V
6.2.1 AC side requirements ........................................................................................... 28
6.2.2 Grid Connection ..................................................................................................... 31
6.3 PV Array Connection .......................................................................................... 35
6.3.1 PV Input Configuration ........................................................................................ 35
6.3.2 PV Input Connection ............................................................................................. 37
6.4 Grounding the Inverter ..................................................................................... 38
6.4.1 Grounding System Overview............................................................................. 38
6.4.2 Second Protective Earth Terminal .................................................................... 38
6.5 Communication Connection .......................................................................... 39
6.5.1 Communication Overview.................................................................................. 39
6.5.2 RS485 Communication System ......................................................................... 40
6.5.3 RS485 Communication Connection ................................................................ 43
7 Commissioning ...................................................................... 46
7.1 Inspection before Commissioning ............................................................... 46
7.2 Commissioning Procedure .............................................................................. 46
8 Disconnecting, Dismantling and Disposing the Inverter .... 50
8.1 Disconnecting the Inverter ............................................................................. 50
8.2 Dismantling the Inverter .................................................................................. 50
8.3 Disposal of the Inverter .................................................................................... 51
9 Troubleshooting and Maintenance ...................................... 52
9.1 Troubleshooting .................................................................................................. 52
9.1.1 Troubleshooting of LED Indicator .................................................................... 52
9.1.2 Troubleshooting of Faults in LCD Screen ...................................................... 52
9.2 Maintenance ......................................................................................................... 56
9.2.1 Routine Maintenance ........................................................................................... 56
9.2.2 Maintenance Instruction ..................................................................................... 57
9.3 Contact Sungrow Service ................................................................................. 58
10 Operation of LCD Display ...................................................... 60
10.1 Description of Button Function ..................................................................... 60
10.2 Menu Tree .............................................................................................................. 61
10.3 Main Screen .......................................................................................................... 62
10.4 Contrast Adjustment ......................................................................................... 63
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