Huawei SUN2000-25KTL-US Quick Installation Manual page 9

Method 1: Connecting to the
Terminal Block (Recommended)
The DJYP2VP2-22 2*2*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.
1. Peel off the RS485 communications cables.
3. Bind the RS485 communications cables.
Method 2: Connecting to RJ45 Ports
You are advised to use a CAT 5E outdoor shielded network cable with a diameter less than 9 mm
(0.35 in.) and internal resistance no greater than 1.5 ohm/10 m (1.5 ohms/393.70 in.).
1. Install RS485 connectors.
2. Connect the RS485 communications cables.
NOTICE
1. Connect the communication cables to the COM1
(IN) and COM2 (OUT) holes at the bottom of the
inverter.
2. Connect the input end to terminals 5 and 7 on the
terminal block, and connect the output end to
terminals 6 and 8 on the terminal block.
3. Use OT terminals that use M4 screws to connect
the shield layer.
The figure shows the connector when the
surface without the fastener faces
upwards. The cable sequence numbers
and pins are defined as follows:
No. Pin Definition
1 RS485A, RS485 differential signal +
2 RS485B, RS485 differential signal -
3 NC
4 RS485A, RS485 differential signal +
5 RS485B, RS485 differential signal -
6 NC
7 NC
8 NC
8
2