Mitsubishi G-50A Specifications download pdf (Page 39)

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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-

nal

Perform ON/OFF operation, prohibit/per-

mit operation with pulse signal

Function

No.6 No.7

OFF OFF

OFF ON

ON OFF

ON ON

Remarks

During emergency stop, only ON/OFF of the central

controller and local remote controller's operation

will be prohibit.

Only the ON/OFF operation of the central controller

and the local remote controller will be prohibit.

Set the pulse width while the contact is ON to 0.5

to 1.0 second.

(2) Level signal and pulse signal

1Level signal

2Pulse signal

(3) Specification of external input interface

CN2

No.5

No.6

No.7

No.8

No.9

Lead wire

Orange

Yellow

Blue

Gray

Red

Emergency stop/normal

level signal

Emergency stop/normal input

Not used

Common (DC12V or DC24V)

ON/OFF level signal

ON/OFF input

Not used

ON/OFF, prohibit/permit

pulse signal

ON input

OFF input

Local remote controller

prohibit input

Local remote controller

permit input

(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.

CONTACT ON CONTACT ON

CONTACT ON

CONTACT OFF

OFF OFF

Signal 1 (ON)

Signal 2 (ON)

0.5 ~ 1.0sec

Emergency

Normal

stop Normal

(Prohibit/permit is the same)

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Mitsubishi G-50A Specifications Page 39

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