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Selectronic SelectSun 20K Instruction Manual Download Page 56

 

Options | External Turn Off Signal 

56 | Doc. No. 982055, Version 01, SelectSun 20K 

8.2 

External Turn Off Signal 

8.2.1 

Overview 

The SelectSun 20K inverters have an internal grid protection relay and section switch. 
Depending on local connection, installation instructions and the selected line voltage level either the internal 
grid protection relay can be used with section switch, or an external grid protection relay must be used with 
section switch also. 
It is also possible to combine the internal to the external grid protection relay. 

2

3

4

6

5

7

1

1

1

 

 

1

 

Photovoltaic modules 

2

 

Solar Inverter 

3

 

Three phase, redundant section switch 

4

 

Control line 

5

 

Grid measurement 

6

 

Grid protection device 

7

 

Public grid 

 

8.2.2 

Function 

The internal section switches of the inverter can be controlled by an external signal. 
At a signal voltage between 7.5 and 10 V the inverter feeds into the grid. If the signal voltage falls below 
7.5 V, an error message will occur and the inverter will stop to work within the configured switch of time. 

Nominal voltage 

10 VDC 

Voltage (operation) 

7.5 … 10 VDC 

Voltage (Stop) 

0 … 7.5 VDC 

Standard switch-off time inverter 

50 ms 

Switch-off time range 

50 ms … 100 ms 

 

Summary of Contents for SelectSun 20K

Page 1: ...Instruction Manual for SelectSun 20K Photovoltaic String Inverter Installation Operation Service Doc No 982055 Version 01 Date 2018 03 Language English ...

Page 2: ...ons or of improper usage The operating maintenance and safety instructions are to be read carefully prior to installation and commissioning The installation commissioning and safety related check must be undertaken by a qualified electrician Error free and safe operation of the device requires proper and professional transport storage assembly and installation as well as careful operation and main...

Page 3: ...tion during Handling and Assembly 11 2 7 Please Note Before Starting Up 11 2 8 Additional Symbols and Warning Notices on the Inverter 12 3 Description of Device 13 3 1 Infastructure Requirements 13 3 2 Features of SelectSun 20K 13 3 3 External Dimensions 14 3 4 Block Diagram 14 3 4 1 SelectSun 20K 14 3 5 DC Connection 15 3 6 Internal Data Logger 15 4 Installation 16 4 1 Assembly Site Requirements ...

Page 4: ...a 38 5 10 Menu Structure 40 6 Configuration 41 6 1 Changing the Menu Language 41 6 2 Limitation of the Power Output 41 6 3 Monitoring Portal 42 6 4 PC Configuration Tool 42 6 5 Communication via Ethernet 43 6 5 1 Automatic Setting via DHCP 43 6 5 2 Manual Setting 43 6 6 Communication via RS485 44 6 7 Portal Monitoring 44 6 8 Sending Config 45 6 9 Portal Test Function 45 7 Troubleshooting 46 7 1 Se...

Page 5: ...l Stop Signal DRM 0 57 8 2 4 Configuration of the External Stop Signal DRM 0 58 8 2 5 Attach the DRM 0 Sticker 58 9 Maintenance 59 9 1 Maintain the Inverter 59 10 Decommissioning 60 10 1 Remove Inverter 60 10 2 Disposal 61 11 Technical data 62 11 1 Inverter 62 12 Certificates 64 13 Contact 65 ...

Page 6: ... instructions 1 1 Symbols and Markup Prerequisite One step instruction 1 Multiple step instruction Bulleted list Highlighting Highlighting within a text Result 1 2 Warning Notices 1 2 1 Layout of a Warning Notice SIGNALWORD WARNING INSTRUCTIONS CATEGORY Type and source of danger Consequences if the warning is not observed Required action to avoid the risk 1 2 2 Categories of Warning Notices DANGER...

Page 7: ...id injury NOTICE Can lead to property damage if ignored Follow the warnings to avoid damage or destruction of the product This symbol represent important notes concerning potential harm to people this unit or associated equipment 1 3 Information Note A notice describes information which is important for the optimum and cost effective operation of the equipment ...

