Ethernet Communication Solution - Sungrow SG1250UD Installation Manual

Installation Manual
RS232 communication distance should be within 15m and RS485 communication
distance should be within 1,200m. Communication beyond this distance should
adopt optical fiber LAN. Electricity-optics change device and the optical cables
should be designed in accordance with the reality or adopt the available LAN
system. Sungrow can provide professional solutions.
 RS485 cable should be shielded twisted-pair for communication quality
(RVVP-2*1.0 shielded twisted-pair cable is recommended).
 Shielding layer of RS485 cable should be single-point grounded in the site of
monitor terminal.

7.11.3 Ethernet Communication Solution

The RJ45 port is located at the intelligent power distribution cabinet unit on the back of the
inverter, as shown in the figure below.
Single-inverter communication
Connect the RJ45 port of the inverter and the PC by using the cable (EIA/TIA568B).
Multiple-inverter communication
Ethernet switch is required for multiple inverters communication. The following system
monitoring solution can be adopted.
Fig. 7-11 Communication port
7 Electrical Connection
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