Mitsubishi Electric AG-150A Instruction Book page 14

4-2-2-3 External Input Setting
In the External Input Setting menu, set the AG-150A external input function. By using external input functions,
it is possible to stop and run multiple air conditioners connected to the AG-150A via the separately sold
external I/O adapter for AG-150A (Model: PAC-YG10HA) and external power supply using level signals and
pulse signals.
Note: If PAC-YG50ECA Expansion Controllers are connected, Expansion Controller system selection buttons will appear. Select the
desired Expansion Controller, and make the settings for each system. Make the settings with the Expansion Controllers
properly connected. Connect the external input signal wires to each controller's external input terminal.
(1) Select [Not in use] when not using the external input function.
(2) Selecting [Emergency stop (Level signal)] makes it possible to stop multiple units by using a level signal.
While this stop operation is being performed, operations such as running or stopping units are prohibited
on the AG-150A unit or remote control.
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Connection to AG-150A (CN5)
(3) Selecting [ON/OFF (Level signal)] makes it possible to run or stop multiple units using a level signal. In this mode,
all air conditioner units connected to the AG-150A will be run or stopped and run/stop operations will be prohibited
on the AG-150A unit or remote control.
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Connection to AG-150A (CN5)
Emergency stop/normal
DC 12V
Run/Stop
DC12V
Contact ON
Emergency
Contact OFF
Normal
Stop
Contact ON
Contact OFF
Stop
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Normal
Run Stop