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4.5
Installing RS485 Communications Cables
1. When routing communications cables, separate communications cables from power cables to
prevent communication from being affected.
2. An RS485 cable can connect to either a terminal block or an RJ45 network port. It is
recommended that the RS485 cable connect to a terminal block.
Connecting to a terminal block (recommended)
You are advised to use a communications cable with the conductor cross-sectional area of 1 mm
and outer diameter in the range of 14 mm to 18 mm.
1. Remove an appropriate length of the jacket and core wire insulation layer from the
communications cables using a wire stripper.
2. Remove the locking caps from the COM1 and COM2 connectors at the inverter bottom and
then remove the plugs from the caps.
3. Route the communications cables through the locking caps, and then the COM1 (RS485 IN)
and COM2 (RS485 OUT) connectors at the inverter bottom.
4. Remove the terminal base from the terminal block, and connect the communications cable to
the terminal base.
No.
Port Definition
5
RS485A IN
6
RS485A OUT
7
RS485B IN
8
RS485B OUT
Description
RS485A, RS485 differential signal +
RS485A, RS485 differential signal +
RS485B, RS485 differential signal –
RS485B, RS485 differential signal –
10
2
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