Fujitsu AJ**A72LBTF, Installation Instruction Sheet

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4.10.1. SELECTING WIRING AND BREAKER
Refer to Tables 4.10-1, 4.10-2, and 4.10-3 for the wiring and breaker specifications at each installation condition.
Table 4.10-1 Breaker and wiring specifications for each model
1) Observe the following instructions pertaining to wire length.
Maximum wiring length: Keep the voltage drop within 2%.
If the wiring length is long, increase the wiring diameter.
Master unit
AJ A72LBTF 40 6 4 37
AJ A90LBTF 40 6 4 33
AJ 126LBTF 63 10 6 39
Slave unit
AJ A72UBTF 40 6 4 37
AJ A90UBTF 50 6 4 30
AJ 126UBTF 63 10 6 37
Model name
Breaker
capacity (A)
Power supply
line (mm
2
)
Ground wire
(mm
2
)
Critical wiring
length (m)
1)
Table 4.10-3 Transmission cable
Use Size Wire type Remarks
LONWORKS compatible cable
22AWG LEVEL 4 (NEMA) non-polar 2 core,
twisted pair solid core diameter 0.65 mm
Transmission cable 0.33 (mm
2
)
Table 4.10-2 Main breaker and wiring specifications if multiple power supply lines are integrated
AJ A72LBTF AJ A72UBTF — 100 14 5.5 49
AJ A90LBTF AJ A72UBTF — 100 14 5.5 47
AJ A90LBTF AJ A90UBTF — 100 14 5.5 42
AJ 126LBTF AJ A72UBTF — 125 22 8 55
AJ 126LBTF AJ A90UBTF — 125 22 8 51
AJ A90LBTF AJ A72UBTF AJ A72UBTF 150 22 8 50
AJ 126LBTF AJ 126UBTF — 150 38 8 72
AJ A90LBTF AJ A90UBTF AJ A90UBTF 150 38 8 76
AJ 126LBTF AJ A90UBTF AJ A72UBTF 175 38 14 67
AJ 126LBTF AJ A90UBTF AJ A90UBTF 175 38 14 63
AJ 126LBTF AJ 126UBTF AJ A72UBTF 200 60 14 90
AJ 126LBTF AJ 126UBTF AJ A90UBTF 200 60 14 86
AJ 126LBTF AJ 126UBTF AJ 126UBTF 250 60 22 75
Breaker
capacity (A)
Power supply
line (mm 2 )
Ground wire
(mm 2 )
Critical wiring
length (m) 1)
Model name
Master unit Slave unit 1 Slave unit 2
1) Observe the following instructions pertaining to wire length.
Maximum wiring length: Keep the voltage drop within 2%.
If the wiring length is long, increase the wiring diameter.
Breaker for
leakage current
100 mA 0.1 sec
or less
CAUTION
• Pay attention to the following points while attaching wires on the terminal board.
Do not attach 2 wires on one side.
Do not twist wires.
Do not cross the wires.
Do not shorted at edge at root.
No Good
No Good No Good
No Good No Good
2pcs at one side
Wires twisted Wires crossed
Shorted at edge Shorted at root
OK
1 wire
OK
2 wires
9374241033_IM_en_p18-36.p65 26/8/2008, 18:23 19