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

(3) External input specifications
CN2 Lead wire Emergency stop/normal level signal
No.5 Orange Emergency stop/normal input
No.6 Yellow Not used
No.7 Blue Not used
No.8 Gray Not used
No.9 Red
(A) For level signal
1 When the emergency stop/normal signal is selected, the status will change from normal to emergency stop when the
external input signal contact changes from OFF to ON, and will change from emergency stop to normal when the contact
changes from ON to OFF. Air conditioning units that came to an emergency stop will remain stopped after the emergency
stop is cancelled. Manually start up each unit to restore the previous operation.
2 When the ON/OFF signal is selected, the status will change from OFF to ON when the external input signal contact
changes from OFF to ON, and will change from ON to OFF when the contact changes from ON to OFF.
(B) For pulse signal
1 Even if the ON signal is input during ON, the status will remain ON.
2 If the local remote controller is prohibited, the ON/OFF operation mode and temperature setting operations by the local
remote controller will be prohibited.
3 Set the pulse width (contact ON time) to 0.5 to 1 sec.
(4) Recommended circuit example
(A) For level signal
This unit
(B) For pulse signal
CN2
9
8
7
6
5
1
This unit
1 The contact relay, DC power source, extension cable, etc., must be prepared separately at the site.
2 The connection cable can be extended up to 10m (32 ft). (Use a 0.3mm
3 Strip the extra cable near the connector, and securely insulate the exposed section with tape, etc.

2. External signal output function

* External signal output requires the external I/o adapter (Model: PAC-YG10HA-E) 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 output.
(2) External output specifications
CN 2 Lead wire
No.1 Green Common (External ground)
No.2 Black ON/OFF
No.3 Brown Malfunction/normal
External DC source "+ DC12V" or "+ DC24V"
CN2
Red
9
8
7
6
Orange
5
1
Max.10m
(32 ft)
Power supply(*1)
(DC12V or DC24V)
Red
Gray
Y2
Blue
Y1
Yellow
X2
Orange
X1
Run Stop Prohibit Enable
Max.10m
(32 ft)
Details of each terminal
ON/OFF, level signal
ON/OFF input
Not used
Not used
Not used
X1
Run/stop or
Emergency stop
X1
Power supply(*1)
(DC12V or DC24V)
X1 X2 Y1 Y2
1 The "ON" signal is output even while the "Malfunction" sig-
nal is being output.
– 8 –
ON/OFF, prohibit/enable pulse signal
ON input
OFF input
Local remote controller operation prohibit input
Local remote controller operation enable input
Use relays X1, X2, Y1, and Y2 that meet the
following specifications.
Operating coil
Rated voltage : DC12V, DC24V
Power consumption: 0.9 W or less
(*1) Prepare a power supply separately accord-
ing to the relay being used. (DC12V or
DC24V)
2 (AWG 22) or larger wire.)