Service Manual SUNNY BOY 3000TL / 3600TL / 4000TL / 5000TL / 6000TL SB30-60TL-21-SG-en-11 | Version 1.
Legal Provisions SMA Solar Technology AG Legal Provisions The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval. SMA Warranty You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
SMA Solar Technology AG Table of Contents Table of Contents 1 2 Information on this Document ................................................. 4 1.1 1.2 1.3 1.4 Validity ................................................................................................ Target Group...................................................................................... Symbols .............................................................................................. Nomenclature........................
1 Information on this Document 1 SMA Solar Technology AG Information on this Document 1.1 Validity This document describes how to rectify certain errors and how to replace defective components. This document supplements the documents that are enclosed with each product and does not replace any locally applicable standards or directives. Read and observe all documents supplied with the product.
1 Information on this Document SMA Solar Technology AG Symbol Explanation Desired result A problem that might occur 1.
2 Safety 2 2.1 SMA Solar Technology AG Safety Safety Information This section contains safety information that must be observed at all times when working on or with the product. To prevent personal injury and property damage and to ensure long-term operation of the product, read this section carefully and observe all safety information at all times.
2 Safety SMA Solar Technology AG 2.2 Disconnecting the Inverter from Voltage Sources Prior to performing any work on the inverter, always disconnect it from all voltage sources as described in this section. Always adhere to the prescribed sequence. Destruction of the measuring device due to overvoltage • Only use measuring devices with a DC input voltage range of 1,000 V or higher. Procedure: 1. Disconnect the circuit breaker and secure it against reconnection. 2.
2 Safety SMA Solar Technology AG 13. Damage to the inverter due to electrostatic discharge The internal components of the inverter can be irreparably damaged by electrostatic discharge. • Ground yourself before touching any component.
SMA Solar Technology AG 3 3 Cleaning the Inverter Cleaning the Inverter Damage to the display or the type label due to the use of cleaning agents • If the inverter is dirty, clean the enclosure, the enclosure lid, the type label, the display and the LEDs with a damp cloth only. • If the cooling fins on the rear of the enclosure are dirty, clean them using a soft brush. • If the air ducts on the top of the inverter are dirty, clean them using a soft brush.
4 Troubleshooting 4 SMA Solar Technology AG Troubleshooting 4.1 LED Signals The LEDs indicate the operating state of the inverter. LED Status Explanation Green LED glowing Feed-in operation If an event occurs during feed-in operation, an event message will be shown on the display (for event messages see the service manual at www.SMA-Solar.com). flashing The conditions for feed-in operation are not yet met. As soon as the conditions are met, the inverter will start feedin operation.
4 Troubleshooting SMA Solar Technology AG Display message Cause Upd. language table The inverter is updating the corresponding component. Update completed The inverter has successfully completed the update. Grid param. unchanged The parameters are locked and you cannot change them. Inst. code valid The entered Grid Guard code is valid. Protected parameters have now been unlocked and you can adjust the parameters. The parameters will be automatically locked again after ten feed-in hours. 4.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 301 Grid fault The ten-minute average value of the grid voltage is no longer within the permissible range. The grid voltage or grid impedance at the connection point is too high. The inverter disconnects from the utility grid to maintain power quality. Corrective measures: • Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 701 Frq. not permitted > Check parameter The power frequency is not within the permissible range. The inverter has disconnected from the utility grid. Corrective measures: • If possible, check the power frequency and observe how often fluctuations occur.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 3301 to 3303 Unstable operation The ten-minute average value of the grid voltage is no longer within the permissible range. The grid voltage or grid impedance at the connection point is too high. The inverter disconnects from the utility grid to maintain power quality. Corrective measures: • Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 3501 Insulation failure > Check generator The inverter has detected a ground fault in the PV array. Corrective measures: • Check the PV system for ground faults (see Section 5, page 19). 3601 High discharge curr. > Check generator The leakage currents of the inverter and the PV array are too high. There is a ground fault, a residual current or a malfunction.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 6501 to 6502 Self-diagnosis > Overtemperature The inverter has switched off due to excessive temperature. Corrective measures: • Clean the cooling fins on the rear of the enclosure and the air ducts on the top using a soft brush. • Ensure that the inverter has sufficient ventilation. 7008 Disturbance sensor display temperature The cause must be determined by the Service.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 7201 to 7202 Data stor. not poss.. Internal error. The inverter continues to feed into the utility grid. Corrective measures: • Contact the Service (see Section 11, page 30). 7303 Update main CPU failed The cause must be determined by the Service. Corrective measures: • Contact the Service (see Section 11, page 30). 7305 Update RS485I module failed Internal error.
4 Troubleshooting SMA Solar Technology AG Event number Display message, cause and corrective measures 8001 Derating occurred The inverter has reduced its power output for more than ten minutes due to excessive temperature. Corrective measures: • Clean the cooling fins on the rear of the enclosure and the air ducts on the top using a soft brush. • Ensure that the inverter has sufficient ventilation. 8801 to 8803 No display The cause must be determined by the Service.
SMA Solar Technology AG 5 5 Checking the PV System for Ground Faults Checking the PV System for Ground Faults If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. The electrical insulation from the PV system to ground is defective or insufficient. Danger to life due to electric shock In the event of a ground fault, high voltages can be present. • Touch the cables of the PV array on the insulation only.
