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SUNNY MINI CENTRAL 7000HV - Installation Manual

1. 22 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection Position Description A Connection area and slots for communication B Display Jumper slot the fan test D LEDs for displaying the operating states E Jumper slot for SMA Power Balancer F Connections terminals for SMA Power Balancer G Flat connector for grounding the cable shield when connecting the SMA Power Balancer Additional connection terminal for grounding Cable glands for the SMA Power Balancer Connection terminals for moins cable Cable gland for grid cable AC Cable glands for communication Screwing device for shield clamp for communication cable DC plug connector Connection socket for Electronic Solar Switch ESS olvioilzixir i rz Varistors Installation Manual SMC7OHV1 1 IA IEN1 12970 23 Electrical Connection SMA Solar Technology AG 5 2 Connection to the Power Distribution Grid AC 5 2 1 Conditions for the
2. Do not use compressed air to clean the fan This can damage the fan 10 After cleaning reassemble everything in reverse order M The fans are cleaned 11 Checkthe functioning of the fans as described in the following section 62 SMC70HV11 IA EN112970 Installation Manual SMA Solar Technology AG Maintenance and Cleaning 8 2 2 Checking the Fans You can check that the fans are working in 2 ways Set the Fan Test parameter to 1 in the installer mode with a communication product Plug the provided jumper into the sequential control system board Setting Parameters 1 Request the installer password from the SMA Serviceline contact see 85 2 Set the Fan Test parameter to 1 in the installer mode 3 Check the fans air flow The inverter takes cooling air in from underneath and then blows it back out on the upper sides Listen for any unusual noise which could indicate incorrect installation or that the fans are faulty 4 After checking the fans set the Fan Test parameter back to M The test of the fans has been completed Plugging the Jumper The inverter recognizes the jumper only after the system has been restarted i e all LEDs must have gone out before a restart 1 2 Open the inverter as described in section 7 2 Opening the Inverter page 56 Plug the provided jumper in the slot on the sequential control system board as shown below
3. 4 og 58 3 mm J 134 0 mm 134 0 mm v 583 mm lt gt lt gt 25 0 mm 25 0 mm 18 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Mounting CAUTION Risk of injury due to the heavy weight of the inverter The inverter weights 65 kg Attach the wall mounting bracket with the corresponding mounting material depending on the surface Use the side handles above and below or a steel rod maximum diameter of 30 mm for transport and mounting The rod must be pushed through the enclosure openings 2 Secure the wall mounting bracket to the wall using appropriate screws and washers M s s of Ss gt gt i 3 Hang the inverter onto the wall mounting bracket using the opening for this purpose in the rear of the enclosure Installation Manual SMC7OHV1 1 IA IEN1 12970 19 Mounting SMA Solar Technology AG 4 Screw the inverter onto the wall mounting bracket on both sides using the screws M6x8 provided For this purpose only tighten the screws by hand 5 Make sure that the inverter is securely seated 6 Close the recessed grips with the fan grills provided To help you identify the sides the ventilation grids are marked rechts right and links left on the inside The ventilation grids prevent dirt and insects from entering the device and if necessary can be reordered from SMA Solar Technology AG see section 13
4. 78 Packing the Inverter 79 5 79 Disposing of the 1 79 Technical Data 80 ACCOSSOTIGS riva Y e AUS sasa ATE COE Rand 84 Contact aed AAN 85 Installation Manual SMC7OHV1 1 IA IEN1 12970 5 Table of Contents SMA Solar Technology AG SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Informotion on this Manuol 1 Information on this Manual 1 1 Validity This manual describes the mounting installation commissioning maintenance and troubleshooting procedures for the following SMA inverters Sunny Mini Central Z000HV SMC 7000HV 11 Keep this manual in a convenient place for future reference 1 2 Target Group This is for electrically skilled persons The tasks described in this manual may only performed by electrically skilled persons 1 3 Additional Information You will find further information on special topics such as designing a miniature circuitbreaker or the description of the operating parameters at www SMA de en Refer to the user manual provided for detailed information on operating the inverter Installation Manual SMC7OHV11 IA IEN1 12970 7 Information on this Manual SMA Solar Technology AG 1 4 Symbols Used The following types of safety precautions and general information appear in this docume
5. PV inverter SUNNY MINI CENTRAL 7000HV Installation Manual SMC7OHV1 1 IAJENT12970 IMESMC7OHV Version 7 0 Cn 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 2 3 1 2 3 2 3 1 3 2 4 1 4 2 4 3 5 1 5 1 1 5 1 2 5 2 5 2 1 5 2 2 5 2 3 Information on this Monual 7 A PPP apanan qupunku ua q 7 Target Group eee a ee sees bees 7 Additional Information 7 Symbols seca sa Ui AOA es S Please 8 SOC A ASS 9 Intended Use 9 a A 10 Explanation of Symbols 11 Symbols on the Inverter eteris ln ed to 11 Symbols on th cocinar rr pais 12 Unpacking AE 14 Scope of Delivery na keke p dd a aad 14 Identifying the 15 MOUNTING fms due One VADER RUN AURA 16 A aS Voss dta vd Go EOS VAR 16 Selecting the Mounting 16 Mounting the Inverter with the Wall Mounting Bracket 18 Electrical Connection 21 Overview of the Connection Area 21 Exteti r View A o N 21 Interior epe AA bet 1 22 Connection to the Power Distribution Grid 24 Conditions for the AC Connection 24 Connecting the Inv
6. 00000000000000 Close the inverter as described in section 7 3 Closing the Inverter page 59 Check the fans air flow The inverter takes cooling air in from underneath and then blows it back out on the upper sides Listen for any unusual noise which could indicate incorrect installation or that the fans are faulty After checking the fans remove the jumper Open and close the inverter as described in section 7 Opening and Closing page 56 The test of the fans has been completed Installation Manual SMC7OHV1 1 IA IEN1 12970 63 Maintenance and Cleaning SMA Solar Technology AG 8 2 3 Cleaning the Ventilation Grids The inverter takes cooling air in from underneath via the fan and blows it out again through the ventilation grids on the upper sides Clean the ventilation grids if they are dirty Procedure 1 Remove the ventilation grids Insert your finger above in the space between the ventilation grid and the enclosure and remove the ventilation grid to the side 2 Clean the ventilation grids with a soft brush a paint brush or compressed air 3 Reattach the ventilation grids to the inverter The ventilation grids must be attached according to the inside inscription links left and rechts right N N NOTICE N The inverter can be damaged if insects enter The ventilation grids must not be
7. Contact page 85 Optional Theft Protection 1 To protect the inverter against theft the rear panel can be secured to the wall at the bottom using 2 single use bolts The other two holes are spares 20 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection 5 Electrical Connection NOTICE N Electrostatic discharges can damage the inverter Internal component parts of the inverter can irreparably damaged static dischorge Ground yourself before touching a component 5 1 Overview of the Connection Area 5 1 1 Exterior View The following figure shows the assignment of the individual connection areas on the bottom of the inverter A 7 N z N A Position Description A DC connectors for connecting the strings Socket for connecting the Electronic Solar Switch ESS Cable glands for optional communication via R 485 or radio PG 16 Cable gland for grid connection 12 mm 25 miolajw Cable glands for SMA Power Balancer Installation Manual SMC7OHV1 14 1 12970 21 Electrical Connec tion SMA Solar Technology AG 5 1 2 Interior view The following figure shows the various components and connection areas of the open inverter
8. Ensure the connectors have the correct polarity The DC plug connectors have the symbols and Cable requirements 2 5 mm D5 8mm Use a PV1 F cable i 12 mm Procedure 1 Lead the stripped cable all the way into the DC connector 2 Press the clamping clip down The clamping clip snaps audibly into place 3 Ensure the cable is correctly in place Result Measure M Ifthe stranded wire is visible in the chamber Proceed to step 4 of the clamping clip the cable is correctly positioned Installation Manual SMC7OHV11 IA IEN1 12970 31 Electrical Connection SMA Solar Technology AG Result If the stranded wires are not visible the coble is not correctly positioned Measure Loosen the clamping clip To do so insert a 3 5 mm screwdriver into the terminal clamp and lever it out Remove the cable and go back to step 1 4 Push the cable gland towards the thread and tighten it torque 2 Nm Z The DC connectors are now assembled and can be connected to the inverters as described in section 5 4 4 Connecting the PV Array DC page 34 32 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG 5 4 3 Opening the DC Connector 1 Unscrew the screw connection 2 Unlocking the DC connector Insert a 3 5 mm screwdriver into the snap slot on the side and lever it out 3 Carefully pull the DC connector a
9. The AC cable is correctly connected power distribution grid All DC cables connected strings Unused DC inputs are closed using the corresponding DC connectors and sealing plugs The enclosure lid is securely screwed in place The Electronic Solar Switch is securely plugged The miniature circuit breaker is correctly laid out 2 Switch on the miniature circuit breaker M All 3 LEDs are glowing or blinking The startup phase is starting Green LED glows commissioning has been successful or M Green LED flashes in case of insufficient irradiation grid connection conditions have not yet or been reached Wait for sufficient irradiation M The red or yellow LED is glowing or flashing a disturbance has occurred Proceed to step 3 Green LED Operation Red LED Ground fault or varistor defective O Yellow LED Foult i J Self test in accordance with DK 5940 Ed 2 2 for initial commissioning applies to Italy only The Italian DK 5940 standard prescribes that an inverter can only operate on the power distribution grid after the disconnection times for overvoltage undervoltage minimum frequency and maximum frequency have been checked Start the self test as described in section 6 3 Self Test in Accordance with DK 5940 Ed 2 2 Applies to Italy Only page 51 The test takes approx 8 minutes 3 Read section 9 Troubleshooting page 66 and if necessary eliminate the fault or distur
