Communication Cable Connection - CanadianSolar CSI-75K-T40001-E Quick Installation Manual

L2=L1+3mm
8.4 ≤ D ≤ 12.5mm

4.3 Communication Cable Connection

Opening the Wiring Compartment
4.3.1
Step 1 Loosen four screws on the front cover of the wiring compartment with screwdriver T30.
Step 2 Open the wiring compartment.
Step 3 Loosen two screws on the communication board, and remove the protection cover
Close the wiring compartment in reverse order after completing wiring operations.
Note：
M6
T30
4.3.2 Communications Interface Description
The following figure shows the position of the communication wiring board in the inverter as well as the terminals equipped for the
wiring board.(Note: The communication wiring board shown in the enlarged figure below is placed horizontally, while the
communication board in the actual working state is placed vertically.)
4.3.3 RS485 Communication
The inverter is equipped with four groups of RS485 communication port for external communication connection, which are
RS485_1, RS485_2, RS485_3, and RS485_4.
The terminal block interface and RJ45 interface have the same function with only wiring manner different. Select either
interface for cable connection.
4.3.3.1 Single-inverter communication system
In case of a single inverter, select either terminal block interface (RS 485-1, and RS 485-3) or RJ45 interface(C1~C8) to
connect.
L1
FIG 4-2 Install ground cables
FIG 4-3 Open the Wiring Compartment
L3=2L1
M8
8N.m
M4
PH2
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