V
5.3.3 Installing on the Floor .......................................................................................... 28
5.3.4 Horizontally Installing .......................................................................................... 29
6
Electrical Connection ............................................................. 31
6.1
Connection Conduit Entries ............................................................................ 32
6.2
Combiner Unit Description ............................................................................. 33
6.3
Connecting Inverter to AC Grid ..................................................................... 35
6.3.1 AC Side Requirements .......................................................................................... 35
6.3.2 Grid Connection ..................................................................................................... 35
6.4
Connecting Inverter to PV Arrays .................................................................. 38
6.4.1 PV Inputs Configuration ...................................................................................... 39
6.4.2 PV Connection Procedures ................................................................................. 41
6.5
Grounding the Inverter ..................................................................................... 43
6.5.1 Grounding System Overview............................................................................. 43
6.5.2 Second Protective Earth Terminal .................................................................... 44
6.6
Communication Connection .......................................................................... 45
6.6.1 Communication Overview.................................................................................. 45
6.6.2 Communication System ...................................................................................... 46
6.6.3 RS485 Communication Connection ................................................................ 48
6.6.4 Configurable Dry Contact ................................................................................... 50
6.6.5 RS485-NET Converting Card (Optional) ......................................................... 50
7
Commissioning ...................................................................... 51
7.1
Inspection before Commissioning ............................................................... 51
7.2
Commissioning Procedure .............................................................................. 51
8
Disconnecting, Dismantling and Disposing the Inverter .... 54
8.1
Disconnecting the Inverter ............................................................................. 54
8.2
Dismantling the Inverter .................................................................................. 55
8.3
Disposing the Inverter ...................................................................................... 57
9
Troubleshooting and Maintenance ...................................... 58
9.1
Troubleshooting .................................................................................................. 58
9.1.1 Troubleshooting of LED Indicator .................................................................... 58
9.1.2 Arc Fault Detection Self-test Fault ................................................................... 59
