6 Electrical Connection
User Manual
36
RJ45 Connection
Step 1
Lead Network cable through communication cable gland to the
configuration circuit board.
Step 2
Use the Ethernet crimper to crimp the cables and connect cables to
RJ45 plug according to TIA/EIA 568B.
Step 3
Connect the RJ45 plug into the RS485 in/RS485 out terminal on the
configuration circuit board.
Step 4
According to the position of the inverter (refer to the prior section), repeat
step1…3 to connect the other Network cables to the RS485 out/RS485
in terminal on the configuration circuit board.
Step 5
Pull cables outwards to confirm whether they are fastened firmly.
Step 6
Tighten the tread-lock sealing lock. Block off the vacant terminals to
protect the inverter’s internal from dust and moisture.
Step 7
According to the position of the inverter (refer to the prior section) switch
ON or OFF the terminating resistor.
Step 8
If there is no other connection procedure, recover and fix the front cover
of the connection cabinet.
Step 9
As for the wires which connect to the logging devices, use the Ethernet
wire stripper to strip the insulation layer and connect the RS485 A and B
cables (3 and 6) to data logging device or RS485-232 converter.
Communication terminal definition is referred to the device manual.
Step 10
Verify the communication connection and configure the
communication parameters.
If there is more than one inverter to communicate with a PC or a data
logger, it is crucial to configure the communication parameters of
each inverter. See “10.12 Communication Parameters Setting”.
SolarInfo logger and RS485-232 converter are optional parts and can
be ordered from Sungrow.
