Fujitsu AB* A12GATH, Design & Technical Manual

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1-1-1. EXTERNAL INPUT
Setting to "Low noise mode", "Cooling priority/heating priority selection", "Outdoor unit
operation peak control", "Emergency/batch stop" and "Electricity meter pulse" are possible
from the outside.
„ „
WIRING METHOD AND SPECIFICATIONS
*A twisted pair cable (22AWG) should be used. Maximum length of cable is 150m.
* Use an external input and output cable with appropriate external dimension, depending on the
number of cables to be installed
*For each input, pin No.1 is of positive polarity and pin No.2 is of ground level.
1 2 1 2 1 2 1 2 1 2
CN131
(Yellow)
Input1
connected unit connected unit connected unit connected unit connected unit
Input2 Input3 Input4 Input5
CN132
(Green)
CN133
(White)
CN134
(Red)
CN135
(Orange)
P.C.B
„ „
OPERATION BEHAVIOR
Connector Input signal Status
Outdoor unit
Master Slave
CN131 (Yellow)
OFF Normal operation
○

ON
Low noise mode operation
CN132 (Green)
*1
OFF Cooling priority
○

ON
Heating priority
CN133 (White)
OFF Normal operation
○

ON Outdoor unit operation peak control
CN134 (Red)
OFF Normal operation
○

ON Batch stop or Emergency stop operation *2, *3
CN135 (Orange)
*4
No pulse No information from electricity meter
○ ○
Pulse
Power usage information from electricity meter
Slave unit can connect only input5 (CN135).
Note :
*1: The "external input priority mode" must be set by pressing push button on PC board of outdoor
unit.
*2: Batch stop or Emergency stop pattern can be selected by outdoor unit PC board push button.
*3: The emergency stop function mounted in the equipment does not guarantee the regulations of
each country. For this reason, sufficient checking is necessary regarding use.
Especially, since the fact that the equipment may not be emergency-stopped in the case of
breaking of the wiring to the external input terminals and communication line, communication
error due to noise, VRF external input circuit trouble, etc. must be considered, the provision of
double measures that add direct interruption of the power supply by switch, etc. is recommended
as a precaution.
*4: Pulse input to CN135 must be width 50ms or more, and must be interval 50ms or more.
- (08 - 04) -
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T