10. 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 AG 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 O 2004 to 2011 SMA Solar Technology AG All rights reserved Installation Manual SMC7OHV1 1 IA IEN1 12970 87 SMA Solar Technology SMA Solar Technology AG www SMA de SMA America LLC www SMA America com SMA Technology Australia Pty Ltd www SMA Australia com au SMA Benelux SPRL www SMA Benelux com SMA Beijing Commercial Co Ltd www SMA China com SMA Czech Republic s r o www SMA Czech com SMA France S A S www SMA France com SMA Hellas AE www SMA Hellas com SMA Ib rica Tecnolog a Solar S L www SMA lberica com SMA Italia S r l www SMA ltalia com SMA Technology Korea Co Ltd www SMA Korea com
11. miniature circuit breaker the protective function of the miniature circuit breaker is no longer guaranteed It can result in a cable fire or destruction of the inverter Never connect several inverters to a single miniature circuit breaker Observe the maximum permissible fuse protection of the inverter when selecting the miniature circuit breaker DANGER A Danger to life due to fire When a generator inverter and a load are connected to the same miniature circuit breaker the protective function of the miniature circuitbreaker is no longer guaranteed The currents from the inverter and the grid can accumulate to over currents that are not detected by the miniature circuit breaker Never connect loads between the inverter and the miniature circuit breaker without protection Always protect consumers separately NOTICE o N Damage to the inverter by using screw type fuses as a load disconnection unit A screw type fuse e g DIAZED fuse or DO system Neozed is not a load disconnection device and thus may not be used as a load disconnection unit A screw type fuse only acts as cable protection When disconnecting under load using a screw type fuse the inverter can be damaged Use only a switch disconnector or a miniature circuit breaker as a load disconnection unit Installation Manual SMC7OHV1 1 IAIEN112970 25 Electrical Connection SMA Solar
12. permissible fuse protection 50A Ground fault monitoring Insulation monitoring Rh gt 1 Galvanic isolation Available General Data Width x Height x Depth with Electronic Solar Switch 468 mm x 653 mm x 242 mm Weight 65 kg Length x width x height of packaging 396 mm x 803 mm x 596 mm Transport weight 68 kg Climatic category according to IEC 60721 2 1 Operation temperature range 25 C 60 C Maximum permissible value for relative humidity 100 non condensing Maximum operating altitude above mean sea 2 000 m level Noise emission typical lt 41 dB A Power loss in night operation 0 25 W Topology LF transformer Cooling concept OptiCool temperature controlled fan Fan connection designed for safe disconnection in accordance with DIN EN 50178 1998 04 Degree of protection for electrics according to IEC 60529 IP65 Protection class according to IEC 62103 Installation Manual SMC7OHV11 IA IEN1 12970 81 Technical Data SMA Solar Technology AG Country standards as of07 2011 VDE 0126 1 1 VDE AR N 4105 54777 C10 11 PPDS GBT19939 2005 GF001 2009 UTE C15 712 1 PPC DK 5940 EN 50438 RD 1663 2000 RD 661 2007 IEC 61727 PEA G83 1 1 59 2 50438 Does not apply to all national standard deviations VDE AR N 4105 HP Valid from firmware version 2 10 Setting in accordance with VDE AR N 4
13. startup phase again see section 6 2 Display Messages During the Startup Phase page 50 DC load disconnection unit Electronic Solar Switch ESS When the Electronic Solar Switch is plugged in the DC circuit is closed To interrupt the DC circuit and disconnect the inverter securely under load you have to first pull out the Electronic Solar Switch and then remove all DC connectors as described in section 7 2 Opening the Inverter page 56 GR Code for SMA bonus program You will find information on the SMA bonus program at www SMA Bonus com This function is valid from firmware version 2 10 QR Code is a registered trademark of DENSO WAVE INCORPORATED Installation Manual SMC7OHV1 1 IA IEN1 12970 11 Security SMA Solar Technology AG 2 3 2 Symbols on the Type Label Symbol Explanation Beware of dangerous electrical voltage The inverter operates at high voltages All work on the inverter may only be carried out by electrically skilled persons A AN Beware of hot surface The inverter can become hot during operation Avoid contact during operation Observe all documentation that accompanies the inverter The inverter must not be disposed of together with the household waste For more information on disposal see section 10 4 Disposing of the Inverter page 79 CE mark The inverter complies with the requirements of the applicable
14. the Functioning SMA Solar Technology AG To test whether the SMA Power Balancer operates correctly proceed as follows 1 2 a 46 Select the PhaseGuard setting of the PowerBalancer parameter for all three inverters Check whether all inverters in the group are feeding the power distribution grid normally Green LED glows continually or adjacent display message Proceed to step 3 or If all inverters in this group show the display message pictured on the right Check the installation of the SMA Power Balancer and contact the SMA Serviceline if necessary Switch off the miniature circuit breaker for one of the three inverters The inverter with a deactivated miniature circuit breaker then indicates a grid voltage fault with the adjacent display message Bfr and Srr are irrelevant The other two inverters then also disconnect themselves from the power distribution grid with the display message shown opposite Both inverters subsequently switch to Balanced mode V If the inverters react as described above the functionality test has been completed successfully Otherwise check the configuration E Ladau Mode Balance If applicable reset the PowerBalancer parameter to the desired setting in all inverters Switch on the miniature circuitbreaker again The functionality test has been completed SMC7OHV11 IA IEN112970 Installation Manual SMA Solar T
15. touch the enclosure lid of the inverter during operation Environmental Influences When closed and with the Electronic Solar Switch attached the inverter complies with the IP65 degree of protection The inverter is thus protected against the penetration of dust and water The penetration of dust and water can damage the inverter If the Electronic Solar Switch is not attached the inverter must be protected against dust and water Securely attach the Electronic Solar Switch again after any work on the inverter Electrostatic discharge Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge Ground yourself before touching any component parts 10 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Security 2 3 Explanation of Symbols This section gives an explanation of all the symbols found on the inverter and on the type label 2 3 1 Symbols on the Inverter Symbol Explanation Operation display Indicates the operating state of the inverter h Ground fault or varistor defective Read section 9 3 Red LED is Glowing Continuously page 73 BA Fault or disturbance Read section 9 Troubleshooting page 66 D You can operate the display by tapping x A Tapping once the background light switches on or the display scrolls one message further 2 taps in quick succession The inverter shows the display messages from the
16. 105 Germany for PV plants gt 13 8 kVA Climatic conditions in accordance with IEC 60721 3 4 installation type C class 4K4H Extended temperature range 25 C 60 C Extended humidity range 0 100 Extended air pressure range 79 5 kPa 106 kPa Climatic conditions in accordance with IEC 6072 1 3 4 transport type E class 2K3 Temperature range 25 C 70 C Features DC connection SUNCLIX DC connector AC connection Spring terminal Display LC text display Bluetooth Wireless Technology optional RS485 galvanically isolated optional 82 SMC70HV1 1 IA IEN1 12970 Installation Manual SMA Solar Technology AG Technical Data Electronic Solar Switch Electrical endurance in the event of a short circuit Min 50 switching processes with a nominal current of 35 A Maximum switching current 35A Maximum switching voltage 800 V Maximum PV power 12 kw Degree of protection when plugged IP 5 Degree of protection when unplugged 1P21 Torque Enclosure lid screws 6 0 Nm Additional ground terminal 6 0 Nm Cylinder head screw for attaching the enclosure 6 0 Nm to the wall mounting bracket SUNCLIX lock nut 2 0 Nm Screw terminal AC connection 2 5 Nm RS485 communication connection 1 5 Nm Connection of the SMA Power Balancer 1 5 Nm Grid forms IT grid Suitable TN C grid Suitable TN S grid S
17. 70HV1 1 IA IEN1 12970 Installation Manual SMA Solar Technology AG Decommissioning 7 Remove the inverter upwords from the wall mounting bracket 8 Use the side handles above and below or a steel rod maximum diameter 30 mm to transport the inverter The rod must be pushed through the enclosure openings The inverter is disassembled 10 2 Packing the Inverter If possible always pack the inverter in its original packaging If it is no longer available you can also use an equivalent carton The carton must be completely closeable have a handle system and be made to support both the weight and size of the inverter 10 3 Storing the Inverter Store the inverter in a dry place where ambient temperatures are always between 25 C and 60 C 10 4 Disposing of the Inverter Dispose of the inverter at the end of its service life in accordance with the locally applicable disposal regulations for electronic waste Alternatively send it back to SMA Solar Technology AG with shipping paid by sender and labeled ZUR ENTSORGUNG FOR DISPOSAL contact see page 85 Installation Manual SMC7OHV11 IA IEN1 12970 79 Technicol Doto 11 Technical Data SMA Solar Technology AG DC Input Maximum DC power at cos 1 7 500 W Maximum input voltage 800 V MPP voltage range 335 V 560 V Rated input voltage 340 V Minimum input volt
18. AC Connection e Connection requirements of the distribution grid operator Always observe the connection requirements of your distribution grid operator Cable design Use Sunny Design version 2 0 or higher for the dimensioning of the conductor cross sectional areas see Sunny Design design program at www SMA de en e Cutline losses in half 1 If three inverters with symmetrical feeding are combined to form a three phase system the neutral conductor is not subjected to any load and the line losses are halved Thus the maximum possible cable length is doubled Cable Requirements Position Description Value A External diameter 12 25 mm B Conductor cross section 10 mm 16 mm2 Length of insulation to be stripped off approx 16 mm 24 SMC70HV11 IA EN112970 Installation Manual SMA Solar Technology AG Electrical Connection Load Disconnection Unit You must install a separate line circuit breaker for each inverter in order to ensure that the inverter can be securely disconnected under load The maximum permissible rating can be found in section 11 Technical Data page 80 Detailed information and examples for the rating of a miniature circuit breaker can be found in the Technical Information Line Circuit Breaker in the SMA Solar Technology AG download area at www SMA de en DANGER Danger to life due to fire When more than one inverter is connected to the same
