En-11
Operation behavior
Each input terminal works as follows.
Connector
Input signal
Status
Input1
CN131 (Yellow)
OFF
Normal operation
ON
Low noise mode operation
Input2
CN132 (Green) *1
OFF
Cooling priority
ON
Heating priority
Input3
CN133 (White)
OFF
Normal operation
ON
Outdoor unit operation peak control
Input4
CN134 (Red)
OFF
Normal operation
ON
Batch stop or Emergency stop operation *2, *3
Input5
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”.
NOTE:
*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 the J-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 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 speci
fi
cations
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
*7
*5
*6
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
fi
gure.
7.2. DIP switch setting
7.2.1 List of Settings
SET 5 must be set for the DIP
switch.
Con
fi
gure the settings before turn-
ing on the power. Settings for SET
1, SET 2, SET 3 and SET 4 DIP
switches are factory default ones. Do
not change them.
DIP Switch
Function
SET 1
1-4
Forbidden
SET 2
1-4
Forbidden
SET 3
1-4
Forbidden
SET 4
1-4
Forbidden
SET 5
1-3
Forbidden
4
Terminal resistor setting
7 Segment display
Push button
LED lamp
Rotary switch
Outdoor unit printed circuit board
DIP switch
DIP switch
7.2.2 Terminating resistor setting
CAUTION
Be sure to set the terminal resistor according to speci
fi
cations.
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 ampli
fi
er.
• When setting the terminal resistor of a signal ampli
fi
er, refer to the installation manual of
the signal ampli
fi
er.
• 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 ampli
fi
ers 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?
Con
fi
gure 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 ampli
fi
er
9380545170_IM.indb 11
9380545170_IM.indb 11
5/19/2016 2:23:17 PM
5/19/2016 2:23:17 PM
