19
1. External signal input function
* External signal input requires the external I/O adapter (Model: PAC-YG10HA), sold separately.
Some parts, such as 12V DC or 24V DC power supply and relays, must be field-supplied.
(1) External input
Emergency stop/normal, run/stop and prohibit/enable of local remote controller operation can be controlled
for all air conditioners on a system by using a voltage (12V DC or 24V DC) contact signal from an external
source. (Select with the function select setting using the Initial Setting Web).
(2) Level signal and pulse signal (12V DC or 24V DC)
No.
External signal input function
Remarks
1
Do not use external input signal (factory
setting)
2
Execute emergency stop/normal with
level signal
Local remote controller ON/OFF operation, and
the controller ON/OFF operation and prohibit/
enable change operations will be prohibited
during emergency stop.
3
Perform ON/OFF with level signal
Local remote controller ON/OFF operation, and
the controller ON/OFF operation and prohibit/
enable change operation will be prohibited.
4
Perform ON/OFF, prohibit/enable with
pulse signals
Set the pulse width while the contact is ON to 0.5 to
1 sec.
10
External Input/Output Usage
CN2
(A) Level signal
Contact ON
Contact OFF
Contact ON
Contact OFF
Contact ON
Contact OFF
Contact ON
Contact OFF
Signal 1 (run)
Signal 2 (stop)
(Example) for ON/OFF
(B) Pulse signal
Stop
Run
Stop
Normal
Normal
Emergency
stop
0.5 to 1 sec
0.5 to 1 sec
OFF
OFF
ON
* The prohibit/enable input is the same.