19. EC guidelines The inverter has a transformer Direct current DC Alternating current AC Degree of protection IP65 The inverter is protected against penetration by dust particles and water jets from any angle RAL quality mark for solar products The inverter complies with the requirements of the German Institute for Quality Assurance and Labeling In compliance with Australian mark 12 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Security Explanation Chinese mark of conformity In compliance with Korean mark a Installation Manual SMC7OHV1 1 IA IEN1 12970 13 Unpacking SMA Solar Technology AG 3 Unpacking 3 1 Scope of Delivery Check the delivery for completeness and for any visible external damage Contact your dealer if anything is damaged or missing Position Quantity Description Sunny Mini Central Ventilation grids right left Wall mounting bracket DC load disconnection unit Electronic Solar Switch 55 DC plug connectors 4 x positive 4 x negative Cable gland for AC connection Counter nut for cable gland at AC connection Clamping clip for additional grounding A Z Q mimi g O m gt 1 1 1 1 8 8 Sealing plugs for DC connectors 1 1 1 2 Conical spring washers 1 x for cover screws replacement 1 x for ground termina
20. FacFast disturbances are still displayed contact the SMA Serviceline 68 SMC7OHV11 IA IEN112970 Installation Manua SMA Solar Technology AG Troubleshooting Messoge Imax overcurrent Description and corrective measure Overcurrent on the AC side This message is displayed if the current on the AC grid is larger than specified Corrective measures Check the system design and grid conditions K1 Close K1 Open Fault during relay test Corrective measures Ifthis fault frequently occurs or occurs several times consecutively contact the SMA Serviceline MSD Fac Internal measurement comparison fault or hardware defect Corrective measures If this disturbance occurs frequently contact the SMA Serviceline MSD Vac Internal measurement comparison fault or hardware defect Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline MSD Timeout Internal measurement comparison fault or hardware defect Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline MSD Zac Internal measurement comparison fault or hardware defect Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline Offset The Offset operating state is a normal operating condition that occurs prior to grid monitoring If Offset is displayed as a fault th
21. Technology AG 5 2 2 Connecting the Inverter to the Power Distribution Grid AC 1 2 Check the grid voltage and compare with Vac nom on the type plate The exact operating range of the inverter is specified in the operation parameters The corresponding document can be found in the download area at www SMA de en in the Technical Description category of the respective inverter Disconnect the miniature circuitbreaker and secure against re connection Remove all lid screws and detach the enclosure lid Remove the adhesive tape from the AC cable gland see D on Page 21 Insert the AC cable gland from the outside into the enclosure opening and tighten it from the inside with the counter nut Unscrew the cable gland s lock nut and pass it over the cable Route the cable through the cable gland to the AC terminal Connect L N and the protective conductor PE to the connecting terminal plate using a screwdriver in accordance with the label To do this the protective conductor must be 5 mm longer than the L and N wires L and N must not be swapped SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection 9 Tighten the lock nut firmly to the cable gland 10 Close the cable gland tightly on the enclosure opening 11 Tighten the enclosure lid with all screws and the corresponding conical spring washers in the sequence depicted on
22. age 290 V Start input voltage 400 V Maximum input current 23A Maximum input current per string 23A Number of independent MPP inputs 1 Strings per MPP input 4 The maximum open circuit voltage which can occur at a cell temperature of 10 C must not exceed the maximum input voltage AC output Rated power at 230 V 50 Hz 6 650W Maximum apparent AC power 7 000 VA Rated grid voltage 230 V Nominal AC voltage 220V 230V 240V AC voltage range 180 V 265 V AC nominal current at 220 V 30 2A AC nominal current at 230 V 28 9 A AC nominal current at 240 V 277A Maximum output current 31A Total harmonic factor of output current at lt 3 AC THF lt 2 AC power gt 0 5 rated power Rated power frequency 50 Hz AC power frequency 50 Hz 60 Hz Operating range at AC power frequency 50 Hz 44 Hz 55 Hz Operating range at AC power frequency 60 Hz 54 Hz 65 Hz Displacement power factor adjustable 0 8 verexcitad i 08 gnderexcited Feed in phases 1 Connection phases 1 Overvoltage category as per IEC 60644 1 80 SMC70HV1 1 IA IEN1 12970 Installation Manual SMA Solar Technology AG Protective devices Technicol Doto DC reverse polarity protection Short circuit diode Inputside disconnection device Electronic Solar Switch DC overvoltage protection thermally monitored varistors AC short circuit current capability Current control Grid Monitoring SMA Grid Guard 2 1 Maximum
23. bance Installation Manual SMC7OHV1 1 IA IEN1 12970 49 Commissioning SMA Solar Technology AG 6 2 Display Messages During the Startup Phase After commissioning the inverter displays the device Zunns Mini Central type in the startup phase Mi sex After 5 seconds or when you tap again on the enclosure lid the firmware version of the internal processors is displayed by the inverter BFF erzion xxx SER Uerzion x After a further 5 seconds or when you tap again the configured country standard is displayed by the inverter example GER VDE 0126 1 1 GER UDEB126 1 1 Show display messages again valid from firmware version 2 10 1 If you want to view the display messages of the startup phase again while in normal 50 operation double tap the enclosure lid SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Commissioning 6 3 Self Test in Accordance with DK 5940 Ed 2 2 Applies to Italy Only 6 3 1 Starting the Self Test by Tapping You can start testing the disconnection times by tapping on the enclosure cover prerequisite here is that the country configuration of the inverter has been set to Italy IT DK5940 or trimmed Proceed as follows for checking the disconnection times 1 Connect the PV array with the inverter see section 5 4 Connecting the PV Array DC page 30 The inverter can only initialize if the PV array produces enough power lt is therefore not po
24. d in system Each of the 3 Sunny Mini Central devices in a group must be connected to a different phase conductor of the low voltage grid L1 L2 and L3 By activating this circuit you can stipulate how the other two Sunny Mini Centrals are to react if there is a device disturbance with the third Sunny Mini Central or there is a grid voltage fault in its phase e Three phase grid connection 1 For further informotion on this subject see the Technicol Informotion Three phase connection with Sunny Mini Central in the download area at www SMA de en The connections for the SMA Power Balancer are galvanically isolated from the rest of the Sunny Mini Central circuit 5 5 1 Configuration The SMA Power Balancer is deactivated at the factory using the PowerBalancer parameter parameter setting and can only be activated and configured using a communication product To change the PowerBalancer parameter you need a personal access code the so called SMA Grid Guard Code The application form for the personal access code is available in the download area at www SMA de en in the Certificate category of the respective inverter The configuration options are described below 38 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection Configuration Options There are 4 different configuration options for the PowerBalancer parameter Local connection requirements 1 Select
25. described here The deactivation criteria voltage frequency impedance are specified via country parameters as with all Sunny Mini Central inverters The Sunny Mini Central inverters of type SMC 7000HV 11 have an additional default country parameter MVtgDirective This expands the deactivation limits of the inverter for voltage and frequency to a maximum minimum This country setting may only be selected if the PV plant or inverter is operated with external three phase decoupling protection which will automatically disconnect the Sunny Mini Central from the power distribution grid if non permissible voltage and frequency values occur Device protection is still guaranteed DANGER Risk of lethal electric shock if external decoupling protection is missing If the country setting is MVtgDirective the Sunny Mini Central of type SMC 7000HV 11 may only be operated with an external three phase decoupling protection device which complies with the country specific requirements Without such external decoupling protection the Sunny Mini Central will not disconnect from the power distribution grid when the standard requirement is exceeded Install external three phase decoupling protection 48 SMC7OHV11 IAIEN1 12970 Installation Manual SMA Solar Technology AG Commissioning Commissioning 6 1 Commissioning the Inverter 1 Check the following requirements before commissioning The inverter is securely in place
26. e Display Language You can set the language of the display using the switches on the underside of the display board inside the inverter When selecting the display language different switching settings apply to inverters that are set to the Italian national standard DK 5940 You can see the standard to which the inverter was set upon delivery from the type label and the supplementary document provided with the factory settings For more information on setting the grid and national parameters see section 5 7 Setting the Grid and Country Parameters page 47 Procedure 1 Open the inverter as described in section 7 2 Opening the Inverter page 56 2 Set the switches to the required language as shown below The following switch settings except for DK 5940 apply to all national standards Language Switch 52 Switch S1 German B B English B A French A B Spanish A A The following switch settings apply to inverters that are set to the Italian national standard DK 5940 Language Switch S2 Switch S1 Italian B A English A A German B B French A B 3 Close the inverter as described in section 7 3 Closing the Inverter page 59 M The display language is set Installation Manual SMC7OHV1 1 IA IEN1 12970 29 Electrical Connection SMA Solar Technology AG 5 4 Connecting the PV Array DC 5 4 1 Conditions for the DC Connec
