety concept the number of critical conditions that can occur has been reduced to one single situation PV generator voltage is too high This is indicated by the following blink code on the
35. nks three times 0 0 0 0 0 c cece eee eee 19 The yellow LED blinks 4 times 0 0 0 0 0c cece eee eee 20 The yellow LED blinks 5 times 00 0000 eee 21 The yellow LED blinks 6 times 00 0 e cece eee 22 SB_SMC BENO92840 3 Table of Contents SMA Solar Technology AG 3 4 9 4 4 4 2 4 2 1 4 2 2 4 2 3 5 1 5 1 1 5 1 2 5 2 6 1 6 2 6 3 The yellow LED blinks 7 times 0 0 0 cece eee eee 23 Information on the Display eee econ 24 Display Messages in the Startup Phase 24 Display Messages During Operation 006 25 Display Messages when Fault Warnings Occur 20 000 25 Display Messages for Plant Disturbances 00sec eee eee 26 Rapid Blinking of Background Illumination 000 eee eee eee 26 Maintenance and Cleaning 22eeeeeee 27 Checking Heat Dissipation sea char 27 Cleaning the Cooling Fins es 0 4444 8er elta aa 27 Cleaningithe Fansa naar i ta date 27 Cleaning the Display on de ne 27 Measurement Channels and Messages 28 Measuring Channels Sasssn ae 28 Status Messages nu 29 Eror MESSA gE Sa SEHEN N are 31 Glossary nn nn 42 Contacts aan 45 SB_SMC BEN092840 User Manual SMA Solar Technology AG Notes on this Manual 1 Notes on this Manual This manual contains instructions on how to operate the SMA inverters Sunny Boy and Sunny Mini Central Store this manual where it w
36. ology Serviceline if this problem recurs PowerBalance The Sunny Mini Central is part of a three phase system with two further Sunny Mini Centrals This is equipped with the SMA Power Balancer for preventing unbalanced loads The operating parameter PowerBalancer is set to PhaseGuard or FaultGuard Corrective measures e For more detailed descriptions of the operation modes PhaseGuard and FaultGuard please refer to Section 6 2 Status Messages page 29 under Balanced User Manual SB_SMC BENO92840 37 Measurement Channels and Messages SMA Solar Technology AG Message Description and corrective measure Rechner Functional fault in one of the two microcontrollers MSD Timeout Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline when this problem occurs several times in succession Relais 1 A grid relay is faulty The inverter checks the relays connecting it to the Relais 2 grid before feeding power into the grid If the grid relays do not function Relais 3 properly the inverter does not connect to the grid for safety reasons Relais 4 Corrective measures Ifthis fault message is displayed repeatedly it means that inverter operation is permanently disabled If the inverter is equipped with a communication interface the installer can try to rectify the fault with the help of a communication product e Should this be unsuccess
37. ominal output of 4 6 kVA plus 10 overload i e 5 kVA in total Varistor In the Sunny Boy and Sunny Mini Central varistors protect the electronics from atmospherically coupled energy peaks such as those that can occur in the conductor loop of the PV generator in the event of nearby lightning strikes They limit overvoltage by discharging the coupled current to earth During operation varistors are subject to a certain degree of ageing Varistors which have been in service for a long time or have already had to discharge overvoltages are subject to a decrease in internal resistance and heat up significantly Thermally monitored varistors recognize this increased temperature and automatically disconnect from the power circuit If the protective function of the varistor is no longer given the inverter triggers a fault message 44 SB_SMC BENO92840 User Manual SMA Solar Technology AG Contact 8 Contact If you have technical problems concerning our products please contact our Serviceline We require the following information in order to provide you with the necessary assistance Inverter type e Communication method e Type and number of modules connected Serial number of inverter e Blink code or message displayed by the inverter SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany www SMA de Serviceline Inverters 49 561 9522 1499 Communication 49 561 9522 2499 Fax 49 561 9522 4699 E mail Serviceline
38. p of the inverter the display first shows SPs BOJ HHH the device type hras e After 6 seconds the firmware versions of the GFE lersian s SER Usesior Hamm operation control unit BFR and the current control unit SRR are displayed e Inverters that are equipped with the SMA Power E E EE Balancer subsequently indicate the operating mode ea ofthe SMA Power Balancer C 24 SB_SMC BEN092840 User Manual SMA Solar Technology AG Information on the Display 4 2 Display Messages During Operation The display shows the most important operating data of the inverter in an alternating cycle The following diagrams serve to clarify the messages Each message is displayed for 5 seconds Then the cycle starts over again e First of all the energy generated that day and the current operating mode are displayed Ecc a oe Uh ee en Mole MPP e Next the current feed in power and the voltage of Fac the PV generator except in the case of SB 3300TLHC appear e Inthe case of the Sunny Boy 3300TL HC the momentary feed in power and the output voltage are displayed e The next reading on the display of the Sunny Boy 3300TL HC gives the current input voltage and input power e Inthe case of the Sunny Mini Central with Reactive Power Control after a further 5 seconds or following another tap the current reactive power value Qac and the displacement factor cos PF Qac positive overex
