No. Name Description
All indoor units are controlled by no-powered external input (leveled/pulsed)
Digital input DI-1 according to the option switch setting.
Load : 12VDC/5mA
All wired/wireless remote controllers for indoor units are permitted/prohibited
Digital input DI-2
by no-powered external input (leveled/pulsed) according to the option switch
setting. Also all indoor units are stopped by incoming pulsed input.
Load : 12VDC/5mA
Outputs 12V if at least one indoor unit operates.
Digital output DO-1 Output capacity : 12VDC/500mA
(External circuitry can be realized for display or control using the 12V output)
Outputs 12V if there is an error on the indoor or outdoor unit or if
communication error occurs.
Digital output DO-2 Output capacity : 12VDC/500mA
(External circuitry can be realized for display or control using the 12V output)
It’s equivalent to the ‘Error’ LED on the DMS display.
1
2
3
4
1
2
3
4
External input/output ports
Option switch
05-3_control systems(082~141) 3/6/08 14:03 Page 87
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