27. e parts Mount the inverter in such a way that it cannot be touched inadvertently CAUTION N Risk of injury due to the heavy weight of the inverter Take the inverter s weight of approx 65 kg into account for mounting 4 2 Selecting the Mounting Location Consider the following requirements when selecting the mounting location The mounting method and location must be suitable for the inverter s weight and dimensions see section 11 Technical Data page 80 Mount on a solid surface The mounting location must at all times be clear and safely accessible without the use of additional aids such as scaffolding or lifting platforms Non ulfillment of these criteria may restrict servicing Z 45 Mount vertically tilted backwards by max 45 16 SMC7OHV11 IAIEN112970 Installation Manual SMA Solar Technology AG Mounting The connection area must point downword Never mount the device with a forward tilt Never install the device with a sideways tilt Do not mount horizontally Mount at eye level to allow operating states to be read at all times The ambient temperature should be below 40 C to ensure optimum operation Do not expose the inverter to direct sunlight as this can cause excessive heating and thus power reduction In living areas do not mount the unit on plasterboard walls or similar to avoid audible vibrations Wh
28. echnology AG Electrical Connection 5 6 Communication The inverter is equipped with a slot for communication interfaces in order to communicate with special data loggers e g Sunny WebBox or a PC with corresponding software e g Sunny Explorer Refer to the respective communication interface manual for a detailed wiring schematics and an installation description for the interface The inverter s active power can be limited or its displacement power factor can be set externally using the Power Reducer Box from SMA Solar Technology AG Detailed information on the Power Reducer Box is available in its Technical Description at www SMA de en 5 7 Setting the Grid and Country Parameters Changing grid relevant parameters and country parameters 1 To change grid relevant parameters you need a personal access code the so colled SMA Grid Guard Code The application form for the personal access code is available in the download area at www SMA de en in the Certificate category of the respective inverter Ensure that you discuss the changes to these parameters with your distribution grid operator A detailed description of the operation parameters for the inverter is available in the download area at www SMA de en in the category Technical Description of the respective inverter 5 7 1 Setting the Installation Country Using the Default parameter you can set the installation country and or the grid connection standard valid f
29. ecting the PV Array DC page 34 to seal the inverter 4 Ensure that all DC plug connectors are securely in place Installation Manual SMC7OHV1 1 IAIEN112970 59 Opening and Closing SMA Solar Technology AG 5 Check the Electronic Solar Switch for wear as described in section 8 3 and attach it firmly NOTICE E N Manipulating the connector in the handle can damage the Electronic Solar Switch The connector inside the handle must remain movoble in order to ensure proper contact Tightening the screw voids all warranty claims and creates a fire risk Do not tighten the connector screw in the Electronic Solar Switch handle NOTICE E N Damoge to Electronic Solar Switch If it is not correctly connected the Electronic Solar Switch can be damaged by high voltages Plug the handle firmly onto the socket of the Electronic Solar Switch Ensure that the Electronic Solar Switch is securely seated 6 Switch on the miniature circuit breaker 7 Check whether the display field indicates a normal operating state see section 6 Commissioning page 49 M The inverter is now closed and in operation 60 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Maintenance and Cleaning 8 Maintenance and Cleaning 8 1 Cleaning the Inverter If the display field is dirty and you find it difficult to read the operating data and operating states of the inverter clean
30. en in use the inverter emits noises which may be perceived as a nuisance ina living area Observe the minimum clearances to walls other inverters or objects as shown in the diagram in order to ensure sufficient heat dissipation and sufficient space for removing the Electronic Solar Switch Multiple inverters installed in areas with high ambient temperatures 1 There must be sufficient clearance between the individual inverters to ensure that the cooling air of the adjacent inverter is not taken in If necessary increase the clearance spaces and make sure there is enough fresh air supply to ensure sufficient cooling of the inverters Installation Manual SMC7OHV1 1 IA IEN1 12970 17 Mounting SMA Solar Technology AG 4 3 Mounting the Inverter with the Wall Mounting Bracket 1 Mark the position of the drill holes using the wall mounting bracket and drill the holes Use at least 2 of the holes with one hole on the right and one on the left 217 3 mm 217 3 mm lt gt gt gt 20 11 UN 5 86 8 mm 79 2 mm 104 6mm 110 0 mm 873mm 1300mm 1300mm 873mm E E N z z o o v 2s 25 a a 5 8 92 5 5 5 5 s i o o E o 2 9 55 o oue 85 85 Ow E i O n Tole T 9 1 id WEF
31. en there is a disturbance in the data logging Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline PowerBalance The Sunny Mini Central is part of a three phase system with two further Sunny Mini Centrals equipped with the SMA Power Balancer for preventing unbalanced loads The operation parameter PowerBalancer is set to PhaseGuard or FaultGuard Corrective measures For more detailed descriptions of the operation modes PhaseGuard and FaultGuard refer to section 5 5 Connection of the SMA Power Balancer page 38 Installation Manual SMC7OHV11 IA IEN112970 69 Legal Restrictions SMA Solar Technology AG Message Riso Description and corrective measure The electrical insulation between the PV plant and ground is faulty The resistance between the DC plus and or DC minus connection and ground is outside the defined limit range Corrective measures Check the insulation of the PV plant Check the PV plant for ground faults as described in section 9 3 1 Checking the PV Array for Ground Faults page 74 ROM The inverter s firmware is faulty Corrective measures If this disturbance occurs frequently contact the SMA Serviceline Shutdown Temporary inverter disturbance Corrective measures Contact the SMA Serviceline STM Timeout Internal program run disturbance Corrective measur
32. erter to the Power Distribution Grid AC 26 Additional Grounding of the 28 Installation Manual SMC7OHV11 IA IEN1 12970 3 Table of Contents SMA Solar Technology AG 5 3 5 4 5 4 1 5 4 2 5 4 3 5 4 4 5 5 5 5 1 5 5 2 5 5 3 5 5 7 5 7 1 5 7 2 5 7 3 6 1 6 2 6 3 6 3 1 6 3 2 7 1 7 2 7 3 Setting the Display 29 Connecting the PV Array 30 Conditions for the DC Connection 30 Assembling the DC Plug 31 Opening the DC Connector 33 Connecting the PV Array DC uu lk up h unu 34 Connection of the SMA Power Balancer 38 Configuration dre butt a 38 uu Cuy ERU I di EE 42 Testing the Functioning ta tt 46 Communicator os qur 47 Setting the Grid and Country 47 Setting the Installation 47 Setting Stand alone Grid 48 Additional Country 48 Commissioning ciar a 49 Commissioning the 49 Display Messages During the Startup Phase 50 Self Test in Acc
33. es Ifthis disturbance occurs frequently contact the SMA Serviceline Trafo Temp F Temperatures in the transformer have exceeded the acceptable limit The inverter stops feeding the grid until the temperature lies within the acceptable range Corrective measures If this problem occurs frequently check the heat dissipation of the inverter as described in section 8 2 Checking Heat Dissipation page 61 Trafo Temp W If the transformer reaches an inadmissibly high temperature the inverter stops feeding the grid until the transformer has reached an admissible temperature and the plant can begin feeding the grid again The Trafo Temp W warning is displayed until the device is completely switched off Corrective measures Check the heat dissipation of the inverter as described in section 8 2 Checking Heat Dissipation page 61 70 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Troubleshooting Messoge Description and corrective measure Vac Bfr The grid voltage is no longer within the permissible range Bfr or Srr is VacSrr an internal message that has no meaning for the user This fault can be caused by any of the following conditions Power distribution grid disconnected miniature circuit breaker fuse AC cable is broken or AC cable is highly resistive The inverter disconnects itself from the public grid for
34. fault and stops feeding in the other two inverters are not affected and continue to feed in at full power KA a A X Device fault No reaction No reaction A Output O VA Output a E Output Promax 40 SMC7OHV11 IA IEN112970 Installation Manual Electrical Connection SMA Solar Technology AG Off The SMA Power Balancer is deactivated factory setting Inthe event of a device fault or grid voltage fault at an inverter only this inverter is disconnected from the power distribution grid and the other two inverters continue to run at an undiminished power level S JA DO A Grid voltage fault No reaction No reaction B Output P a E Output Pronax lo Or device fault e A Output O VA A SMC70HV1 1 IA IEN1 12970 Installation Manual Electrical Connection SMA Solar Technology AG PowerGuard This setting can be selected if the entire PV plant only consists of three Sunny Mini Central inverters and in the event of a malfunction the unbalanced load should be limited to 4 6 kVA over a 10 minute average Deviating unbalanced load limit for Italy 1 The unbalanced load for inverters set to the Italian national standard DK 5940 is limited to over a 10 minute average If one of the 3 inverters indicates a grid voltage fault or device fault and stops feeding in the other two inverters automatically limit their power to 4 6 kVA over a 10 mi
35. he one with 2 insulated conductors for each terminal insert one of the provided jumpers into the lowest of the three slots as depicted on the right Do not plug the jumpers in the bottom slot of the two other inverters or Bridge the A and B screw terminals on the middle inverter with a wire bridge Do not bridge the A and B screw terminals in the two other inverters Measure the resistance between the terminal block s positive and negative poles in the middle inverter IF the resistance is approximately 27 8 370 Q the SMA Power Balancer has been connected correctly Otherwise check the cabling Electrical Connection UI Close all inverters as described in section 7 3 Closing the Inverter page 59 i Connection with one Sunny Mini Central 9000TL 10000TL or 11000TL In order to be able to connect the SMA Power Balancer to a Sunny Mini Central 10000TL or 11000TL the Sunny Mini Central Z000HV must be equipped with a special plug Order No PBLSMC 10 NR Three inverters are then connected together with a special connection cable You can order the plug and the connection cable from SMA Solar Technology AG or your dealer Section 12 Accessories page 84 contains a list of the order numbers Installation Manual SMC7OHV1 1 IA IEN1 12970 45 Electrical Connection 5 5 3 Testing
