Sungrow SG33CX - Page 57

User Manual 5 Electrical Connection
47
1
2
a
b
c
Outer diameter
D(mm)
Seal
4.5~6
c
6~12
a+b
13~18
b
Step 3 Strip the protection layer and insulation layer by appropriate length.
7 mm
20 mm
Step 4 Secure the cable to the terminal base.
M2
0.2 N.m
1
2
3
4
Step 5 Insert the terminal base into the corresponding terminal.
Tab. 5-3 Terminal definition
No.
Definition
1
RS485 A IN, RS485A differential signal+
2
RS485 A OUT, RS485A communication signal+
3
RS485 B IN, RS485B differential signal-
4
RS485 B OUT, RS485B communication signal-
Step 6 If other wiring operations need to be performed on the communication
board, finish the wiring operations before performing the following steps.
If otherwise, continue to perform the following steps.
Step 7 Install the junction box, see 5.7.2 Install the Junction Box.