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6-8-8. Compressor Operation Output : TCB-PCIN4E
[Only supported by SHRM-i and SMMS-i (4 series)]
<Electrical Rating>
220-240 VAC, 10 mA or more, 1A or less
24 VAC, 10 mA or more, 1 A or less (non-conductive load)
OUTPUT1
CN514
PJ20
OUTPUT2
OUTPUT3
TB1
1
2
5
6
4
3
C2
K1
K2
K3
1234
ON
OFF
SW16
CTR1
CTR2
CTR3
L1 PS
L2 PS
L3 PS
Optional PCB
Locally procured
(See “NOTE”)
Outdoor unit
Outdoor unit
interface PCB
Shield
wire
1 2 3
OUTPUT1 OUTPUT2 OUTPUT3
1 2
OUTPUT1
OUTPUT2
Model featuring three
compressors
Model featuring
two compressors
C2
Connection cable 2 (CN514)
CN514
Interface-side connector (green)
CTR1
Elapsed operation counter 1
CTR2
Elapsed operation counter 2
CTR3
Elapsed operation counter 3
K1,K2,K3
Relay
L1,L2,L3
Operation indication lamp
OUTPUT1
Compressor 1 in-operation output terminal
OUTPUT2
Compressor 2 in-operation output terminal
OUTPUT3
Compressor 3 in-operation output terminal
PJ20
Optional P.C. board-side connector
PS
Power supply unit
TB1
Terminal block
Operation
When a compressor is in operation, a relay connected to the output terminal assigned to it is turned on
(closed).
When it is at rest, the relay is turned off (open).
The output terminals are named OUTPUT1, OUTPUT2 and OUTPUT3 from left to right when facing the front
of the outdoor unit, as shown in the diagram.
Note 1: Output Relay (K1, K2, K3) Contact Specifications
• Output terminals (OUTPUT1, 2, 3) must satisfy the following electrical rating.
• When connecting a conductive load (e.g. relay coil) to loads K1, K2 and K3, insert a surge killer CR (for an AC
power supply) or a diode for preventing back electromotive force (for a DC power supply) on the bypass circuit.
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