36. hnology AG Messoge Zac Bfr Zac Srr Description and corrective measure The grid impedance has left the permissible range The suffixes Bfr und are not relevant The inverter disconnects itself from the public grid for safety reasons The impedance is calculated from both the grid impedance and the impedance of the AC cable of the inverter Corrective measures Check the grid impedance and grid connection on the inverter Use an AC cable with an adequate cross sectional area low impedance as described in section 5 2 Connection to the Power Distribution Grid AC page 24 If required retighten the screws on the AC terminals If this fault recurs contact the SMA Serviceline 72 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Troubleshooting 9 3 Red LED is Glowing Continuously If the red status display LED lights up continuously during operation there is a ground fault in the PV array or at minimum one varistor for overvoltage protection is faulty Procedure 1 Check for ground faults in the PV array as described in section 9 3 1 Checking the PV Array for Ground Faults page 74 2 If the red LED continues to glow check the varistors as described in section 9 3 2 Checking the Function of the Varistors page 76 Installation Manual SMC7OHV11 IA IEN1 12970 73 Troubleshooting SMA Solar Technology AG 9 3 1 Checking the PV Array for Ground Fault
37. in the following manner 1 Open the inverter as described in section 7 2 Opening the Inverter page 56 2 Use a multimeter to ensure that all of the varistors in Ving the installed state have a conducting connection between connectors B and C Result Measure M There is a conducting There is probably a different fault in the inverter connection Close the inverter os described section 7 3 Closing the Inverter page 59 Contact the SMA Serviceline see section 13 Contact page 85 76 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Troubleshooting Result Measure There is no conducting The respective varistor is defective and must be replaced connection Varistor failure is generally due to influences that affect all varistors similarly temperature age induced overvoltage SMA Solar Technology AG recommends that you replace both varistors The varistors are specially manufactured for use in the inverter and are not commercially available You must order replacement varistors directly from SMA Solar Technology AG see section 12 Accessories page 84 To replace the varistors proceed to step 3 NOTICE Destruction of the inverter due to overvoltage If varistors are missing the inverter is no longer protected against overvoltages Do not operate the inverter without varistors in PV plants with a high risk of o
38. ion of the inverter due to overvoltage If the voltage of the PV modules exceeds the maximum input voltage of the inverter it can be destroyed by overvoltage This will void all warranty claims Do not connect strings with an open circuit voltage greater than the maximum input voltage of the inverter Check the plant design 4 Check the strings for ground faults as described in section 9 3 1 Checking the PV Array for Ground Faults page 74 5 Check the assembled DC plug connectors for correct polarity and connect them to the inverter The DC connectors click audibly into position To unlock the DC connectors see section 7 2 Opening the Inverter page 56 6 n order to seal the inverter all the DC inputs that are not required have to be closed with DC plug connectors and sealing plugs P Sealing plugs 1 Do not insert the sealing plugs directly into the DC inputs of the inverter g plug y p For unused DC connectors push down the terminal clamp and push it onto the cable gland Installation Manual SMC70HV1 1 IA IEN1 12970 35 Electrical Connection SMA Solar Technology AG Insert the sealing plug into the DC connector Tighten the DC plug connector torque 2 Nm Insert the DC connectors with sealing plugs into the corresponding DC inputs on the inverter M The DC connectors click audibly into position 7 Ens
39. l L 2 Cylinder head screws M x 16 1 x for enclosure lid replacement 1 x for ground terminal M 2 Jumper 1 x for fan test 1 x for the SMA Power Balancer wiring N 2 Cylinder head screws x 8 for securing the inverter to the wall mounting bracket 1 Silicone tube for insuloting SMA Power Bolancer connection coble P 1 Installation manual 14 SMC7OHV11 IA IEN112970 Installation Manua SMA Solar Technology AG Unpacking Position Quantity Description Q 1 User manual R 1 Set of documents with explanations and certificates S 1 Supplementary sheet with inverter factory settings 3 2 Identifying the Inverter You can identify the inverter using the type label The type label is on the righthand side of the enclosure The serial number Serial No and the type Type Model of the inverter as well as device specific characteristics are specified on the type label SMC7OHV1 1 IA IEN1 12970 15 Installation Manual Mounting SMA Solar Technology AG 4 Mounting 4 1 Security DANGER Danger to life due to fire or explosion Despite careful construction electrical devices can cause fires Do not mount the inverter on flammable construction materials Do not mount the inverter in areas where highly flammable materials are stored Do not mount the inverter in areas with a risk of explosion CAUTION Danger of burn injuries due to hot enclosur
40. n SMA Solar Technology AG Procedure 1 Open the inverter as described in section 7 2 Opening the Inverter page 56 2 Insert the cable into each inverter Use one of the two cable glands F on the bottom right hand side DANGER Danger to life through high voltage if there is a fault with the SMA Power Balancer cable Sheath the positive and negative cable conductors in each inverter using the enclosed silicone tube Cut the silicone tube to the required length The silicone tube must completely cover the cable inside the inverter enclosure Draw the cable along the cable route E as far as the terminal block Ground the shield in each inverter at the PE terminal D Sheath the positive and negative cable conductors in each inverter with wire sleeves Connect positive and negative pole to corresponding screw terminals pun 7 n order to connect the three inverters together connect the positive and negative conductors from the two other inverters to the terminal block of the middle inverter Inverter 1 Inverter 2 Inverter 3 Twisted cable Twisted cable max 300 m max 300 m The cable length between two inverters may not exceed 300 m 44 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Only in the middle inverter t
41. n grid Once the inverter has disconnected from the power distribution grid the display successively shows the following values one after the other Disconnection value Malore di solia Corie 233 SS Calibration value TSE nni Reaction time intervento Current grid voltage Tensione di Hal ef t Installation Manual SMC7OHV1 1 IA IEN1 12970 53 Commissioning SMA Solar Technology AG Maximum frequency In a third step the inverter tests the maximum frequency During the test sequence the frequency limit applied is Autotest shown in the display of the inverter Fan maxi a The frequency limit is reduced successively until the shut down threshold is reached and the inverter disconnects from the power distribution grid Once the inverter has disconnected from the power distribution grid the display successively shows the following values one after the other Disconnection value alone di zodlia con 43 95Hz Calibration value Reaction timel Tempo interuento Current grid frequency Frewuenza nete lal mp 54 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Commissioning Minimum frequency In the last step the inverter tests the minimum frequency During the test sequence the frequency limit applied is Autotest shown in the display of the inverter Fac mint du in bHz The frequency limit is increa
42. nt as described below 1 DANGER DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury N NOTICE NOTICE indicates a situation that can result in property damage if not avoided P Information 1 Information provides tips that are valuable for the optimal installation and operation of your product M This symbol indicates the result of an action 8 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Security 2 Security 2 1 Intended Use The Sunny Mini Central is a PV inverter which converts the direct current of the PV array to grid compliant alternating current and feeds it into the power distribution grid Operating Principle of a PV Plant with Sunny Mini Central Sunny Mini Central Power PV modules X Distribution distribution grid The Sunny Mini Central is suitable for indoor and outdoor use The Sunny Mini Central may only be operated with PV arrays PV modules and cabling of protection class Il The PV modules used have to be suitable for use with the Sunny Mini Central and must be released by the module manufacturer Alternative uses modifications to the Sunny Mini Central
43. nute average ALA VY TY Y Grid voltage fault Uu Output limitation Output limitation or device fault Da J DB Output 46 Output 4 6 kVA A OVA A 5 5 2 Cabling Cable Requirements For cabling the SMA Power Balancer use LiYCY cable structured as shown here Indoor 2 x 2 x 0 25 Outdoor Li 2YCYv 2 x 2 x 0 25 Position Description A Flexible insulation B Shielding Twisted pair 2 2 0 25 mm D Twisted pair 1 2 x 0 25 mm 42 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection Overview of the Connection Area Position Description Screw terminals for the wire bridge Screw terminals for connecting the cables Flat male tab for grounding the cable shield Silicone tube cable route A B Jumper slot D E F Cable glands Installation Manual SMC7OHV11 IA IEN1 12970 43 Electrical Connectio
44. 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 Damages during transportation Improper or inappropriate use of the product Operating the product in an unintended environment Operating the product whilst ignoring relevant statutory safety regulations in the deployment location Ignoring safety warnings and instructions contained in all documents relevant to the product Operating the product under incorrect safety or protection conditions Altering the product or supplied software without authority 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 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 Supplied software not developed by SMA Solar Technology AG
