Huawei SUN2000-25KTL-US Quick Installation Manual page 12

Installing a DC input power cable (using metal stamping forming contacts)
Positive metal contact
Negative metal contact
Common PV cables with a
cross-sectional area of 12
AWG are recommended.
3.4 Selecting a Communication Mode
Model
Communication
SUN2000-
25KTL/30KTL-US
SUN2000-
25KTL/30KTL-US
3.5
Installing RS485 Communications Cables
When routing communications cables, ensure that communications cables are separated from
power cables and away from interfering source to prevent communication from being affected.
NOTE
1. If RS485 is used, connect the RS485 communications cable. If PLC (MBUS) is used, do not
connect the communications cable.
2. The RS485 communications cable can connect to either a terminal block or an RJ45 network port.
Use one connection mode in practice. Connecting to the terminal block is recommended.
3. If the RS485 communications cable is required, you are advised to route the RS485
communications cable through a pipe. Before connecting cables, remove the corresponding
waterproof cable connectors.
Method 1: Connecting to the Terminal Block (Recommended)
The DJYP2VP2-22 2 x 2 x 1 cable or a communications cable with a wire sectional area of 1 mm
2
(0.00155 in. ) and external diameter of 14–18 mm (0.55–0.71 in.) is recommended.
Ensure that cables cannot
be removed after crimped.
Communication Mode
RS485 PLC (MBUS)
Communication
Supported Supported
Supported Not supported
Ensure that the
cables are correctly
connected and the
voltage does not
exceed 1000 V.
1. Only one communications mode can be
selected in practice.
2. If PLC (MBUS) is used, do not connect the
RS485 communications cable.
N/A
11
Positive connector
Negative
connector
Click
Ensure that
the locking
nut is
secured.
Remarks
2