Applied Control Of Indoor Unit - Toshiba MMD-AP0726HP-E Service Manual

8-5. Applied control of indoor unit

Control system using Remote location ON/OFF control box (TCB-IFCB-4E2)
Wiring and setting
• In the case of group control, the control system functions as long as it is connected to one of the indoor units
(control P.C. board) in the group. If it is desired to access the operation and error statuses of other units,
relevant signals must be brought to it from those units individually.
Control items
(1) Start / Stop input signal
(2) In-operation signa
(3) Alarm signal Output
Wiring diagram of control system using Remote location ON/OFF control box (TCB-IFCB-4E2)
IFCB4E2: No-voltage ON / OFF serial signal
Input
No-voltage contact (in-operation and alarm indication)
Output
Contact capacity: Max. AC 240 V, 0.5 A
Indoor control P.C. board
Remote controller disabling / ending input
In-operation signal output
AMP Air Conditioning
Start / stop of unit
Output present while unit in normal operation
present while alarm (e.g. serial communication error or operation of protective
device for indoor / outdoor unit) being activated
Start/Stop input 1
COM (GND) 2
3
4
COM (+12V) 5
Alarm signal output
6
CN61
T10
(Yellow)
TCB-IFCB-4E2
1
2
3
4
CN06
1
2
3
4
5
6
CN13
Power supply 220-240V
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ON side
Start signal input
OFF side
Stop signal input
COM
In-operation signal output
Alarm signal output