IV
6.1 Terminal Description ......................................................................................... 29
6.2 AC Side Cable Connection ............................................................................... 30
AC side requirements ........................................................................................... 30 6.2.1
Grid Connection ..................................................................................................... 31
6.2.2
6.3 Connecting Inverter to PV Arrays .................................................................. 33
PV Input Configuration ........................................................................................ 34 6.3.1
PV Input Connection ............................................................................................. 35
6.3.2
6.4 Grounding the Inverter ..................................................................................... 38
Grounding System Overview............................................................................. 38 6.4.1
Second Protective Earth Terminal .................................................................... 39
6.4.2
6.5 RS485 Communication Connection ............................................................. 40
Communication Overview.................................................................................. 40 6.5.1
RS485 Communication System ......................................................................... 41
6.5.2
PLC Communication Connection ..................................................................... 42
6.5.3
7 Commissioning ...................................................................... 44
7.1 Inspection before Commissioning ............................................................... 44
7.2 Commissioning Procedure .............................................................................. 44
8 Disconnecting, Dismantling and Disposing the Inverter .... 47
8.1 Disconnecting the Inverter ............................................................................. 47
8.2 Dismantling the Inverter .................................................................................. 47
8.3 Disposal of the Inverter .................................................................................... 48
9 Troubleshooting and Maintenance ...................................... 49
9.1 Troubleshooting .................................................................................................. 49
9.2 Maintenance ......................................................................................................... 53
9.3 Contact Sungrow Service ................................................................................. 53
10 Sun Access APP................................................................... 54
10.1 Introduction to the System ............................................................................. 54
10.2 Acquire and install Sun Access APP.............................................................. 54
Installation Condition ........................................................................................ 54 10.2.1
Operation Steps ................................................................................................... 54
10.2.2
10.3 Logging Sun Access APP .................................................................................. 55
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