Huawei SUN2000-4.95KTL-NHL2 Quick Manual page 11

3.7 Connecting the Combiner Box
For details about system commissioning, see
Smart AC Combiner Box Quick Guide
scanning the QR code.
Connecting the RS485 Communications Cable
3.7.1
Connect the RS485 communications cable of an external device to the RS485-1 or RS485-2 port
on the JX01 terminal block.
No. Port on the JX01 Terminal Block
1 RS485-1(+)_COM1(+)
2 RS485-1(-)_COM1(-)
3 RS485-2(+)_COM2(+)
4 RS485-2(-)_COM2(-)
1. Prepare an RS485 communications cable.
The RS485 communications cable and single-phase power cable share a ground point.
2. Connect the RS485 communications cable to the JX01 terminal block.
SUN2000-4.95KTL-NHL2
Cascading Scenario
SmartACBox 10-In 1-Out
, which can be obtained by
Definition
RS485-1, RS485 differential signal+
RS485-1, RS485 differential signal–
RS485-2, RS485 differential signal+
RS485-2, RS485 differential signal–
Insulate the shielding layer of the RS485
communications cable that is connected to the
ground point in the chassis.
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