Huawei SUN2000L-3KTL Quick Manual page 13

ALARM Port Pin Definition
No. Label Definition
1 ALARM– Alarm signal–
2 ALARM+ Alarm signal+
3 485B3 RS485B, RS485 differential signal–
4 485A3 RS485B, RS485 differential signal–
5 12V– Negative of the 12 V power supply
6 12V+ Positive of the 12 V power supply
7 N/A N/A
8 PE Grounding the shield layer
Description
Connect to the power port on an alarm
beacon
Connect to the RS485 signal port on
SmartPSB2000L smart PV safety box.
Connect to the power port on
SmartPSB2000L smart PV safety box.
N/A
Connects to the shield layer of the cable.
Click
12
Alarm port (ALARM)