Page 8: ... IP 65 NEMA 4 and can be used indoors and outdoors Any other use is not considered to be a designated use The manufacturer accepts no liability for damages resulting from this 2 2 Qualification of Personnel Target group for these instructions are professionals who can assess the assigned tasks due to their professional training knowledge and experience as well as knowledge of the relevant provisio...

Page 9: ...the DC plug always open DC switch Every power supply line must be equipped with an appropriate AC disconnecting device A consumer must never be switched between an inverter and line protection switch Access to the shutdown mechanism must always be free Installation and commissioning must be carried out properly DANGER Danger to life from electric shock After the device has been switched off the in...

Page 10: ...e followed Before switching on a check must be made to ensure that the plugs are firmly in place locked Before plugging or unplugging the DC plug always disconnect the connection to the PV generator The feeder must be isolated and secured against being switched on again before working at the AC grid 2 5 Protection against Contact with Hot Parts CAUTION Danger of burns caused by hot surfaces on hou...

Page 11: ...ries and spare parts approved by the manufacturer Adherence must be ensured to the prescriptions and stipulations regarding safety of the country in which the inverter is to be used The ambient conditions stated in the product documentation must be observed Starting up is prohibited until the entire system meets the national regulations and safety rules regarding use Operation is only permitted wi...

Page 12: ...ning sign Warning of electrical voltage Hot surface The housing can get hot during use This symbol advises that the user handbook must be read before the device is used The inverter must be earthed before use Before beginning of work switch unit free of voltage Warning of electrical voltage on DC and AC side All solar strings on the DC side are at voltage Discharging time of the device longer than...

Page 13: ...on of electrical equipment wiring systems BDEW Technical Guidelines VDN Technical Guidelines 3 2 Features of SelectSun 20K The SelectSun 20K is a transformer less three phase solar inverter which has a particularly high efficiency at any operating point Heat is dissipated only be convection An internal monitor prevents the device from exceeding the permissible ambient temperature The inverter is d...

Page 14: ...ions 14 Doc No 982055 Version 01 SelectSun 20K 3 3 External Dimensions Fig 1 External dimensions 3 4 Block Diagram 3 4 1 SelectSun 20K Fig 2 Block diagram SelectSun 20K 1 DC overvoltage protection type 3 2 AC overvoltage protection type 3 ...

Page 15: ...tures an internal data logger that allows measured values to be simultaneously recorded in the form of parameters If the storage capacity is full the oldest data is overwritten With the default setting on delivery the data logger logs 16 measuring channels Recording cycle Storage time 1 minute 2 5 years 2 minutes 5 years 5 minutes 12 5 years 10 minutes 25 years ...

Page 16: ... and safe access to the devices must be ensured The following requirements of the installation site must be upheld Only vertical installation is permitted as otherwise the cooling of the device cannot be guaranteed convection cooling Do not subject the inverter to any direct sunlight A fixed wall or a metal construction is necessary for installation The weight of an inverter is 38 4 kg Relevant co...

Page 17: ...vices must be transported under clean and dry conditions if possible in their original packaging The transport temperature must be between 25 70 C Permissible variations in temperature may not exceed 20 C 68 F per hour 4 3 Storage The devices must be stored in clean and dry premises if possible in their original packaging The storage temperature must be in the range of 25 55 C Permissible variatio...

Page 18: ...n a non vertical orientation poses a risk of ingress Only unpack the device when it is to be installed Failure to do so voids your warranty The inverters are heaviest at the top They are therefore packed upside down to facilitate transport You will therefore see the bottom side of the device connectors after having opened the package Take the device at the two holding grips that are visible on the...

Page 19: ...ry Do not use the cover to hold the device Only use the four holding grips to move the device NOTICE Danger of damage to property When designing the attachment of the wall mounting plate take the product weight of 38 4 kg into account Do not open device Opening the device voids the warranty The inverter is mounted using the wall mounting plate which is included in the scope of delivery ...

Page 20: ... Ensure that the rib profile is locked behind the nuts 4 Secure the inverter in these nuts using the enclosed screws M5x20 As an alternative you can also use a padlock shackle 4 mm in diameter to protect the inverter against theft The design of the wall bracket ensures that the inverter is automatically centered in this bracket 5 In order to avoid adhesive residue on the display remove the display...

