IV
6.2 AC Side Cable Connection ............................................................................ 29
6.2.1 AC side requirements .........................................................................................29
6.2.2 Grid Connection ...................................................................................................32
6.3 PV Array Connection ....................................................................................... 36
6.3.1 PV Input Configuration ......................................................................................36
6.3.2 PV Input Connection ..........................................................................................38
6.4 Grounding the Inverter .................................................................................. 41
6.4.1 Grounding System Overview ...........................................................................41
6.4.2 Second Protective Earth Terminal ..................................................................42
6.5 Communication Connection........................................................................ 43
6.5.1 Communication Overview ...............................................................................43
6.5.2 RS485 Communication System .......................................................................44
6.5.3 RS485 Communication Connection ..............................................................46
6.6 Configurable Dry Contact ............................................................................. 47
7 Commissioning ...................................................................... 50
7.1 Inspection before Commissioning ............................................................. 50
7.2 Commissioning Procedure ........................................................................... 50
8 Disconnecting, Dismantling and Disposing the Inverter .... 54
8.1 Disconnecting the Inverter ........................................................................... 54
8.2 Dismantling the Inverter ............................................................................... 55
8.3 Disposal of the Inverter.................................................................................. 55
9 Troubleshooting and Maintenance ...................................... 56
9.1 Troubleshooting .............................................................................................. 56
9.1.1 Troubleshooting of LED Indicator ..................................................................56
9.1.2 Troubleshooting of Faults in LCD Screen .....................................................56
9.2 Maintenance ..................................................................................................... 61
9.2.1 Routine Maintenance .........................................................................................61
9.2.2 Maintenance Instruction ...................................................................................61
9.3 Contact Sungrow Service .............................................................................. 64
10 Operation of LCD Display ...................................................... 65
10.1 Description of Button Function ................................................................... 65