External Signal Output Function - Mitsubishi Electric GB-50A Installation Manual

2. External signal output function

* External signal output requires the external I/O adapter (Model: PAC-YG10HA) sold separately.
(1) External output
When one or more air conditioners are running, the "ON" signal will be output and if a malfunction occurs
in one or more air conditioners, the "Malfunction" signal will be shown.
(2) External output specifications
Lead wire
CN2
Green
No.1
Black
No.2
Brown
No.3
Red
No.9
(3) Recommended circuit example
1 Each element will turn on while ON operation or a malfunction occurs.
2 The connection cable can be extended up to 10m (32 ft).
3 The relays, lamps, diodes and extension cables, etc, must be prepared separately at the site.
Details of each terminal
Common (External ground)
ON/OFF
Malfunction/normal
Common (External power supply) (*1)
Use Z1 and Z2 relays having the following specifications.
Operation coil
Rated voltage
Power consumption
(*1) Prepare a power supply separately according to the relay
being used. (DC12V or DC24V)
(*2) Always insert a diode on both ends the relay coil.
18
1 "ON" signal and "Malfunction"
signal will both be shown.
: DC12V, DC24V
: 09.W or less