Huawei SUN2000-29.9KTL Quick Manual page 13

1. Remove an appropriate length of the jacket and core wire insulation layer from the
communications cable using a wire stripper.
2. Remove the locking caps from the COM1 and COM2 connectors at the SUN2000 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 SUN2000 bottom.
4. Remove the terminal base from the terminal block, and connect the communications cables to
the terminal base.
5. Install the terminal base on the terminal block,
and connect the shield layer to the ground point.
NOTE
When connecting the shielded cables, choose whether to crimp the OT terminal based on site
requirements.
7. Use a torque wrench with an open end of 33 mm to tighten the locking cap to a torque of 7.5 N· m,
and seal the waterproof connector.
No. Port Definition
1 RS485A IN
2 RS485A OUT
3 RS485B IN
4 RS485B OUT
6. Bind the communications cables.
12
Description
RS485A, RS485 differential
signal +
RS485A, RS485 differential
signal +
RS485B, RS485 differential
signal –
RS485B, RS485 differential
signal –