AirStage AJH040LBLAH Manuale di installazione - Pagina 12
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Operation behavior
Each input terminal works as follows.
Connector
Input signal
OFF
Input1
CN131 (Yellow)
ON
OFF
Input2
CN132 (Green) *1
ON
OFF
Input3
CN133 (White)
ON
OFF
Input4
CN134 (Red)
ON
No pulse
Input5
CN135 (Orange) *4
Pulse
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, suffi 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 specifi 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.
P.C.B
CN136 (Black) or
CN137 (Blue)
*7
*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.
P.C.B.
Voltage:
CN115
power supply input voltage
(Black)
*8
cable
(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.
En-11
Status
Normal operation
Low noise mode operation
Cooling priority
Heating priority
Normal operation
Outdoor unit operation peak control
Normal operation
Batch stop or Emergency stop operation *2, *3
No information from electricity meter
Power usage information from electricity meter
Output
Connector
voltage
Output1
0V
CN136
DC 12-24 V
(Black)
*5
Output2
0V
CN137
DC 12-24 V
(Blue)
*5
DC power supply
(External) 12-24 V
Connected load (Operation Indica-
tor or Error Indicator)
Connected unit
Base heater *9
2
(18AWG))
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 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.
Confi 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
Outdoor unit printed circuit board
Status
7.2.2 Terminating resistor setting
Normal
Error
Be sure to set the terminal resistor according to specifi cations.
Set the terminal resistor for every network segment (NS).
Stop
Operation
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.
*5
• Be sure to set 1 terminal resistor in a network segment. You can set the terminal resistor
at the outdoor unit or signal amplifi er.
• When setting the terminal resistor of a signal amplifi er, refer to the installation manual of
the signal amplifi 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-
*6
ment: Total number of outdoor and indoor units and signal amplifi 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?
Confi gure the setting (DIP switch SET 5)
of the terminal resistor of the outdoor units
as shown below from conditions 1 to 3.
Figure: Terminal resistor setting
NS1 (Network segment 1)
(Set terminal resistor at outdoor units)
Master unit
Master unit
Master unit
NS2 (Network
segment 2)
CAUTION
DIP Switch
SET 1
1-4
SET 2
1-4
SET 3
1-4
SET 4
1-4
1-3
SET 5
4
LED lamp
Push button
CAUTION
SET 5
4
OFF
ON
Terminal resistor: on
Refrigerant system 1
Terminal resistor: off
Refrigerant system 2
Refrigerant system 3
NS3 (Network segment 3)
Terminal resistor: on
Function
Forbidden
Forbidden
Forbidden
Forbidden
Forbidden
Terminal resistor setting
7 Segment display
Rotary switch
DIP switch
Terminal
Remarks
resistor
—
Disable
Enable
(Factory setting)
About the setting of
terminal resistor
Outdoor unit
: On
: Off
Signal amplifi er
Install
Do not
install
NS4 (Network
segment 4)