En-15
7. FIELD SETTING
CAUTION
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 PC
board.
7.1. Field setting switches
Remove the service panel of the outdoor unit and the cover of the electrical component
box to access the PC board of the outdoor unit.
PC board switches for various settings and LED displays are shown in the figure.
7.2. DIP switch setting
7.2.1 List of Settings
SET3 and SET5 must be set for the
DIP switch.
Configure 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
Function
SET 1
1-4
Prohibited
SET 2
1-4
Prohibited
SET 3
1
Outdoor unit address setting
2
3
Setting for number of slave
units
4
SET 4
1-4
Prohibited
SET 5
1-2
Number of outdoor units
installed
3
Prohibited
4
Terminal resistor setting
7 Segment
LED indicator
Push button
LED lamp
Rotary switch
Outdoor unit PC board
DIP switch
7.2.2 Settings to be confi gured locally
(1) Outdoor unit address setting
When 2 or 3 outdoor
units are installed to 1
refrigerant system, set the
address for each outdoor
unit.
Set the address for all
outdoor units.
SET3
Outdoor unit
address
Remarks
1
2
OFF
OFF
0
Master unit
(Factory setting)
OFF
ON
1
Slave unit 1
ON
OFF
2
Slave unit 2
ON
ON
-
Prohibited
(2) Number of slave units setting for outdoor unit
Set the number of slave
units connected to 1
refrigerant system.
Set only the master unit.
SET3
Number of
connectable
outdoor units
Remarks
3
4
OFF
OFF
0
Master unit only
(Factory setting)
OFF
ON
1
1 slave unit connected
ON
OFF
2
2 slave unit connected
ON
ON
-
Prohibited
(3) Number of outdoor units installed
The number of outdoor
units installed in 1 refriger-
ant system must be set.
Set for all outdoor units.
SET5
Number of
outdoor units
Remarks
1
2
OFF
OFF
1
(Factory setting)
OFF
ON
2
-
ON
OFF
3
-
ON
ON
-
Prohibited
Operation behavior
Each input terminal works as follows.
Connector
Input
signal
Status
Outdoor unit
Master Slave
Input 1
CN131 (Yellow)
OFF
Normal operation
O
ON
Low noise mode operation
Input 3
CN133 (White)
OFF
Normal operation
O
ON
Outdoor unit operation peak
control
Input 4
CN134 (Red)
OFF
Normal operation
O
ON
Batch stop or Emergency
stop operation (*1, *2)
Input 5
CN135 (Orange) (*3)
No pulse
No information from electric-
ity 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
button on the PC board of outdoor unit. About the setting, please refer to “7. 4. Push but-
ton setting”.
NOTES:
*1: The “external input priority mode” must be set by pressing push button on PC board
of outdoor unit. (Refer to “7. FIELD SETTING”.)
*2: Batch stop or Emergency stop pattern can be selected by outdoor unit PC board
push button. (Refer to “7. FIELD SETTING”.)
*3: The emergency stop function mounted in this model does not guarantee the regula-
tions 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.
6.7.3 External output terminal (master unit only)
• 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 specifications
Error status
This output indicates the outdoor unit
and connected indoor unit's “Normal” or
“Error” status.
Operation status
This output indicates the outdoor unit's
“Operation” status.
Connector
Output
voltage
Status
Output 1
CN136
(Black)
0 V
Normal
DC 12-24 V
(*1)
Error
Output 2
CN137
(Blue)
0 V
Stop
DC 12-24 V
(*1)
Operation
P.C.B.
CN136 (Black) or
CN137 (Blue)
DC power supply
(External) 12-24 V
Connected load (Operation Indica-
tor or Error Indicator)
Connected unit
*1: Provide a DC 12 to 24 V power supply.
Select a power supply capacity with an ample surplus for the connected load.
*2: The allowable current is 30 mA or less.
Provide a load resistance such that the current becomes 30 mA or less.
*3: 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 mm² (22AWG)) should be used.
Maximum length of cable is 150 m.
* Use an external input and output cable with appropriate external dimension, depending
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 temperature
goes down below 2°C, and signal OFF at the outdoor temperature 4°C.
Voltage:
power supply input voltage
Cable
(0.82 mm² (18AWG))
P.C.B.
Base heater (*2)
CN115
(Black)
(*1)
*1: Connect to pin 1 and pin 3. No connection pin 2 and pin 4.
*2: The allowable current is 1 A or less.
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