Field Setting; Field Setting Switches; Dip Switch Setting - Fujitsu AIRSTAGE AJY126LELAH Installation Manual

Operation behavior
Each input terminal works as follows.
Connector Input 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
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:
The "external input priority mode" must be set by pressing push but-
*1:
ton on PC board of outdoor unit. (Refer to "7.FIELD SETTING".)
Batch stop or Emergency stop pattern can be selected by outdoor
*2:
unit PC board push button. (Refer to "7.FIELD SETTING".)
The emergency stop function mounted in the J-II does not guar-
*3:
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.
Pulse input to CN135 must be width 50 ms or more, and must be
*4:
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.
P.C.B
CN136 (Black) or
CN137 (Blue)
*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
(18AWG))
2

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 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.
Outdoor unit PC board
Status
7.2.2 Terminating resistor setting
Normal
Error
Be sure to set the terminal resistor according to specifications.
Stop
Set the terminal resistor for every network segment (NS).
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.
• 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).
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
1-3
SET 5
4
LED lamp
(green)
MODE
SELECT ENTER
/NEXT
Rotary switches
Push buttons
SW111
DIP switch (SET 5)
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
Terminal resistor setting
LED lamp 7 Segment
(red) displays
POWER
ERROR
MODE
REF AD
× 1 0 × 1
SET1 SET2
DIP switches
Terminal
Remarks
resistor
—
Disable
Enable (Factory setting)
About the setting of
terminal resistor
Outdoor unit
: On
: Off
Signal amplifier
Install
Do not
install
NS4 (Network
segment 4)