Toshiba A03-009, Service Manual

Page: 52 / 219

51
5-6. Applied control of indoor unit
Control system using remote controller interface (TCB-IFCB4E2)
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.
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Control items
(1) Start / Stop input signal Start / stop of unit
(2) In-operation signal Output present while unit in normal operation
(3) Error signal Output present while alarm (e.g. serial communication error or operation of protective
device for indoor / outdoor unit) being activated
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Wiring diagram of control system using remote controller interface (TCB-IFCB4E2)
Input IFCB4E2: No-voltage ON / OFF serial signal
Output No-voltage contact (in-operation and error indication)
Contact capacity: Max. AC 240 V, 0.5 A
ON side
Start signal input
OFF side
Stop signal input
COM
In-operation signal output
Error signal output
Power source 220-240 V
Indoor control P.C. board
Start / stop input
COM (GND)
Remote controller disabling / enabling input
In-operation signal output
COM (+12V)
Error signal output
(yellow)