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2.3.2 About Wiring Connection
(1) For wiring connection, please ensure to cut off the main power supply and the power supply of surrounding machine.
(2) Please connect to each wiring according to Table 2.2, the [sequence] column in the table shall be corresponding to the
[sequence] in Table 2.1.
Note: do not remove the cover of unused connectors, if removed, it may cause failure.
Table 2.2 Installation process
Distinguish Place
to
Connect
Sequence
Wiring method
Remark
Power supply
cable
DC 12V
①
Plug the 12V power adapter to
the DC port of Modbus adapter
as shown in left figure.
Or use MINI USB 5V
①
Insert MINI USB cable to the
USB port of Modbus adapter as
shown in left figure. The other
end of USB use 5V power
supply.
Ground wire
——
②
——
——
Communication
line
Computer for
management/PLC
(LAN)
③
Connect with computer for
management or HUB, use
through network cable, insert
and lock tightly.
Air conditioner
(H-NET)
④
· No polarity, circular terminal
connects to fastening torque
0.4N·M.
· Please connect H-NET wiring
to the H-NET terminal of the
air conditioner.
Computer for management
/PLC
(RS-485)
⑤
· DC 5V, A-A, B-B, circular
terminal connects to the
fastening torque 0.4N·M.
· Please connect the RS-485
wiring to the computer for
management or PLC.
A RS-485 B
A B
1 2
2 Installation construction