39. r another 5 seconds the normal operating data appear If the fault is still present the fault display cycle starts over again An overview of the status and error messages can be found in Section 6 Measurement Channels and Messages page 28 of this documentation recognized an error in the EEPROM firmware a Please contact SMA Solar Technology to have the Be error corrected Error ROM indicates that the inverter has 4 2 3 Rapid Blinking of Background Illumination DC Overvoltage If an excessive DC input voltage is present at the Sunny Boy Sunny Mini Central this is indicated by rapid blinking ofthe background illumination and the message shown on the right i NOTICE o DC input voltage too high Destruction of the inverter e Please contact your installer who will immediately disconnect the PV generator from the inverter and check the DC voltage as described in the inverter installation guide Piegueruol tagel HHHECT PE 26 SB_SMC BEN092840 User Manual SMA Solar Technology AG Maintenance and Cleaning 5 Maintenance and Cleaning Check the correct operation of the inverter at regular intervals Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses Also check the inverters and the cables for visible external damage Have repairs carried out if necessary 5 1 Checking Heat Dissipation 5 1 1 Cleaning the Cooling Fins Applies to Sunny Boy models
40. rid current is no longer within the permissible range Bfr or Srr is an internal message that has no meaning for the user This can be caused by any of the following e Grid disconnected line circuit breaker fuse e AC cable is broken or e AC cable is highly resistive For safety reasons the inverter disconnects itself from the grid Corrective measures e Please contact your installer to check the grid voltage and the grid connection at the inverter e Ifthe grid voltage is outside the acceptable range due to local grid conditions your installer should ask the utility operator whether the voltage can be adjusted at the feed in point or whether they would agree to modifications in the monitored operational limits operating parameters Vac Min and Vac Max e If the grid frequency is within the tolerable range yet Vac Bfr or Vac Srr faults are still being displayed please contact the SMA Solar Technology Serviceline VDiff UDiff Disturbance in the intermediate circuit Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs 40 SB_SMC BENO92840 User Manua SMA Solar Technology AG Measurement Channels and Messages Message Description and corrective measure VpvMax Overvoltage at DC input Vpv Max Corrective measures e Please contact your installer who will immediately dis
41. rter and the PV generator is too high The Sunny Boy Sunny Mini Central interrupts grid feeding immediately after exceeding a threshold value and switches back onto the grid automatically after testing If necessary testing will be repeated several times Discharge current is dependent on the capacity of the PV generator relative to ground and also depends on the type of modules and manner of installation as well as the weather conditions Therefore it is quite normal for this value to vary over time However if the inverter frequently displays this fault please notify the installer who installed your PV system and clarify the reasons for the high level of discharge current This fault message can also be triggered by a PE connection which is not connected to the inverter Correction of error by installer 1 Please contact your installer to deal with the fault or get in touch with the SMA Solar Technology Serviceline 22 SB_SMC BEN092840 User Manual SMA Solar Technology AG Operating Modes 3 4 9 The yellow LED blinks 7 times Drastic change in differential current Blink code A Differential current 1 The fault Drastic change in differential current can only occur in transformerless inverters Transformerless inverters can be identified by their device designation The TL in the name stands for transformerless e g Sunny Mini Central SMC 6000TL The yellow fault LED lig
