Hisense HCPC-H2M1C Installation Instructions Manual page 16

2 Installation construction
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.
Distinguish
Power supply
cable
Or use MINI USB 5V
Ground wire
Communication
line
Computer for management
Table 2.2 Installation process
Place to Connect Sequence
DC 12V
——
Computer for
management/PLC
(LAN)
Air conditioner
(H-NET)
/PLC
(RS-485)
Wiring method
①
①
——
②
③
④
1
A RS-485 B
⑤
A
- 14 -
Plug the 12V power adapter to
the DC port of Modbus adapter
as shown in left figure.
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.
Connect with computer for
management or HUB, use
through network cable, insert
and lock tightly.
· No polarity, circular terminal
connects to fastening torque
0.4N·M.
2
· Please connect H-NET wiring
to the H-NET terminal of the
air conditioner.
· 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
B
management or PLC.
Remark
——