Pin Denitio
n
Function Description Pin Denitio
n
Function Description
15 DIN5 Rapid
shutdown/NS
protection
For the rapid
shutdown DI
signal or
connecting to
the signal
cable of an NS
protection
device
16 GND
 
Scenario Where No Signal Cable Is Connected
If no signal cable is connected to the inverter, use a waterproof plug to seal the
cable hole of the signal cable connector and connect the signal cable connector to
the communications port on the inverter for better waterproof performance.
Figure 5-20 Connecting the signal cable connector
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 5 Electrical Connections
Issue 18 (2024-03-10) Copyright © Huawei Technologies Co., Ltd. 57