45. on of 0 05 Hz s and 0 05 Vn s for the frequency and voltage monitoring As soon as the actual measured value is outside the permitted range altered disconnection threshold the inverter disconnects itself from the power distribution grid In this way the inverter determines the reaction time and checks itself Overvoltage test The inverter begins with the overvoltage test During the test sequence the voltage limit applied is shown in the Autotest display of the inverter Lac mand AA TES The voltage limit is reduced successively until the shut down threshold is reached and the inverter disconnects from the power distribution grid Once the inverter has disconnected from the power distribution grid the display successively shows the following values one after the other Disconnection value Calibration value Reaction time Temeo interuento Current grid voltage El b Val off i AB gi 52 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Commissioning Undervoltage Test After the overvoltage test the inverter performs the undervoltage test During the test sequence the current Autotest calibration value of the voltage limit applied is shown in Lac mini ig the display of the inverter ea DG a The voltage limit is increased successively until the shut down threshold is reached and the inverter disconnects from the power distributio
46. or defective and disturbance 66 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Troubleshooting 9 2 Fault Messages When a disturbance occurs the inverter generates a message which depends on the operating mode and the type of the detected disturbance Message Description and corrective measure IPV Overvoltage Overvoltage at DC input IDISCONNECT DC Overvoltage can destroy the inverter Corrective measures Disconnect the inverter from the power distribution grid immediately 1 Turn off the miniature circuitbreaker 2 Remove the Electronic Solar Switch 3 Remove all DC connectors 4 Check DC voltage Ifthe DC voltage is above the maximum input voltage check the plant design or contact the PV array installer Ifthe DC voltage is under the maximum input voltage reconnect the PV array to the inverter as described in section 5 4 Connecting the PV Array DC page 30 If the message occurs again disconnect the inverter again and contact the SMA Serviceline see section 13 Contact page 85 ACVtgRPro The 10 minute average grid voltage is no longer within the permissible range This can be caused by either of the following The grid voltage at the connection point is too high The grid impedance at the connection point is too high The inverter disconnects to assure compliance with the voltage quality of the public grid Corrective measure
47. or the country a communication product e g Sunny WebBox or a PC with appropriate software e g Sunny Explorer This however is only required if the inverter was originally ordered for another country You can see the standard according to which the inverter was set upon delivery on the type label and the enclosed data sheet with the factory settings Installation Manual SMC7OHV11 IA IEN1 12970 47 Electrical Connection SMA Solar Technology AG 5 7 2 Setting Stand alone Grid Operation To operate the inverter in an off grid system with Sunny Island you must set the Default parameter to stand alone grid OFF Grid operation You have several possibilities to set the inverter to stand alone grid operation Setting via Sunny WebBox or Setting via Sunny Explorer DANGER Danger to life due to high voltages in the event of outage of the power distribution grid If you set the inverter to stand alone grid operation it does not fulfill any country specific standards and guidelines Therefore in the event of outage of the power distribution grid there is a danger of back feed Never operate the inverter directly on the power distribution grid when set to off grid operation 5 7 3 Additional Country Parameters r gt i tc Requirement for the setting Set the installation country as described in section 5 7 1 Setting the Installation Country page 47 before setting the country parameter
48. or the installation of components not expressly recommended or sold by SMA Solar Technology AG are not permitted Persons with limited physical or mental abilities may only work with the Sunny Mini Central following proper instruction and under constant supervision Children are forbidden to play with the Sunny Mini Central Keep the Sunny Mini Central away from children Only use the Sunny Mini Central in accordance with the information provided in the enclosed documentation Any other use can result in personal injury or property damage Do not mount the inverter on flammable construction materials Do not mount the inverter in areas where highly flammable materials are stored Do not mount the inverter in areas with a risk of explosion The enclosed documentation is a part of this product Read and follow the documentation for the proper and optimum use of the Sunny Mini Central Keep this documentation in a convenient place for future reference Installation Manual SMC7OHV11 IA IEN1 12970 9 Security SMA Solar Technology AG 2 2 Safety Instructions Electric Shock High voltages that can result in electrical shocks are present in the conductive component parts of the inverter Disconnect the inverter from voltage sources as described in this manual before performing any work on it see section 7 2 Opening the Inverter page 56 Burn Hazard Some parts of the Sunny Island enclosure can become hot during operation Only
49. ordance with DK 5940 Ed 2 2 Applies to Italy 51 Starting the Self Test by 51 Completion of the 52 Opening and Closing 56 ea cope eese 56 Opening the Inverfer 56 Closing the vete optan id 59 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Table of Contents 8 1 8 2 8 2 1 8 2 2 8 2 3 8 3 9 1 9 2 9 3 9 3 1 9 3 2 10 10 1 10 2 10 3 10 4 11 12 13 Maintenance and 61 Cleaning the Inverfer 61 Checking Heat Dissipotion 61 Gleaning ihe fans de o a te e e PUE 61 Checking the F ns oreet RR it tt 63 Cleaning the Ventilation Grids 64 Checking the Electronic Solar Switch ESS for Wear 65 Troubleshooting 66 Blink A A E ene 66 Fault 67 Red LED is Glowing Continuously 73 Checking the PV Array for Ground 74 Checking the Function of the Varistors 76 Decommissioning 78 Disassembling the Inverter
50. orrective measures Check the grid impedance and observe how often major deviations occur If repeated frequency variations occur and this is causing dZac Bfr or dZac Srr errors ask the distribution grid operator if he would agree to modify the operation parameters dZac Max Discuss any changes to this operation parameter with the SMA Serviceline EEPROM Transition disturbance while data is being written or read from EEPROM The data is not relevant for safe operation The disturbance has no effect on the performance of the inverter EEPROM dBh EEPROM data is defective the inverter has switched itself off because the loss of data has disabled important functions of the inverter Corrective measures Contact the SMA Serviceline EeRestore One of the duplicate data sets in the EEPROM is defective and has been reconstructed without loss of data This fault message only serves to inform you and has no effect on the performance of the inverter Fac Bfr Fac Srr FacFast The grid frequency is no longer within the permissible range Bfr Srr Fast is an internal message that has no meaning for the user The inverter disconnects itself from the public grid for safety reasons Corrective measures e Check the grid connection and contact the distribution grid operator if necessary power frequency is within the tolerable range but Fac Bfr Fac Srr or
51. ou have found no ground fault It is likely that one of the thermally monitored varistors is defective Check the varistors as described in section 9 3 2 Checking the Function of the Varistors page 76 Location of the ground fault The approximate position of the ground fault can be determined from the ratio of the measured voltages between the plus pole against ground potential PE and the minus pole against ground potential PE Example V 200 V 300V sss A 100 V 100 V ni 100 Y 100 V 100 Y 2 In this case the ground fault is between the second and third PV modules M The ground fault check is finished Installation Manual SMC7OHV1 1 IA IEN1 12970 75 Troubleshooting SMA Solar Technology AG 9 3 2 Checking the Function of the Varistors Varistors are wear parts Their functional efficiency diminishes with age or repeated strain as a result of overvoltage It is therefore possible that one of the thermally monitored varistors has lost its protective function i Position of varistors You can determine the position of the varistors using the illustration below Observe the following assignment of the terminals Terminal A outer terminal voristor connection with loop crimp Terminal B middle terminal Terminal C outer terminal voristor connection without loop crimp You can check the varistors
52. ounding set Upgrade kit for the positive connection to ESHV P NR ground of the DC input Negative grounding set Upgrade kit for the negative connection to ESHV N NR ground of the DC input SUNCLIX DC plug Field connector for conductor cross sectional SUNCLIX FC6 SET 84 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Contact 13 Contact If you have technical problems concerning our products contact the SMA Serviceline We need the following information in order to provide you with the necessary assistance Device type Inverter serial number Type and number of the PV modules connected Optional equipment e g communication products Blink code or display message of the inverter SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany www SMA de SMA Serviceline Inverters 49 561 9522 1499 Communication 49 561 9522 2499 Fax 49 561 9522 4699 E Mail Serviceline SMA de Installation Manual SMC7OHV11 IA IEN1 12970 85 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
53. part 4 Loosen the clamping clip To do so insert a 3 5 mm screwdriver into the terminal clamp and lever it out 5 Remove the cable The cable is now removed from the DC connector Installation Manual Electrical Connection SMC7OHV11 IA IEN1 12970 33 Electrical Connection SMA Solar Technology AG 5 4 4 Connecting the PV Array DC ES 71795 Danger to life due to high voltages in the inverter Before connecting the PV array ensure that the miniature circuit breaker is switched off NOTICE N Excessive voltages can destroy the measuring device Only use measuring devices with a DC input voltage range up to ot least 1 000 V 1 Disconnect the miniature circuitbreaker and secure against re connection 2 Pull the Electronic Solar Switch downward slightly towards the wall 3 Check the connection cables of the PV modules for correct polarity and make sure that the maximum input voltage of the inverter is not exceeded At an ambient temperature above 10 C the open circuit voltage of the PV modules must not be more than 90 of the maximum inverter input voltage Otherwise check the system design and the PV module connection If this is not done the maximum inverter input voltage can be exceeded at low ambient temperatures 34 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection NOTICE o Destruct
