Installation manual
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(3) External input specifications
(A) For level signal
1 When the emergency stop/normal signal is selected, the status will switch 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 are stopped will remain off after the emergency stop is cancelled.
Start up each indoor unit to manually 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 local remote controller operation is prohibited, the ON/OFF operation mode and temperature setting operations from the
local remote controller will be prohibited.
3 Set the pulse width (contact ON time) to 0.5 to 1 sec.
(4) Recommended circuit
(A) For level signal
(B) For pulse signal
1 The contact relay, DC power source, extension cable, etc., must be prepared on site.
2 The connection cable can be extended up to 10m (32 ft). Use a 0.3mm
2
(AWG 22) or larger wire.
3 Strip the extra cable near the connector, and insulate the exposed section securely with tape, etc.
2. External signal output function
* External signal output requires the external I/O adapter PAC-YG10HA (sold separately).
(1) External output
When one or more air conditioners are operating, the “ON” signal will be output, if a malfunction occurs in one or more air
conditioners, the “Malfunction” signal will be output.
(2) External output specifications
CN5 Lead wire Emergency stop/normal level signal ON/OFF, level signal ON/OFF, prohibit/enable pulse signal
No.5 Orange Emergency stop/normal input ON/OFF input ON input
No.6 Yellow Not used Not used OFF input
No.7 Blue Not used Not used Local remote controller operation prohibit input
No.8 Gray Not used Not used Local remote controller operation enable input
No.9 Red External DC source “+ 12VDC” or “+ 24VDC”
CN5 Lead wire Details of each terminal
No.1 Green Common (External ground)
1 The “ON” signal is output even while the “Malfunction” signal
is being output.
No.2 Black ON/OFF
No.3 Brown Malfunction/normal
CN5
Red
Orange
Max.10m
(32 ft)
X1
X1
Run/stop or
Emergency stop
Power supply
(12VDC or 24VDC)
This unit
9
8
7
6
5
1
Use relays X1, X2, Y1, and Y2 that meet
the following specifications.
Contact rating
Rated voltage >=12VDC
Rated current >= 0.1A
Minimum applicable load =< 1mA at DC
CN5
9
8
7
6
5
1
Power supply
(12VDC or 24VDC)
Red
Gray
Blue
Yell ow
Orange
Max.10m
(32 ft)
This unit
Run Stop
Prohibit
Enable
X1 X2 Y1 Y2
Y2
Y1
X2
X1