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7-2-8. Compressor operation output
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.
<Electrical Rating>
24 V or less (AC / DC), 10 mA or more, 1 A or less (non-conductive load)
C2
Connection cable 2
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
Outdoor unit
Locally procured
Outdoor unit
interface PCB
Shield
wire
Optional PCB
(See “NOTE”)
Model featuring three
compressors
Model featuring
two compressors
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