
Electrical Connection
34
ESS Inverter User Manual
c
A
B
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PE
4.6.4
RS485 Connection
4-Pin Terminal Configuration of RS485 Communication
PIN
A
B
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Function
Description
RS485_A
RS485_B
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Connect RS485. Refer to the following steps:
2
1
3
Unscrew the waterproof cover
and loosen the rubber nut on
waterproof cover.
c
1
Insert 4-Pins terminal into corresponding port.
2
Screw the waterproof cover back to inverter firmly
with 4 x M4 screws(1.2N·m).
3
Install the seal into the threaded sleeve, fasten the
rubber nut.
Make the 4-Pin terminal according to above function description of each Pin definition.
Lead the RS485 cable through the rubber nut, seal and waterproof cover in turn.
RS485 cable
Threaded
sleeve
4-Pin
terminal
Don’t cut off any
communication cables.
Rubber nut
Inverter
side
Seal
Waterproof cover
Press the RS485 cable in the seal
via the side incisions.
RS485
Control Module
A
B
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