SUN2000-(12KTL, 15KTL, 17KTL, 20KTL)-M0 
User Manual 
 
Copyright © Huawei Technologies Co., Ltd. 
 
 
 
When routing the signal cable, ensure that it is separate from the power cable and away 
from interfering sources to prevent communication from being affected. 
 
The protection layer of the cable is in the connector. Cut off surplus core wires from the 
protection layer. Ensure that the core wires are completely inserted into the cable holes, 
and that the cable is securely connected. 
Figure 5-17 Signal definitions 
 
 
Table 5-3 Signal definitions 
RS485 
different
ial 
signal+ 
Used to 
connect 
to the 
RS485 
signal 
port on 
the 
SUN200
0 or 
SmartLo
gger100
0A 
RS485 
different
ial 
signal+ 
Used to 
connect 
to the 
RS485 
signal 
port on 
the 
SUN200
0 or 
SmartLo
gger100
0A 
RS485 
different
ial 
signal– 
RS485 
different
ial 
signal– 
RS485 
different
ial 
signal+ 
Used to 
connect 
to an 
RS485 
Dry 
contact 
interface 
for grid 
Connect
s to the 
Ripple 
Control