54. removed permanently because otherwise the device is not protected against insects entering 64 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Maintenance and Cleaning 8 3 Checking the Electronic Solar Switch ESS for Wear Check the Electronic Solar Switch for wear before plugging it in Depending on the shape of the Electronic Solar Switch you can estimate the wear on either the metal tongues A or on the plastic B Result M The metal tongues in the Electronic Solar Switch are undamaged and not discolored A Measure 1 Securely attach the Electronic Solar Switch handle 2 Recommission the inverter as described in section 6 Commissioning page 49 The plastic in the Electronic Solar Switch shows thermal deformation B or M The plastic in the Electronic Solar Switch is undamaged B The metal tongues in the The Electronic Solar Switch can no longer reliably Electronic Solar Switch have a brown disconnect the DC supply discoloration or are burned through A 1 Replace the Electronic Solar Switch handle before attaching it again for the order number see section 12 Accessories page 84 2 Recommission the inverter as described in section 6 Commissioning page 49 or Installation Manual SMC7OHV11 IA IEN1 12970 65 Troubleshooting SMA Solar Technology AG 9 Troubleshooting If the inverter displays other blink codes or fault me
55. s 1 Disconnect the inverter from both the DC and AC connections as described in section 7 2 Opening the Inverter page 56 DANGER A Risk of lethal electric shock Only touch the cables of the PV array on their insulation Do not connect strings with ground faults to the inverter NOTICE Excessive voltages can destroy the measuring device Only use measuring devices with a DC input voltage range up to at least 1 000 V 2 Measure the voltages between the plus pole of each string and the ground potential PE 3 Measure the voltages between the minus pole of each string and the ground potential PE 4 Measure the voltages between the positive and negative poles of each string A ground fault exists if the measured voltages are stable and the sum of the voltages from the positive pole to the ground potential and from the negative pole to the ground potential of a string is approximately equal to the voltage between the positive and negative poles 74 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Troubleshooting Result Measure M You have found a ground fault The installer of the PV array must remedy the ground fault in the affected string You can determine the location of the ground fault as described below Do not reconnect the faulty string Close the inverter and commission it as described in section 7 3 Closing the Inverter page 59 M Y
56. s Check the grid voltage at the connection point of the inverter If due to the local grid conditions the grid voltage is 253 V or more ask the distribution grid operator whether the voltage at the feed in point can be adjusted or whether they would agree to an alteration of the limit value ACVtgRPro parameter for power quality monitoring Ifthe grid voltage is continually within the tolerance range and this fault message is still displayed contact the SMA Serviceline Bfr Srr Internal measurement comparison fault or hardware defect Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline Installation Manual SMC7OHV11 IA IEN1 12970 67 Troubleshooting SMA Solar Technology AG Messoge Derating Description and corrective measure The Derating operating state is a normal operating condition which may occur occasionally and can have several causes Once the inverter enters the Derating state it will display the Derating warning until the next total shutdown of the device at the end of the day Corrective measures e Check heat dissipation as described in section 8 2 Checking Heat Dissipation page 61 dZac Bfr dZac Srr Sudden changes in grid impedance exceed the permissible range Bfr or Srr are internal messages of no relevance for the user The inverter disconnects itself from the public grid for safety reasons C
57. s can damage the inverter The internal component parts of the inverter can be irreparably damaged by electrostatic discharge Ground yourself before touching a component 7 2 Opening the Inverter 1 Disconnect the miniature circuitbreaker and secure against re connection 2 Pull the Electronic Solar Switch downward slightly towards the wall 3 Using a current probe ensure that no current is present at all DC cables pa V If current is present check the installation i p 56 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Opening and Closing 4 Unlock and disconnect all DC connectors using a 3 5 mm screwdriver Insert a screwdriver into one of the side slots 1 Disconnect DC plug connectors 2 All DC plug connectors are disconnected from the inverter The inverter is entirely disconnected from the PV array DANGER Danger to life due to high voltages in the inverter The capacitors in the inverter require 5 minutes to discharge Wait 5 minutes before opening the inverter 5 Ensure that no voltage is present at the DC plugs on the inverter pa M If voltage is present check the installation Installation Manual SMC7OHV1 1 IA IEN112970 57 Opening and Closing SMA Solar Technology AG 6 Remove all lid screws and pull the enclosure lid forward
58. s to remove it 7 Verify the absence of voltage L with respect to N at the AC terminal with an appropriate meter If voltage is present check the installation 8 Verify the absence of voltage L with respect to PE at the AC terminal with an appropriate meter If voltage is present check the installation M The inverter is free of voltage 58 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Opening ond Closing 7 3 Closing the Inverter 1 Tighten the enclosure lid with all screws and the corresponding conical spring washers in the sequence depicted on the right torque Nm The toothing of the conical spring washers must point toward the enclosure lid The scope of delivery of the inverter includes another spare screw and conical spring washer DANGER Danger to life due to enclosure lid carrying voltage The grounding of the enclosure lid is ensured by the conical spring washers Fasten the conical spring washers for all 6 screws with the toothing facing toward the enclosure lid 2 Check the assembled DC plug connectors for correct polarity and connect them to the inverter The DC connectors click audibly into position To unlock the DC connectors see section 7 2 Opening the Inverter page 56 3 Close all the DC inputs that are not needed as described in section 5 4 4 Conn
59. safety reasons Corrective measures Check the grid voltage and connection on the inverter If the grid voltage lies outside the acceptable range because of local grid conditions ask the distribution grid operator if the voltages can be adjusted at the feed in point or if they agree to changes in the values of the monitored operational limits operation parameters Vac Min and Vac Max If the grid voltage lies within the tolerance range yet Vac Bfr or Vac Srr faults are still displayed contact the SMA Serviceline Vpv Max Overvoltage at DC input The inverter could be damaged Corrective measures Disconnect the inverter from the power distribution grid immediately 1 Turn off the miniature circuit breaker 2 Remove the Electronic Solar Switch 3 Remove all DC connectors 4 Check DC voltage Ifthe DC voltage is above the maximum input voltage check the plant design or contact the PV array installer Ifthe DC voltage is under the maximum input voltage reconnect the PV array to the inverter as described in section 5 4 Connecting the PV Array DC page 30 If the message occurs again disconnect the inverter again and contact the SMA Serviceline see section 13 Contact page 85 Watchdog Internal program run disturbance Corrective measures Ifthis disturbance occurs frequently contact the SMA Serviceline Installation Manual SMC7OHV11 IA IEN1 12970 71 Troubleshooting SMA Solar Tec
60. sed successively until the shut down threshold is reached and the inverter disconnects from the power distribution grid Once the inverter has disconnected from the power distribution grid the display successively shows the following values one after the other Disconnection value Malore di soglia Corie SA Calibrotion value Reaction time Tempo interuento Current grid frequency E m 3 B iu TE T iial off 5B When the inverter has carried out the 4 tests it switches to MPP Operation MPP mode The original calibration values are then reset and the inverter automatically connects to the power distribution grid If you would like to carry out the test again you must disconnect the inverter i e disconnect it on the AC and DC sides and then later re activate it You can then restart the selftest as described in section 6 3 1 Starting the Self Test by Tapping page 51 The inverter starts again the test sequence as described in section 6 3 2 Completion of the Self Test page 52 Installation Manual SMC7OHV1 1 IA IEN1 12970 55 Opening and Closing SMA Solar Technology AG 7 Opening and Closing 7 1 Security DANGER A Risk of lethal electric shock Before opening the inverter observe the following Ensure that no voltage is present on the AC side Ensure that neither voltage nor current is present on the DC side I NOTICE o N Electrostatic discharge
61. ssages than those described below contact the SMA Serviceline You will also find a description of display messages during operation status messages and measuring channels in the user manual provided Do not perform any repairs that are not described here and take advantage of the 24 hour replacement service inverter ready for shipping and handed over to a freightforwarding company within 24 hours and the SMA Solar Technology AG repair service instead 9 1 Blink Codes Green Red Yellow Status Flashes Flashes Flashes OK startup phase is glowing continuously is not glowing is not glowing OK feed in operation is glowing continuously is not glowing Ground fault or varistor defective is glowing continuously OK startup phase is flashing quickly is not glowing is not glowing OK stop 3 x per second is glowing continuously is not glowing Ground fault or varistor defective is flashing slowly is not glowing is not glowing OK waiting grid 1 x per second monitoring goes out briefly is glowing continuously is not glowing Ground fault or varistor approx 1 x per defective second is not glowing is not glowing OK derating is not glowing is not glowing is not glowing OK nighttime deactivation or Electronic Solar Switch not connected is glowing flashing Fault is glowing continuously is not glowing Ground fault or varistor defective is glowing flashing Ground fault or varist
