En-11
Operation behavior
Each input terminal works as follows.
Connector Input signal Status
Input 1
CN131 (Yellow)
OFF Normal operation
ON Low noise mode operation
Input 2
CN132 (Green) *1
OFF Cooling priority
ON Heating priority
Input 3
CN133 (White)
OFF Normal operation
ON Outdoor unit operation peak control
Input 4
CN134 (Red)
OFF Normal operation
ON Batch stop or Emergency stop operation *2, *3
Input 5
CN135 (Orange) *4
No pulse No information from electricity meter
Pulse Power usage information from electricity meter
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”.
NOTES:
*1: The “external input priority mode” must be set by pressing push but-
ton 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 the J-II does not guar-
antee the regulations of each country. For this reason, sufficient
checking is necessary regarding use.
Especially, since the fact that the equipment may not be emergen-
cy-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 50 ms or more, and must be
interval 50 ms or more.
6.6.3 External output terminal
You can detect the operation condition of outdoor unit and the abnormal situation of both
indoor and outdoor 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
Output1
CN136
(Black)
0V Normal
DC 12-24 V
*5
Error
Output2
CN137
(Blue)
0V Stop
DC 12-24 V
*5
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
*5: Provide a DC 12 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 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.
6.6.4 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 mm
2
(18AWG))
P.C.B.
Base heater *9
CN115
(Black)
*8
*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
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
SET 5 must be set for the DIP
switch.
Configure the settings before turning
on the power. Settings for SET 1
and SET 2 DIP switches are factory
default ones. Do not change them.
DIP Switch Function
SET 1 1-4 Forbidden
SET 2 1-4 Forbidden
SET 5
1-3 Forbidden
4 Terminal resistor setting
MODE
/NEXT
SELECT ENTER
SET1
SW101
SW102
REF AD
POWER
MODE
ERROR
× 1 0 × 1
SET2
LED 105
LED101
LED102
LED 104
SW111
7 Segment
displays
Push buttons
LED lamp
(green)
LED lamp
(red)
Rotary switches
Outdoor unit PC board
DIP switches
DIP switch (SET 5)
7.2.2 Terminating resistor setting
CAUTION
Be sure to set the terminal resistor according to specifications.
Set the terminal resistor for every network segment (NS).
If terminal resistor is set in multiple devices, the overall communication system may be
damaged.
If terminal resistor is not set in a device, abnormal communication may occur.
• Be sure to set 1 terminal resistor in a network segment. You can set the terminal resistor
at the outdoor unit or signal amplifier.
• When setting the terminal resistor of a signal amplifier, refer to the installation manual of
the signal amplifier.
• When setting multiple terminal resistors, take note of the following items.
(1) How many network segments are there in a VRF system?
(2) Where will you set the terminal resistors in a network segment? (Condition for 1 seg-
ment: Total number of outdoor and indoor units and signal amplifiers is less than 64,
or the total length of the transmission cable is less than 500 m)
(3) How many outdoor units are connected to 1 refrigerant system?
Configure the setting (DIP switch SET 5)
of the terminal resistor of the outdoor units
as shown below from conditions (1) to (3).
SET 5
Terminal
resistor
Remarks
4
OFF Disable
—
ON Enable (Factory setting)
Figure: Terminal resistor setting
NS2 (Network
segment 2)
NS3 (Network segment 3)
NS4 (Network
segment 4)
NS1 (Network segment 1)
(Set terminal resistor at outdoor units)
Master unit
Master unit
Master unit
Refrigerant system 1
Refrigerant system 2
Refrigerant system 3
Terminal resistor: off
Terminal resistor: on
Terminal resistor: on
About the setting of
terminal resistor
Outdoor unit
Install
Do not
install
: On
: Off
Signal amplifier
9380545200-03_IM.indb 119380545200-03_IM.indb 11 4/6/2017 3:20:35 PM4/6/2017 3:20:35 PM
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