Pin Denition Function Description
9 485A1 RS485A1 dierential
signal +
Used for inverter cascading
or connecting to the RS485
signal port of a
SmartLogger
10 485B1 RS485B1 dierential
signal –
11 485A2 RS485A2 dierential
signal +
Used for connecting to the
RS485 signal port of the
power meter.
12 485B2 RS485B2 dierential
signal –
Figure 5-8 Cascading diagram
Procedure
Step 1 Route the cables through the connection box and prepare cable terminals.
● Before routing cables, check that the sealing strips of the connection box are
intact. Otherwise, the sealing and waterproof performance of the device may
be aected.
● The cable stripping length must meet the requirements. Otherwise, the sealing
and waterproof performance of the device may be aected.
● The OT terminal size must match the cross-sectional area of the AC output
power cable and the M5 screw specications.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 5 Electrical Connections
Issue 10 (2024-05-14) Copyright © Huawei Digital Power Technologies Co., Ltd. 44