External Input / Output; 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.

7-1 External input function

(1) The function of external input
• Emergency stop/normal operation, ON/OFF, local remote control prohibit/permit can be controlled for all air
conditioners being controlled with a non-voltage contact signal input from an external input source. (Select with
the dip switches)
• The condition of external input signal is displayed on the operation setting screen for each group.
No. Function of external input signal
1 External input signal not used
Perform emergency stop with level signal
2
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
1 Level signal
2
Pulse signal
(3) Specification of external input interface
CN2 Lead wire
No.5 Orange Emergency stop/normal input
No.6 Yellow
No.7 Blue
No.8 Gray
No.9 Red Common(DC12V or DC24V)
(A) Level signal
When the level signal is selected, the operation (only ON/OFF operation) for the central controller and the
1
local remote controller are prohibited (except during normal operation).
2
When 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.
When ON/OFF input signal is selected, the status will be changed from OFF to ON when the external input
3
signal contact turns OFF to ON, and will be changed from ON to OFF when the external input signal contact
turns ON to 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.
ON/OFF level signal
ON/OFF input
Not used
Not used
Not used
-38-
Remarks
ON/OFF , prohibit/premit
pulse signal
ON input
OFF input
Local remote controller
prohibit input
Local remote controller
permit input