Field Setting; Field Setting Switches; Dip Switch Setting - Fujitsu AirStage AJYA72GALH Installation Manual

P.C.B
+
CN136
1
(Black)
or CN137
2
(Blue)
*7
* 5: Provide a DC12 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.
2
* A twisted pair cable (0.33 mm (AWG22)) should be used. Maximum length of
cable is 150 m.
* Use an external input and output cable with appropriate external dimension, de-
pending on the number of cables to be installed.
6. 7. 4. Base heater terminal
Service parts : WIRE WITH CONNECTOR (9708642000)
This is the output signal for base heater. Output signal ON, when the outdoor tem-
perature goes down below 2°C, and signal OFF at the outdoor temperature 4°C.
P.C.B
1
CN115 AC240 V
2
(Black) (For rated 415 V power supply)
*8 3
Cable
4
2
(0.82 mm (18AWG))
* 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

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
board.
7. 1.

Field setting switches

Remove the service panel of the outdoor unit and the cover of the electrical compo-
nent box to access the PC board of the outdoor unit.
PC board switches for various settings and LED indicators are shown in the fi gure.
7. 2.

DIP switch setting

7. 2. 1. List of Settings
SET3 and SET5 must be set for the DIP switch.
Confi gure 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
SET1 1-4
SET2 1-4
1
2
SET3
3
4
SET4 1-4
1-2
SET5 3
4
En-17
*5
DC power supply
(External) 12 to 24 V
-
+
Connected load
(Operation Indicator or
Error Indicator)
*6
connected unit
Base heater *9
CAUTION
Function
Forbidden
Forbidden
Outdoor unit address setting
Setting for number of slave units
Forbidden
Number of outdoor units installed
Forbidden
Terminal resistor setting
Outdoor unit PC board
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
1 2
OFF OFF 0
OFF ON 1
ON OFF 2
ON ON -
(2) Nu mber 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
3 4
OFF OFF 0
OFF ON 1
ON OFF 2
ON ON -
(3) Number o f outdoor units installed
The number of outdoor units installed in 1 refrigerant system must be set.
Set for all outdoor units.
SET5
Number of outdoor units
1 2
OFF OFF
OFF ON
ON OFF
ON ON
7. 2. 3. Terminal resistor setting
Be sure to set the terminal resistor according to specifi 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 amplifi er.
• When settin g the terminal resistor of a signal amplifi er, refer to the installation
manual of the signal amplifi er.
• When settin g multiple terminal resistors, take note of the following items.
How many network segments are there in a VRF system?
①
Where will you set the terminal resistors in a network segment? (Condition for 1
②
segment: 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 500m)
How many outdoor units are connected to 1 refrigerant system?
③
7 Segment
LED lamp
LED indicator
Rotary switch
POWER
ERROR
MODE
LED101 LED102
(GREEN) (RED)
LED105 LED104 REF AD
SW105
SW106
X 10 X 1
MODE SET 1 SET 2 SET 3 SET 4
SELECT ENTER
/EXIT
SW101 SW102 SW103 SW104
SW107 SW108 SW109
Push button
DIP switch
SET5
Remarks
Master unit (Factory setting)
Slave unit 1
Slave unit 2
Forbidden
Remarks
Master uni only (Factory setting)
1 slave unit connected
2 slave unit connected
Forbidden
Remarks
1 (Factory setting)
2 -
3 -
- Forbidden
Caution