External Input/Output Specifications - Mitsubishi Electric PFD-P250VM-E Service Manual

7-5.External input/output specifications

(1) Input/output specifications
Input
Usage
Function
Start/stop Turning
ON/OFF
the indoor
unit
Dehumidi- Sending a
fication command
signal to perform
dehumidifi-
cation with
priority
1 Use minute-current contact (DC12V 1mA)
Output
Function
Obtaining signals indicating
No.1
operation status of indoor units
Operation
in each refrigerant circuit.
Status
Obtaining signals indicating
No. 1
error status of indoor units in
Error Status
each refrigerant circuit.
Obtaining signals indicating
No. 2
operation status of indoor units
Operation
in each refrigerant circuit.
Status
Obtaining signals indicating
No. 2
error status of indoor units in
Error Status
each refrigerant circuit.
20HP only
Signals
· Pulse [Factory setting: Dip SW1-9 ON]
(a-contact with voltage/without
voltage) 1
<With voltage>
Power Source: DC12~24V
Electrical Current:
Approximately 10mA (DC12V)
<Standard Pulse>
over 200ms over 200ms
(Pulse powering time) (Pulse interval)
· Level [Dip SW1-9 OFF]
Level
Refer to the wiring diagram
<Dehumidification command> shown
on the next page.
Usage Signal
Relay a-contact
output
DC 30V or
AC 100V/200V
Standard Current :
1A
Minimum Current :
1mA
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