Page 21: ...ground wire cross section must be bigger than the cross section of the power supply line In addition ensure that the ground wire is placed as far away from and not directly in parallel to the power supply line The maximum permissible torque for this screw is 10 Nm 7 ft lbs 4 9 Residual Current Protection 4 10 Power Connection DANGER Risk of electric shock and fire caused by high discharge current ...

Page 22: ...ly national standards are to be upheld The following specifications of the local grid operator are to be observed Pertinent technical and special regulations Installation approval must be in place Check the line voltage It must be within the technical data for that device If the line voltage is higher contact your local network operator The AC side must not be measured by inserting test probes int...

Page 23: ... forces on the net connection The lateral forces must not exceed 250 N The seal is run through a hole in the screw below the screw head of the adapter housing and the opening provided and attached to the housing of the device The following table shows the maximum wire lengths upon use of a SelectSun 20K depending on the cable cross section with a voltage drop below 1 Line cross section 6 0 mm 10 0...

Page 24: ...er Supply Line 24 Doc No 982055 Version 01 SelectSun 20K Fig 9 Preparation of plug cable 3 Screw in plug 4 Note torque specification according to illustration Fig 10 Screw in plug 5 Determine diameter 6 Seal connection ...

Page 25: ...higher AC cable inductance can lead to increasing line impedances This can lead to voltage distortions and error messages with regards to Grid overvoltage long cable Increased operating noise of the inverters short cable To avoid these disadvantageous conditions twisted lines should be used for power supply if possible If laying of twisted lines is not possible the following requirements must be m...

Page 26: ...it is switched on the inverter automatically checks the insulation of the PV generator If the isolation is defective the inverter switches off automatically The inverter can only be started once the PV generator isolation error has been removed Be absolutely sure to verify proper polarity when connecting the PV strings Any inappropriate connection of individual strings may damage the PV generator ...

Page 27: ...olates the string from the intact strings so that destruction is prevented 4 13 1 DC Connection Please note the following information plug type cross section regarding the DC power cable Designation Type Art No PHOENIX CONTACT Outer Diameter Cable Cross Section Connectors PV CM S 2 5 6 1774687 5 8 mm 4 6 mm Connectors PV CF S 2 5 6 1774674 5 8 mm 4 6 mm PV C PROTECTION CAP 1785430 If necessary the...

Page 28: ...dii specified by the manufacturer Only connect the connectors to other SUNCLIX connectors When connecting always observe the specifications for rated voltage and rated current The smallest mutual value is valid Protect the connector against moisture and dirt Do not submerge the connectors under water Do not lay the plug directly on the roofing Protect unplugged connectors with a protective cap e g...

Page 29: ... SZF 1 0 6X3 5 1204517 1 Enter screwdriver as demonstrated in picture below 2 Leave screwdriver attached and separate bush and plug from one another Fig 13 Disconnect connector 4 13 2 3 Remove cable 1 Unscrew cable screwing 2 Enter screwdriver as demonstrated in picture below 3 Pry open connection and separate barrel and insert from one another 4 Open spring with screwdriver Remove cable ...

Page 30: ...ata logger of a remote monitoring system Portal Data Logger Park Control Ethernet RS485 RS485 Ref 4 4 3 3 2 2 4 4 3 3 2 4 Bus termination 1 3 2 2 4 3 2 Inverter 1 Inverter 2 Inverter n Fig 15 Standard interface When using this interface please note that each device using the bus requires a unique address The bus termination is made by means of wire jumpers on RS485 OUT to the last bus user inverte...

Page 31: ...5 connecting cables and sensor cables results in defects and malfunctions If inverters are connected in series a reversed RS485 can damage further connected inverters Make sure that each of the RS485 connection plugs is connected with the RS485 receptacle intended for it If the connectors are reversed correctly plug the RS485 connecting cables immediately 4 15 Ethernet Interface Connection The Eth...

Page 32: ...Ethernet Inverter 1 Inverter 2 Inverter n Eth2 Eth3 Eth n Ethernet Ethernet Ethernet Fig 17 Ethernet interface NOTICE In order to ensure IP 65 protection the plug type mentioned above must be used Failure to observe this can lead to damage to the inverter and therefore void the warranty ...

