Sungrow SG125HV-30, User Manual

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User Manual 5 Electrical Connection
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according to the marks on the configuration circuit board.
Step 3 According to the position of the inverter (refer to the prior section), repeat
step 1
…2 to connect the other RS485 cables.
Step 4
Lightly pull on cables to confirm whether they are fastened firmly.
Step 5
According to the position of the inverter (refer to the prior section), switch
the terminating resistor ON or OFF.
Step 6
Tighten the thread-lock sealing lock. Block off the vacant terminals to
protect from dust and moisture penetrating inside the inverter.
Step 7
Seal the gaps between the cable and the gland inside the lower part of
the cabinet with duct seal. If there is no other connection procedure,
reassemble and connect the front cover of the connection cabinet.
Seal the gap between the cable and the gland with duct seal or other
suitable materials to prevent the entry of foreign bodies or moisture
and ensure long-term and normal operation of the inverter.
Step 8 Connect the communication devices. Refer to other manuals and
documents if there are other devices.
Step 9
Confirm the communication connection and set the communication
parameters.
If more than one inverter is connected to PC or Logger, please set the
communication parameters from the APP interface.
5.6 Configurable Dry Contact
There are Fault Alarm dry contacts and Local Stop dry contacts located on the
configurable circuit board.