42. s 9OOOTL 1OOOTL 11 000TL Corrective measures e Please contact your installer to check the AC connection Check Varistor At least one of the varistors is defective only applies to Sunny Mini Central models 9OOOTL 1000TL 11 000TL Corrective measures e Have your installer check the function of the varistors as described in the inverter installation guide 32 SB_SMC BEN092840 User Manua SMA Solar Technology AG Measurement Channels and Messages Message Description and corrective measure DCBFS Startup Internal communications fault Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs DC fuse At least one of the string fuses is defective only applies to Sunny Mini Central models 9OOOTL 1000TL 11 000TL Corrective measures e Have your installer check the string fuses and replace them where necessary Further information is to be found in the inverter installation guide DCBFS Version DC BFS has been installed with the wrong firmware version Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline when this problem occurs Delta Bfr Srr Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline when this problem occurs Derating Once the inverter
43. sages If an error occurs the Sunny Boy and Sunny Mini Central generate a message which depends on the operating mode and the error detected Message IPV Overvoltage IDISCONNECT DC Description and corrective measure Overvoltage at DC input Corrective measures e Please contact your installer who will immediately disconnect the PV generator from the inverter Otherwise the inverter may be damaged e Your installer should check the DC voltage as described in the inverter installation guide ACVtgRPro The 10 minute average grid voltage is no longer within the permissible range This can be caused by either of the following e The grid voltage at the connection point is too high e The grid impedance at the connection point is too high The inverter disconnects to assure compliance with the voltage quality of the grid Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline Bfr Srr Internal measurement comparison fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs CAN Internal communication fault Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs Check L N PE Land N are swapped on the AC connection or PE is not connected only applies for Sunny Mini Central model
44. scription and corrective measure The electrical insulation of the PV system to ground is faulty The resistance between the DC plus and or DC minus connection and ground is outside the defined limit range Corrective measures e Please contact your installer to check whether your system is properly insulated or a ground fault has occurred Further information is to be found in the inverter installation guide Riso Sense Earthfault Sense The insulation measurement has failed Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs ROM The inverter firmware is faulty Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs SD DI Wandler The inverter has detected an insulation fault on the DC side Corrective measures e Please contact your installer to check whether the plant is properly insulated or a ground fault has occurred Further information is to be found in the inverter installation guide SD Imax The inverter has detected an overcurrent on the AC side It disconnects from the grid for safety reasons and then attempts to reconnect to the grid Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs SD WR Bruecke The inverter has detected a fault in the power electronics It dis
45. the PV generator at which the highest possible performance under the prevailing conditions is achieved The actual MPP changes constantly depending on the level of solar irradiation cell temperature etc MPP tracker A device that adjusts the voltage and current of a PV generator so that it operates at its Maximum Power Point PV Abbreviation for photovoltaic describing the conversion of solar energy into electrical energy PV generator Technical device for the conversion of solar energy into electrical energy This normally refers to all installed and electrically connected solar modules in a PV system 42 SB_SMC BEN092840 User Manual SMA Solar Technology AG Glossary PV module A collection of solar cells in an enclosure that protects the sensitive cells from mechanical stress and allows easy installation Reactive Power Control Inverters with Reactive Power Control are inverters capable of utilizing reactive power By setting a default value for the displacement factor cos p they can feed reactive power to the grid SMA Grid Guard The SMA Grid Guard concept monitors for instance the voltage and frequency of the connected AC grid according to predefined parameters This serves to prevent the formation of a stand alone grid in the event of grid disconnection SMA Power Balancer The SMA Power Balancer is a serial feature of the Sunny Mini Central The SMA Power Balancer prevents the formation of an unbalanced load