62. ssible to test the disconnection times at night 2 Connect the inverter with the power distribution grid and commission the inverter see section 5 2 Connection to the Power Distribution Grid AC page 24 and 6 1 Commissioning the Inverter page 49 The inverter is now in the startup phase i e all 3 LEDs are glowing at the same time 3 Start the self test immediately after all 3 LEDS have gone out by tapping on the display of the inverter 4 The question of whether you would like to start the test sequence appears in the display Tap on the Huuio Autotest display again within 30 seconds to confirm the B question Once you have started the test sequence the inverter checks the disconnection times for overvoltage undervoltage maximum frequency and minimum frequency one after the other During the tests the inverter shows the values in the display which are described in section 6 3 2 Completion of the Self Test page 52 Installation Manual SMC7OHV1 1 IA IEN1 12970 51 Commissioning SMA Solar Technology AG 6 3 2 Completion of the Self Test Note the values which are displayed during the self test These values must be entered into a test report The test results of the individual tests are displayed 3 times one after the other The respective display message is displayed for 10 seconds The self test changes the upper and lower disconnection thresholds for each protective function on a linear basis with a modificati
63. the display field with a damp cloth Do not use any corrosive substances e g solvents abrasives for cleaning 8 2 Checking Heat Dissipation 8 2 1 Cleaning the fans If the fan screens are only soiled with loose dust they can be cleaned using a vacuum cleaner If you do not achieve satisfactory results with a vacuum cleaner dismantle the fans for cleaning Procedure 1 Disconnect the inverter from both the DC and AC connections as described in section 7 2 Opening the Inverter page 56 2 Wait for the fans to stop rotating Cleaning the ventilation grid 3 Remove the ventilation grids Press the two latches on the right edge of the fan screen to the right using a screwdriver and loosen it from the bracket Carefully remove the ventilation grid 4 Clean the ventilation grid with a soft brush a paint brush a cloth or compressed air Installation Manual SMC7OHV1 1 IAIEN112970 61 SMA Solar Technology AG Maintenance and Cleaning Cleaning the fans 5 Press the front latches backward and the rear latch forward 6 Remove the fan by pulling it slowly and carefully downward Z Unlock and remove the plug The fan cables are long enough that you can lift the fans far enough out to disconnect the internal plug in the inverter Remove the fan 9 Clean the fan with a soft brush a paint brush or a damp cloth NOTICE o N Damage to the fan due to the use of pressurized air
64. the respective setting and always observe the local connection requirements and provisions of your distribution grid operator FaultGuard This operating mode allows for the implementation of a three phase grid voltage monitoring which also reacts to device disturbances If one of the 3 inverters indicates a grid voltage fault and stops feeding in the other two inverters also disconnect from the power distribution grid immediately 2 a QJ or QJ Grid voltage fault Grid disconnection Grid disconnection A Output O VA B Output O VA e Output O VA of the 3 inverters indicates a device fault and stops feeding in the other two inverters also disconnect from the power distribution grid 5 minutes later SI SJ 4 Device fault Grid disconnection Grid disconnection A Output 0 VA after 5 min a E after 5 min mn Outpt OVA Output OVA Installation Manual SMC7OHV1 1 IA IEN1 12970 39 Electrical Connection SMA Solar Technology AG PhaseGuard This operating mode allows for the implementation of o three phase grid voltage monitoring If one of the 3 inverters indicates a grid voltage fault and stops feeding in the other two inverters also disconnect from the power distribution grid automatically Grid voltage fault Grid disconnection Grid disconnection A Output O VA D Output 0 e p Output O VA If one of the three inverters indicates a device
65. the right torque 6 Nm The toothing of the conical spring washers must point toward the enclosure lid The scope of delivery of the inverter includes another spare screw and conical spring washer DANGER Danger to life due to enclosure lid carrying voltage The grounding of the enclosure lid is ensured by the conical spring washers Fasten the conical spring washers for all 6 screws with the toothing facing toward the enclosure lid DANGER Danger to life due to high voltages in the inverter Do not switch on the miniature circuit breaker until the PV array has been connected and the inverter is securely closed M The inverter is now connected to the power distribution grid AC Installation Manual SMC7OHV1 1 IA IEN112970 27 Electrical Connection SMA Solar Technology AG 5 2 3 Additional Grounding of the Enclosure If the installation requires you can use the ground terminal to connect a second protective conductor or as equipotential bonding Procedure 1 Insert the stripped grounding cable D under the clamping clip C max cross section 16 mm 2 Screw the clamping clip tight with screw A and conical spring washer The toothing of the conical spring washer must face toward the clamping clip M The inverter s enclosure is additionally grounded 28 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection 5 3 Setting th
66. tion amp Using Y adapters for parallel connection of strings Y adapters may not be visible within close proximity of the inverter or freely accessible The DC circuit may not be interrupted by Y adapters Observe the procedure for disconnecting the inverter as described in section 7 2 Opening the Inverter page 56 Requirements for the PV modules of the connected strings Same type Same number Identical alignment Identical tilt The connecting cables of the PV modules must be equipped with plug connectors The DC connectors for the DC terminal are included in the delivery The following limit values at the DC input of the inverter must not be exceeded Maximum input voltage Maximum input current 800 V DC 23 0 A DC DANGER Risk of lethal electric shock or fire The maximum possible input current per string is limited by the plug connectors used If the plug connectors are overloaded an electric arc may occur and there is a risk of fire Ensure that the input current for each string does not exceed the maximum flow current of the plug connectors used 30 SMC7OHV11 IAIEN1 12970 Installation Manual SMA Solar Technology AG Electrical Connection 5 4 2 Assembling the DC Plug Connectors In order to be connected to the inverter all connection cables of the PV modules must be equipped with the DC plug connectors provided To assemble the DC plug connectors proceed as follows
67. uitable TN C S grid Suitable TT grid if Un pg lt 30 V Suitable Split Phase Suitable Efficiency Maximum efficiency Nmax 96 2 European weighted efficiency ney 95 5 Installation Manual SMC7OHV1 1 1A IEN 112970 83 Accessories 12 Accessories SMA Solar Technology AG You will find the corresponding accessories and replacement parts for your product in the following overview If required you can order these from SMA Solar Technology AG or your dealer Description Brief Description SMA order number Ventilation grid Ventilation grid set rechts links right left as 45 7202 replacement part Electronic Solar Switch ESS handle replacement part ESS HANDLE 04 Also enter the inverter s serial number Power Balancer plug Upgrade kit to retrofit a Sunny Mini Central equipped with an SMA Power Balancer to the SMA Power Balancer connector system PBL SMC 10 NR Power Balancer Y cable Connecting cable 2 x 2 m for SMA Power Balancer connector system PBL YCABLE 10 connector areas 2 5 mm 6 mm RS485 upgrade kit RS485 interface A85PB SMC NR Bluetooth upgrade kit Bluetooth communication interface BTPBINV NR Power Reducer Box Power Reducer Box POWERREDUCERBOX Replacement varistors Set of thermally monitored varistors 2 pc MSWR TV7 incl insertion tool Insertion tool for the Insertion tool for varistors sets SB TVWZ replacement of varistors Positive gr
68. ure that all DC plug connectors are securely in place 8 Check the Electronic Solar Switch for wear as described in section 8 3 Checking the Electronic 5 Solar Switch ESS for Wear page 65 and attach it firmly a Y d NOTICE N Manipulating the connector in the handle can damage the Electronic Solar Switch The connector inside the handle must remain movable in order to ensure proper contact Tightening the screw voids all warranty claims and creates a fire risk Do not tighten the connector screw in the Electronic Solar Switch handle 36 SMC7OHV11 IA IEN112970 Installation Manual SMA Solar Technology AG Electrical Connection NOTICE Damage to Electronic Solar Switch If it is not correctly connected the Electronic Solar Switch can be damaged by high voltages Plug the handle firmly onto the socket of the Electronic Solar Switch Ensure that the Electronic Solar Switch is securely seated The PV array is now connected You can now commission the inverter as described in section 6 Commissioning page 49 The following connection options are optional Installation Manual SMC7OHV11 IA IEN1 12970 37 Electrical Connection SMA Solar Technology AG 5 5 Connection of the SMA Power Balancer The Sunny Mini Central is equipped with the SMA Power Balancer as standard This enables a circuit connection of 3 Sunny Mini Central inverters to a three phase fee
69. vervoltages Replacement varistors should be obtained as soon as possible 3 Insert an insertion tool into the openings of the terminal contacts 1 This releases the terminals If you do not receive an insertion tool for operating the terminals with your replacement varistors contact SMA Solar Technology AG As an alternative the individual terminal contacts can be operated using a 3 5 mm wide screwdriver Remove varistor 2 5 Insert new varistor 3 The pole with the small loop crimp must be fitted to terminal 1 when replacing the varistor 6 Close the inverter as described in section 7 3 Closing the Inverter page 59 M check and replacement of the varistors is completed Installation Manual SMC7OHV1 1 IA IEN1 12970 77 Decommissioning SMA Solar Technology AG 10 Decommissioning 10 1 Disassembling the Inverter 1 Open the inverter as described in section 7 2 Opening the Inverter page 56 2 Remove all cables from the inverter Tighten the enclosure lid with all screws and the corresponding conical spring washers in the sequence depicted on the right torque 6 Nm The toothing of the conical spring washers must point toward the enclosure lid 4 Remove the ventilation grids on both sides 5 Remove the two screws on the left and right side of the inverter that attach it to the wall bracket 6 Disconnect the theft protection if applicable 78 SMC

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