Hitachi PSC-A32MN - External Output Function; Connection Procedure

5.4.4.2 External Output Function
1 All Run Output
External output of indoor unit operation signal to the target group. The operation signal is output even if one indoor unit in the
target group is in operation.
2 External Output Alarm
External output alarm signal of indoor units to the target group. The alarm signal is output even if one indoor unit abnormality
occurs in the target group.
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 Input Terminal: Non-voltage contact (normal open) for demand signal Input DC12V, 10mA.
The contact can be switched.
Pulse width is 300 ms or more for pulse signal input.
 Output Terminal: Contact (voltage is applied) for signal Output DC12V.
Recommended Relay: MY Relay manufactured by Omron Corporation (Do not use a diode built-in type).
 Input/Output connection: using accessory connector cord.
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Connection procedure
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Cut out this portion
Protect the cut part using insulation tape
Insulation tape
Cut part
2 Follow one of the procedures below in order to connect a relay or a timer with a locally supplied cord.
a. Soldering
Twist and solder copper wires together and insulate them by winding plastic tape around.
b. Caulking with closed-end connector accessory
Insert the closed-end connector after twisting and soldering copper wires together, then caulk with a clamping tool.(pull the
cord to check the tightness of the connection)
Close-end Connector
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Copper wires
ENGLISH
Operation
PMML0332A rev.0 - 05/201571