46. thin the tolerance range yet Fac Bfr Fac Srr or FacFast faults are still being displayed please contact the SMA Solar Technology Serviceline HW Signal Internal measurement fault or hardware defect Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline if this problem recurs lac DC_Offs Srr The DC component of the electricity being fed into the grid has exceeded the permissible range For safety reasons the inverter disconnects itself from the grid Corrective measures e Ifthe grid current is outside the permissible range due to local grid conditions contact the local utility operator for assistance e If the grid current is within the tolerance range yet the lac DC_Offs Srr fault is still being displayed please contact the SMA Solar Technology Serviceline IGBTs The internal hardware monitoring system has detected a fault in the power electronics Corrective measures e Please contact your installer or the SMA Solar Technology Serviceline User Manual SB_SMC BEN092840 35 Measurement Channels and Messages SMA Solar Technology AG Message Description and corrective measure Imax Overcurrent on the AC side This fault code is displayed if the current in the AC grid is greater than specified Corrective measures e Please contact your installer to have the plant configuration and the
47. y More detailed diagnoses are possible using the communications options detailed in Section 6 Measurement Channels and Messages page 28 User Manual SB_SMC BEN092840 15 Operating Modes SMA Solar Technology AG 3 4 1 The red LED is continuously on Insulation Fault or Defective Varistor The red LED on the Sunny Boy Sunny Mini Central is permanently on With this blink code it is irrelevant whether the green or yellow LEDs are on or blinking A grounding error has occurred or one of the thermally monitored varistors on the DC input side is defective as a result of overvoltage or ageing Sunny Mini Central 9000TL 10000TL 11000TL Sunny Mini Central 9000TL 10000TL 11000TL with Reactive Power Control When the red LED lights up continuously the inverter has detected a ground fault A separate blink code indicates a defective varistor or string fuse see Section 3 4 2 The Red LED is blinking page 17 Inverter equipped with integrated grounding set If the inverter is equipped with a grounding set a continuously lit red LED signals an unwanted ground fault in the PV generator or a defect in the grounding set itself Further information on this subject can be found in the installation guide of the grounding set Correction of error by installer Contact your installer to have the error corrected Instructions on correction errors can be found in the inverter installation guide SB_SMC BENO92840 User M
48. yellow LED Blink code The yellow fault LED lights up for 5 seconds when the fault occurs and then starts emitting the following blink code 3 seconds off and then 4 brief consecutive blinks This code is emitted 3 times in succession If this fault is still present the fault signal starts over again NOTICE A N DC input voltage too high Destruction of the inverter Contact your installer who will immediately disconnect the PV generator from the inverter and check the DC voltage as described in the inverter s installation guide Generator Failure e 1 The same blink code is generated when a generator failure occurs This falls into the category of a non critical failure which is dealt with in more detail in Section 3 4 6 The yellow LED blinks 4 times page 20 Non Critical Failure Conditions All other display codes indicate some form of fault condition which is not usually dangerous to people or equipment but which should nevertheless be investigated and corrected without delay Despite all precautions it is possible that other faults may occur which cannot be signaled e g failure of the status display In order to detect such faults the system operator should use the explanations in the following section to check the plausibility ofthe displayed mode e g an illuminated green LED in the dead of night indicates a defect just as does a non illuminated LED on a sunny da
49. zation The inverter s on board computer is now in the initializing phase The on board power supply is present but there is insufficient energy for feeding the grid Data transmission is also not possible yet A All LEDs are blinking 1 If during the initialization phase the energy fed into the inverter is not sufficient to power the on board computer all LEDs are extinguished After this initialization restarts If there is very weak solar irradiation the LEDs appear to blink This apparent blinking indicates a normal operating mode No fault has occurred in the system 3 3 Normal Operation If no LED or only the green LED is on or blinking the inverter is operating normally If all 3 LEDs are lit up simultaneously this is also an indication of normal operation initialization All other signals are a sign of faulty operation 3 3 1 All LEDs are off Overnight Shutdown The inverter is in the so called overnight shutdown mode This situation occurs if the inverter s input voltage is too low both for feeding into the grid and for satisfying the on board voltage requirements If this operating mode occurs during a sunny day with good irradiation have the PV voltage checked by your installer 12 SB_SMC BEN092840 User Manual SMA Solar Technology AG Operating Modes 3 3 2 The green LED is continuously on Feeding Operation The inverter has passed the selftests of the measurement electronics and grid monitoring

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