Page 33: ...r supply line absent of voltage Make the device absent of voltage using DC circuit breaker Check that the DC cables of the PV generator are de energized Protect the voltage supply from being reactivated DANGER Risk of electric shock and fire caused by high discharge current Before connecting the device to the supply circuit establish a ground connection 5 1 Turning on the Device 1 Verify that the ...

Page 34: ... replacement devices The country code can then only be changed by authorized service personnel NOTICE Cancellation of the operating license Operating the inverter with the wrong country code can lead to the withdrawal of the interconnection agreement from the energy supplier We assume no liability for the consequences of an incorrectly set country code 5 2 1 Set Country Code Grid Guideline The fol...

Page 35: ...y confirm the country code if you are absolutely sure it is correct If you are not sure press ESC to cancel your selection and correct the selection If the country code is to be accepted then confirm with OK A restart then takes place ERROR and GROUND FAULT status LEDs flash red alternately 5 3 Device Start Solar modules are irradiated with sufficient sunlight Country code is set Time and date is ...

Page 36: ...trol Panel Fig 18 Control panel with status LEDs display and keys F1 Displays the Menu F2 In basic display Reboot of display Energy x kWp display Input of standardized normalized data Function in the menu Navigation within the menu level previous menu next menu Function while parameters are edited digit to the left digit to the right decade jump Selection within the menu ESC Acknowledge failures a...

Page 37: ... Volts V E day Energy yield of the day in kWh 5 6 Graphical Display Press the arrow key once to display the development of the day s feed power Fig 20 Today s feed power display Press the arrow key to display the development of the previous days Press the ESC key to return to the basic screen display PAC 8260 W VAC 405 V VDC 634 V E day 27 6 kWh Feeding Menue kW 01 03 2017 36kWh 40 20 0 5 10 15 20...

Page 38: ...ergy yield normalized on the display Press the ESC key to return to the basic screen display 5 9 Input of Standardized Data To change the normalization press the F2 key and enter the currently connected PV generator power as follows keys Press the key to select the digits before the point Press the key to select the digits after the point key Press the key to increment the selected digit by 1 key ...

Page 39: ...5 Version 01 SelectSun 20K 39 Fig 23 Standardized data input display Press the OK key to apply the set value Press the ESC key to discard the value and display the previous normalized yield level Press the F1 key to display the menu Installed PV kWp 15 0 ...

Page 40: ...on displays and setting displays Energy absolute Energy normalized Analysis Actual values Failure memory Configuration Device Information DC AC Sensors Country Power Languages Limitation PAC Communication Date Time Portal settings Overview Version number Country Current language Ethernet Activation Send configuration Portal Testfunction Ethernet RS485 Norm Factor F2 ...

Page 41: ...anguage 7 Press OK to confirm The menu switches to the selected language The display is initially empty 8 Press ESC to return to the menu 6 2 Limitation of the Power Output Proceed as follows in order to limit the power output of the inverter 1 Using the F1 key select the menu item Configuration and confirm with the OK key 2 Select the sub menu PAC Limit and confirm with the OK key 3 Enter the inv...

Page 42: ...m 6 4 PC Configuration Tool You can upgrade the firmware of the inverters and change country specific parameters of the inverter with the PC Configuration Tool You can connect the PC with the inverters via Ethernet or USB using a RS485 USB converter For extended settings you will receive a personal password on request from the Selectronic Australia Pty Ltd Service Functions Firmware update Export ...

Page 43: ...given by the responsible network administrator and individually set in each inverter 1 Navigate to Configuration Communication Ethernet IP address 2 Enter IPv4 address The IPv4 address is arbitrary but must be consistent throughout the subnet Default value 192 168 130 30 3 Press OK to confirm 4 Navigate to Configuration Communication Ethernet Subnet mask 5 Enter IPv4 mask The IPv4 mask is arbitrar...

Page 44: ...spec address 0 cannot be used address 0 is automatically set to address 1 5 Multimode USS Modbus RTU Sunspec in Multimode you cannot use USS address 0 and 2 Baud rate 57600 preset and recommended 115200 for short RS485 networks Parity even Handshake no Data bits 8 Stop bits 1 Protocol USS protocol 6 7 Portal Monitoring To ensure the inverter sends data via Ethernet to the monitoring portal the por...

