En-25
External input terminal
6. 6. 2.
Service parts : EXTERNAL INPUT WIRE A (9368777005)
Setting to low noise mode, cooling priority/heating priority selection, outdoor unit operation peak control setting,
•
emergency/batch stop and electricity meter pulse are possible from the outside.
Except for wattmeter pulse reception (CN135) among external input terminals, only the Master unit is effective.
•
Wiring method and speci
fi
cations
A twisted pair cable (0.33mm
*
2
(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.
*
Connected unit
Connected unit Connected unit Connected unit Connected unit
CN131
(Yellow)
CN132
(Green)
CN133
(White)
CN134
(Red)
CN135
(Orange)
P.C.B
Input1
Input2
Input3
Input4
Input5
Operation behavior
Each input terminal works as follows.
Connector
Input signal
Status
Outdoor unit
Master
Slave
CN131 (Yellow)
OFF
Normal operation
O
°
ON
Low noise mode operation
CN132 (Green)
*1
OFF
Cooling priority
O
°
ON
Heating priority
CN133 (White)
OFF
Normal operation
O
°
ON
Outdoor unit operation peak control
CN134 (Red)
OFF
Normal operation
O
°
ON
Batch stop or Emergency stop operation *2, *3
CN135 (Orange)
*4
No pulse
No information from electricity meter
O
O
Pulse
Power usage information from electricity meter
Slave unit can connect only input5 (CN135).
The operations of each input terminal and the selection of function are set with the push switch on the circuit board of
outdoor unit. About the setting, please refer to 7.4. Push switch setting.
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 V-II does not guarantee the regulations of each country. For this
reason, suf
fi
cient 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.
9378945029-03_IM_EN.indb 25
9378945029-03_IM_EN.indb 25
2011-9-20 16:25:58
2011-9-20 16:25:58
