External Input/Output Function; External Input Function - Mitsubishi Electric G-50A Instruction Book

7. External input/output function

* External signal input requires the external I/O adapter (Model: PAC-YG10HA-E) sold separately.
* Refer to Instalation Manual for detail.

7 - 1 External input function

(1) The function of external input
• Emergency stop/normal, run/stop and prohibit/enable of local remote controller operation can be controlled for all
air conditioners by using a voltage (DC12V or DC24V) contact signal from an external source. (Select with the
function select setting.)
No. Function of external input signal
1 External input signal not used
2 Perform emergency stop with level signal
Perform ON/OFF operation with level sig-
3
nal
Perform ON/OFF operation, prohibit/per-
4
mit operation with pulse signal
(2) Level signal and pulse signal
1Level signal
CONTACT ON
CONTACT OFF
2Pulse signal
Signal 1 (ON)
CONTACT ON
CONTACT OFF
Signal 2 (ON) CONTACT ON
CONTACT OFF
(3) Specification of external input interface
CN2 Lead wire
Emergency stop/normal input
No.5 Orange
No.6 Yellow
No.7 Blue
No.8 Gray
No.9 Red Common (DC12V or DC24V)
(A) Level signal
1When the level signal is selected, the operation (only ON/OFF operation) for the central controller and the
local remote controller are prohibited (except during normal operation).
2When the emergency stop/normal operation signal is selected, the status will be changed from normal oper-
ation to emergency stop when the external input signal contact turns OFF to ON, and will be changed from
emergency stop to normal operation when external input signal contact turns ON to OFF.
Air conditioning units that came to an emergency stop will remain stopped after the emergency stop is can-
celled. Manually start up each unit to restore the previous operation.
3When ON/OFF input signal is selected, the status will be changed from OFF to ON when the external input
signal contact turns OFF to ON, and will be changed from ON to OFF when the external input signal contact
turns ON to OFF.
OFF ON
0.5 ~ 1.0sec
OFF
Emergency stop/normal
level signal
Not used
Not used
Not used
Function
No.6 No.7
OFF OFF
During emergency stop, only ON/OFF of the central
controller and local remote controller's operation
OFF ON
will be prohibit.
Only the ON/OFF operation of the central controller
ON OFF
and the local remote controller will be prohibit.
Set the pulse width while the contact is ON to 0.5
ON ON
to 1.0 second.
CONTACT ON
CONTACT OFF
OFF
0.5 ~ 1.0sec
ON OFF
ON/OFF level signal
ON/OFF input
Not used
Not used
Not used
– 38 –
Remarks
Emergency
Normal
stop
(Prohibit/permit is the same)
ON/OFF, prohibit/permit
pulse signal
ON input
OFF input
Local remote controller
prohibit input
Local remote controller
permit input
Normal