Page 45: ... monitoring portal in order to recognise the inverter If you want to send it manually select the menu and set the parameter to 1 If the sending was successful the parameter will be set back to 0 automatically 6 9 Portal Test Function Menu Configuration Portal monitoring Portal Test On request of our service you can send a test data package to the portal Open the menu and select yes ...

Page 46: ...he inverter power section is isolated from voltage supply if a limit value is exceeded or if a failure occurs However the DC and AC voltages may still be available The corresponding fault message appears in the display The fault is indicated on the control panel by the red ERROR LED emitting steady light Fault messages are stored in the fault memory where they will remain even in the event of a po...

Page 47: ...requency has dropped below the limit value 9000A DC link 3 DC voltage measurement error Wait for the measuremets to become stable again If this takes more than 2 3h please contact Service 9000B DC link 1 Imbalance low Difference between the DC link voltages is too high 9000C DC link 2 Imbalance high Difference between the two boosted DC link voltages is too high 9000D DC link 4 The boosted DC volt...

Page 48: ...fy the error contact Service 90021 Initialisation C0 90024 SR parameter error Error in parameter initialisation The device has been permanently shut down Please contact Service 90029 Update fault Update failed The update has failed Contact Service 9002A Keep Alive Internal communication monitoring has determined a fault Please contact Service 9002B Update End Update successful notification An upda...

Page 49: ...t switch device off and on again If this does not resolve the problem contact Service 90054 Overvoltage 2 The phase voltage has exceeded the limit value of the voltage average monitor for too long As long as the inverter is detecting the voltage error monitor line voltages analyse grid If you consider the line voltages to be in order contact Service 90055 Grid overvoltage Line to line overvoltage ...

Page 50: ... settings A0021 ARC fault detected Arc fault detection has triggered a disconnection Reset the arc fault detector Press ESC on the Disblay A0022 Ext OVGR Signal External stop signal OVGR is detected During the inverter detects OVGR Verify External stop signal OVGR Possible causes wire breakage A0102 Overtemperatur e LT 1 Cooler overtemperature right Check temperature of direct surroundings and red...

Page 51: ... section and control and regulation unit divergent A011A Activation LT 1 Voltage booster self test failed Do nothing The inverter will acknowledge the error automatically If problem occurs repeatedly contact Service A011B Activation LT 2 DC link voltage drop during activation A011C Activation LT 3 Target value for balancing is invalid A011D Activation LT 4 Balancing has failed Please contact Servi...

Page 52: ...ure sensor cooler right A0179 Temp Sensor IL LT checking open loop or short loop for temperature sensor cooling interior left A017A Temp Sensor IR LT checking open loop or short loop for temperature sensor cooling interior right A017B Temp Sensor KL LT checking open loop or short loop for temperature sensor cooler left A017C N15V LT aux Supply N15V supply voltage at the power stack is too low A017...

Page 53: ...x AWG 23 0 25 mm shielded line max 328 ft 100 m 8 1 1 Inverter Sensor Interface Fig 24 Connector M12 x 1 straight shielded pole arrangement male M12 5 pins A coded view of male connector side PHOENIX CONTACT designation SACC M12MS 5SC SH Inverter sensor pins Signal Pin 1 Supply voltage 24 VDC max 2 W Pin 2 Ground Pin 3 Signal Input 1 0 10 V Pin 4 Signal Input 2 0 10 V Pin 5 Shield 8 1 2 Sensor Typ...

Page 54: ...82055 Version 01 SelectSun 20K 8 1 3 Assembling of the Sensor Plug 0 16 0 31 0 6 ft lbs 2 ft lbs 0 79 AWG 26 20 0 47 1 3 0 39 8 1 4 Connection of the Sensor at the Solar Inverter Fig 25 Standard connection at a solar inverter not applicable at AFCI variant ...

