Growatt WIT 50-100K-US - Parallel Communication Connection

39
Fig 6.11 COM1 communication connection
3. The external communication terminals of the WIT 50-100K-US Inverters are described in Table
6.5. Short Pin 5 and pin 10 when the host computer is used.
Table 6.5 External communication terminal description
Definition of battery communication terminal
Number
Definition of signal
Note
1
PCS_RS485A_4
RS485_4
2
PCS_RS485B_4
3
RS485A1
RS485 terminal for external communication
4
RS485B1
5
Res_RS4851A
RS485 matching resistor
6
RS485A2
RS485 input port for the meter
7
RS485B2
8
RS485A2
RS485 output port for the meter
9
RS485B2
10
Res_RS4851B
RS485 matching resistor
11
PE
Grounding
12
REPO1
The WIT Inverter shutdown input dry contact
signal
13
REPO2
14
DO1
Generator start-up output dry contact signal
15
DO2
16
PE
Grounding
6.5.3 Parallel Communication Connection
The parallel signal terminal (COM2) of WIT 50-100K-US Inverters uses a 30-pin terminal. The
matching terminal is in the accessary kit. The connection steps are as follows: