Compressor Operation Output - Toshiba MMY-MAP0804HT8JP Service Manual

6-8-8. Compressor Operation Output

Outdoor unit
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>
220-240 VAC, 10 mA or more, 1A or less
24 VAC, 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
Elapsed operation counter 3
CTR3
K1,K2,K3 Relay
Operation indication lamp
L1,L2,L3
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
Optional PCB
Outdoor unit
interface PCB
C2
SW16
PJ20
CN514
ON
OFF
1 2 3 4
Model featuring three
compressors
1 2 3
OUTPUT1 OUTPUT2 OUTPUT3
Locally procured
(See "NOTE")
TB1
1 CTR1
K1
OUTPUT1
2
CTR2
3
K2
OUTPUT2
4
CTR3
5
K3
OUTPUT3
6
Shield
wire
Model featuring
two compressors
1 2
OUTPUT1
OUTPUT2
– 114 –
L1 PS
L2 PS
L3 PS