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Input 1
Input 2
CN131
CN132
(Yellow)
(Green)
P.C.B
connected unit connected unit connected unit connected unit connected unit
Operation behavior
Each input terminal works as follows.
Input
Connector
signal
OFF
Input 1
CN131 (Yellow)
ON
OFF
Input 2
CN132 (Green) *1
ON
OFF
Input 3
CN133 (White)
ON
OFF
Input 4
CN134 (Red)
ON
No pulse
Input 5
CN135 (Orange) *4
Pulse
Slave unit can connect only input5 (CN135).
The operations of each input terminal and the selection of function are set with the
push button on the PC board of outdoor unit. About the setting, please refer to "7. 4.
Push button 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 equipment does not guarantee
the regulations of each country. For this reason, suffi cient checking is neces-
sary 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 com-
munication 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.
6. 7. 3.
External output terminal
• You can detect the operation condition of outdoor unit and the abnormal situation
of both indoor and outdoor unit.
• The external output terminal is only valid for Master Unit.
Wiring method and specifi cations
Error status (Master unit only)
This output indicates the outdoor unit and connected indoor unit's "Normal" or "Error"
status.
Operation status (Master unit only)
This output indicates the outdoor unit's "Operation" status.
Connector
Output voltage
CN136 (Black)
DC 12 to 24 V
CN137 (Blue)
DC 12 to 24 V
Input 3
Input 4
Input 5
CN133
CN135
CN134
(Orange)
(White)
(Red)
Outdoor unit
Status
Master Slave
Normal operation
O
Low noise mode operation
Cooling priority
O
Heating priority
Normal operation
O
Outdoor unit operation peak
control
Normal operation
O
Batch stop or Emergency stop
operation *2, *3
No information from electricity
meter
O
Power usage information from
electricity meter
Status
0 V
Normal
Error
0 V
Stop
Operation
P.C.B
+
CN136
(Black)
1
or CN137
2
(Blue)
*7
* 5: Provide a DC12 to 24 V power supply.
Select a power supply capacity with an ample surplus for the connected load.
* 6: The allowable current is 30 mA or less.
Provide a load resistance such that the current becomes 30 mA or less.
* 7: Polarity is [+] for pin 1 and [-] for pin 2. Connect correctly.
Do not impress a voltage exceeding 24 V across pins 1-2.
* A twisted pair cable (0.33 mm
cable is 150 m.
* Use an external input and output cable with appropriate external dimension, de-
pending on the number of cables to be installed.
6. 7. 4.
Base heater terminal
This is the output signal for base heater. Output signal ON, when the outdoor tem-
perature goes down below 2°C, and signal OFF at the outdoor temperature 4°C.
P.C.B
O
1
CN115
AC230 V
2
(Black)
(For rated 400 V power supply)
*8
3
Cable
4
(0.82 mm
* 8: Connect to pin 1 and pin 3. No connection pin 2 and pin 4.
* 9: The allowable current is 1 A or less.
7. FIELD SETTING
Discharge the static electricity from your body before setting up the DIP switches.
Never touch the terminals or the patterns on the parts that are mounted on the
board.
7. 1.
Field setting switches
Remove the service panel of the outdoor unit and the cover of the electrical compo-
nent box to access the PC board of the outdoor unit.
PC board switches for various settings and LED indicators are shown in the fi gure.
7. 2.
DIP switch setting
7. 2. 1.
List of Settings
SET3 and SET5 must be set for the DIP switch.
Confi gure the settings before turning on the power. Settings for SET1, SET2, and
SET4 DIP switches are factory default ones. Do not change them.
DIP Switch
SET1
1-4
SET2
1-4
1
2
SET3
3
4
SET4
1-4
1-2
SET5
3
4
DC power supply
(External) 12 to 24 V
+
Connected load
(Operation Indicator or
Error Indicator)
connected unit
2
(AWG22)) should be used. Maximum length of
Base heater *9
2
(18AWG))
CAUTION
Function
Forbidden
Forbidden
Outdoor unit address setting
Setting for number of slave units
Forbidden
Number of outdoor units installed
Forbidden
Terminal resistor setting
*5
-
*6
En-16
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