5 Optional functions
Indoor units input and output signals
SMGB0137 rev.0 - 05/2021
103
5
Input in setback mode
1 Press and hold “Menu” and “Back/Help” on the wired controller simultaneously for at least 3 seconds during the
normal mode (unit stoppage). The “Test Run” menu is displayed. Select “Input/Output” from the “Test Run” menu and
press “OK”.
2 Select either “Input 1” or “Input 2” and change the setting to “09”.
3 Build a circuit as shown below. On the indoor unit PCB, use the input terminal (CN3) to receive external signals.
?
N O T E
When a card key is removed, the switch SS3 is turned OFF. It gives no voltage on a coil of the auxiliary relay “X1” and turns OFF the
contact “X1”. This starts the setback operation.
SS3
X1
CN3
X1
3
2
1
2
1
3P Connector
Indoor unit PCB
SS3: Card key
Power
supply
Control circuit
Wiring diagram example of Setback operation by external input
(Card key input is set to terminals 1 and 2 of CN3)
?
N O T E
• After a power supply is turned ON, picking up a signal is not available for 10 seconds due to the initialization of the component. Wired
controller is required for this function.
• When using a wireless controller, or not using a wired controller, the function does not work.
• To simultaneously apply constraints of the setback operation to multiple Indoor units, connect transition wiring to the wired controller
and enter a signal to the representative unit in the setback.
• In case that a transition wiring connection is not applied to the simultaneous twin/triple/quad operations, send out a signal to the main
unit.
Specifications on required components for Setback operation
Component
Manufacture or Specification
Remarks
Changeover Switch (SS2, SS3)
Manual Type, Card Key
Voltage 220-240V
Auxiliary Relay (*)
OMRON Mini Power Relay
Model: MY1F/2F or Equivalent
3P Connector Cord (*)
Optional Part PCC-1A
(Connectable to JST Connector XARP-3), 12V
Five Cords with Connectors as One Set
Cord (Indoor)
Low Voltage
0.3 mm
2
Less than 12V
220-240V Class
0.5 to 0.75 mm
2
-
Cord (Outdoor)
Low Voltage
0.5 to 0.75 mm
2
Less than 12V
220-240V Class
2 mm
2
-
?
N O T E
• (*) These parts are compatible with optional remote control adopter PSC-5RA.
• Make the wires CN3 as short as possible. Do not install the wires along the 220V power line. Install them more than 30cm away from
each other. (Intersecting them is acceptable.)
• If the wires are installed along the power line, comply with the following points to prevent noise.
- Pass either the low voltage wire or 220-240V power line through a metal conduit tube, then earth one end.
- Use a shielded wire for a low voltage wire and ground one end.
• The maximum wiring length is 70m.
• Since automatic operation by remote control switch is unattended operation, explain necessity of electric leakage breaker or smoke
detector near indoor unit besides monitoring by “4.5.6 (2) Picking Up Alarm Signal” as safety matters.
