Sungrow SG125HX, User Manual

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5.11 PLC Communication Connection
With a PLC communication module built inside, the inverter can communicate with the
COM100A provided by SUNGROW. For specific wiring method, refer to the COM100A
user manual.
•
In case of PLC communication, both the multi-core cable and the single-
core cable can be used as the AC cable.
•
The COM100A is an optional device that can be ordered from Sungrow.
•
The COM100A conducts data communication by directly using the AC
output cable(L1&L3 wire) of the inverter and thus saves the trouble to lay
and maintain the special communication cables. The RS-485 port of the
COM100A supports the transparent transmission of the MODBUS-RTU
and is completely compatible with the monitoring devices and software of
the original RS-485 communication method.
5.12 Dry Contact Connection
Dry contact cables require a cross section of 1 mm 2 to 1.5 mm 2 .
The connection procedure of the dry contact is the same as that of the RS485
terminal block.
5.12.1 Dry Contact Function
The configuration circuit board is provided with fault output dry contact and emergency
stop dry contact, as shown in the figure below.
Connection method of the dry contacts is similar to that of the RS485 terminal block.
5 Electrical Connection User Manual