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Input
Function
Application
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OFF the indoor
unit
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Electrical Current:
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over 200ms
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over 200ms
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Short: operate
Open: stop
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tion signal
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mand to perform
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with priority
Level
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cation command>.
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Output
Function
Application
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Operation
status
External output of operation
status signal for each coolant
circuit of indoor unit.
Relay “a” contact output
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Contact rated current: 1 A
Contact minimum load: 10 mA
Fault
External output of fault signal
for each coolant circuit of
indoor unit.
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A
With-voltage input
B
External power supply
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No-voltage input
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Common
F
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Relay contact output
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Display power supply
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Operation status
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Fault
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Connector connection
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Wiring distance 100 m or less.
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With-voltage input
External power
supply
Pulse input of start or stop
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No-voltage input
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Contact: Minimum applicable load DC 12 V 1 mA
Contact rating DC 12 V 0.1 A and over
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Relay contact output
Display power
supply
DC30 V 1 A or less
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Operation status
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Fault status
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Wiring Method
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2. When using the external output function, connect the signal lines to the ex-
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Peel the cover of wires and connect to the terminals.
3. When using the external input function, connect the signal lines to the exter-
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tion. Peel the cover of wires and connect to the terminals.
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Site wiring
B
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transmission line wiring holes.*1
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power supply wiring holes.*2
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sult in mis-operation of the unit due to noise.
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result in mis-operation of the unit due to noise.
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External output functions
Product name
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External output
signal lines
Use plastic-sheathed cord or cable.
Wiring type: CV, CVS, or equivalent.
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2
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Display lamps
etc.
No-voltage “a” contacts
DC30 V 1 A or less
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External input functions
Product name
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External input
signal lines
Use plastic-sheathed cord or cable.
Wiring type: CV, CVS, or equivalent.
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2
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Switches
No-voltage contacts