Page 55: ...igures with PC configuration tool The data are recorded by the datalogger and are visible within the monitoring portal The actual values of the sensor can be viewed in Actual values Sensor The data continues to be recorded with the data logger and can be viewed via the monitoring portal Note The shield of the sensor line dotted line must be applied to PIN 2 and PIN 5 The outer diameter of the conn...

Page 56: ... internal to the external grid protection relay 2 3 4 6 5 7 1 1 1 1 Photovoltaic modules 2 Solar Inverter 3 Three phase redundant section switch 4 Control line 5 Grid measurement 6 Grid protection device 7 Public grid 8 2 2 Function The internal section switches of the inverter can be controlled by an external signal At a signal voltage between 7 5 and 10 V the inverter feeds into the grid If the ...

Page 57: ...SelectSun 20K 57 8 2 3 Connections of the External Stop Signal DRM 0 Fig 27 Single external stop signal Fig 28 Redundant external stop signal does not apply to AFCI variant Fig 29 Single external stop signal with sensor connected does not apply to AFCI variant ...

Page 58: ... configured at the inverter display at Configuration External Signal It is also possible to perform the configuraton with the PC configuration tool This PC tool allows to define different voltage ranges and switch off times The inverter integrated grid protection can be deactivated if authorized by the grid operator DANGER Risk of electric shock and fire caused by high discharge current Before con...

Page 59: ...e the cooling system is maintenance free Periodically based on site conditions visual inspection of the cooling fins is recommended to identify any debris accumulation that could occur If found the debris must be removed to ensure that the convection cooling is not inhibited Cleaning with high pressure cleaners is prohibited Annually the DC switch has to be operated without electricity 5 times ...

Page 60: ...g the device voids the warranty NOTICE Danger of damage to property Do not use the cover to hold the device Only use the four holding grips to move the device Fig 30 Handles on the inverter 10 1 Remove Inverter 1 Deenergize the inverter completely 2 Remove all cables from the inverter 3 Loosen the screws M5x20 securing the inverter to the wall mounting bracket 4 Remove the inverter from the wall m...

Page 61: ... rules applicable in the country where the inverter is installed Do not dispose of the inverter with normal domestic waste The inverter conforms to RoHS That means that the device can be taken to municipal disposal sites for household appliances Selectronic Australia Pty Ltd takes the inverter back completely Please contact the Service team ...

Page 62: ... Plus 6 x Minus Phoenix Sunclix AC data AC nominal power kW 20 AC grid connection L1 L2 L3 N PE Nominal power factor 1 Nominal power range 0 8i 0 8c Nominal voltage AC V 400 Voltage range AC V 320 460 Nominal frequency Hz 50 60 Frequency range Hz 45 65 Max AC current A 30 4 Max distortion factor THD 1 8 Max efficiency 98 2 Feed in from W 50 Self consumption night W 0 5 Ambient conditions Cooling N...

Page 63: ...tion Redundant grid relay according to VDE 0126 1 1 Residual Current Monitoring RCD Yes Protection class IEC 62103 I Overvoltage category EN 60664 1 DC II AC III General Data Interfaces Ethernet RS485 Sensor Temperature sensor Irradiation sensor Remote stop signal Dimensions W x H x D mm 535 x 601 x 277 Dimensions with packaging W x H x D mm 595 x 640 x 395 Device weight kg 38 4 kg Weight with pac...

Page 64: ...30 2005 IEC 60068 2 78 2001 EN 60529 1991 A1 2000 A2 2013 IEC 60364 7 712 2016 EMC Immunity EN 61000 6 1 2007 EN 61000 6 2 2005 EMC Emissions EN 61000 3 12 2011 EN 61000 3 11 2000 EN 61000 6 3 2011 EN 61000 6 4 2007 A1 2011 Grid Codes Guidelines AS NZS 4777 2 2015 AS 4777 3 2005 AS NZS 3100 2017 VDE AR N 4105 2011 BDEW Mittelspannungsrichtlinie medium voltage directive TR3 Rev 23 TR4 Rev 7 TR8 Rev...

Page 65: ...al problems to Service Hotline 61 3 9727 6600 In Australia Freecall 1800 006 474 Online Website http www selectronic com au contact Support Ticket http www selectronic com au support ticket htm You should have the following data at hand Exact description of the error with error code Device type Serial number Firmware version ...

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