5 Checking the PV System for Ground Faults SMA Solar Technology AG Example: Location of the ground fault The example shows a ground fault between the second and third PV module. 3. If a definite ground fault cannot be measured and the message is still displayed, measure the insulation resistance. 4. Reconnect the strings without ground faults to the inverter and recommission the inverter (see Section 8, page 25).
SMA Solar Technology AG 5 Checking the PV System for Ground Faults Calculating the insulation resistance The expected total resistance of the PV system or of an individual string can be calculated using the following formula: total The exact insulation resistance of a PV module can be obtained from the module manufacturer or the datasheet.
6 Checking the Function of the Varistors 6 SMA Solar Technology AG Checking the Function of the Varistors Figure 2: Varistors inside the inverter Destruction of the inverter due to overvoltage If varistors are missing, the inverter is no longer protected against overvoltage. • Do not operate the inverter without varistors in PV systems with a high risk of overvoltages. • Do not recommission the inverter until the defective varistors have been replaced.
SMA Solar Technology AG 6 Checking the Function of the Varistors 5. Use a measuring device to measure whether there is a conductive connection between the middle and the left-hand varistor lead. Hold the varistor with the labeling pointing forward. If there is no conductive connection, the varistor is defective. SMA Solar Technology AG recommends replacing all varistors immediately. • Order new varistors and insertion tools fromSMA Solar Technology AG.
7 Replacing the Varistors 7 SMA Solar Technology AG Replacing the Varistors Proceed as follows to replace each varistor. Procedure: 1. Danger to life due to high voltages • Disconnect the inverter from all voltage sources (see Section 2.2, page 7). 2. Loosen the screws on the upper enclosure lid using an Allen key (AF 4) and remove the enclosure lid. 3. Position the insertion tool into the clamping contacts of the connecting terminal plate. 4. Remove the varistor from the connecting terminal plate. 5.
SMA Solar Technology AG 8 8 Recommissioning the Inverter Recommissioning the Inverter If you have disconnected the inverter from all voltage sources (e.g. for configuration purposes) and want to recommission it, proceed as follows. Requirements: ☐ The circuit breaker must be correctly rated. ☐ The inverter must be correctly mounted. Procedure: 1. Connect the DC connectors to the inverter. ☑ The DC connectors snap into place. 2. Seal all unused DC inputs using the DC connectors with sealing plugs. 3.
8 Recommissioning the Inverter SMA Solar Technology AG • Check the metal mounting tabs inside the ESS for discoloration or damage. If the metal mounting tabs show brown discoloration or are damaged, order a new ESS from SMA Solar Technology AG and have the ESS replaced. If the metal mounting tabs show no brown discoloration or damage, the ESS is not worn and can still be used. 7. If an ESS is used, the ESS has to be plugged in firmly. The ESS must be aligned parallel to and flush with the enclosure. 8.
SMA Solar Technology AG 9 9 Decommissioning the Inverter Decommissioning the Inverter Risk of injury when lifting the inverter, or if it is dropped The inverter weighs 30 kg. There is risk of injury if the inverter is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket. • Transport and lift the inverter carefully. Procedure: 1. Danger to life due to high voltages • Disconnect the inverter from all voltage sources (see Section 2.
9 Decommissioning the Inverter SMA Solar Technology AG 10. If the inverter is protected against theft, open the padlock and remove it. 11. Remove the inverter by lifting it vertically up and off the wall mounting bracket. 12. If the inverter is to be stored or shipped in packaging, pack the inverter and, if applicable, the ESS. Use the original packaging or packaging that is suitable for the weight and dimensions of the inverter. 13.
10 Spare Parts SMA Solar Technology AG 10 Spare Parts You will find the spare parts for your product in the following overview. If required, these can be ordered from SMA Solar Technology AG or your distributor. Designation Brief description SMA order number Electronic Solar Switch ESS as spare part ESS-HANDLE* Replacement varistors Set with four thermally-monitored varistors incl.
11 Contact SMA Solar Technology AG 11 Contact If you have technical problems with our products, contact the SMA Service Line. We need the following information in order to provide you with the necessary assistance: • Inverter device type • Inverter serial number • Inverter firmware version • Special country-specific settings of the inverter (if applicable) • Type and quantity of PV modules connected • Mounting location and altitude of the inverter • Inverter message • Optional equipment, e.g.
11 Contact SMA Solar Technology AG France SMA France S.A.S. Lyon Medium Power Solutions Onduleurs : +33 472 09 04 40 Communication : +33 472 09 04 41 Hybrid Energy Solutions Sunny Island : +33 472 09 04 42 Power Plant Solutions Sunny Central : +33 472 09 04 43 India SMA Solar India Pvt. Ltd. Mumbai +91 22 61713888 Italia SMA Italia S.r.l. Milano +39 02 8934-7299 Κύπρος/Kıbrıs Βλέπε Ελλάδα/ Bkz.
끭 鲵뼑ꖱ霢 11 Contact 끭 SMA Solar Technology AG Ё SMA Solar (Thailand) Co., Ltd. ࣫Ҁ ࣫Ҁ 대한민국 SMA Technology Korea Co., Ltd.
SMA Solar Technology www.SMA-Solar.
