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Precautions to be taken for power supply wiring
Use a round crimp-style terminal for connection to the power supply terminal block.
Attach insulation sleeve
Round crimp-style terminal
Electric wire
In case it cannot be used due to unavoidable reasons, be sure to observe the following instructions.
Connect wires of the
same gauge to both
side. (GOOD)
Do not connect wires of
the same gauge to one
side. (WRONG)
Do not connect wires
of different gauges.
(WRONG)
Good
Wrong
Wrong
(Loose wiring and similar problems may result in abnormal heat build-up.)
Fig. 29
• In wiring, make certain that prescribed wires are used, carry out complete connections, and fix the wires
so that external forces are not applied to the terminals.
•
If the strand wire is used, do not solder it.
Tightening torque for the terminal screws.
•
Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small, the
head of the screw might be damaged, and the screw will not be properly tightened.
•
If the terminal screws are tightened too hard, screws might be damaged.
Refer to the table below for the tightening torque of the terminal screws.
Tightening torque (N·m)
0.79 to 0.97
Terminal block for remote controller
1.18 to 1.44
Terminal block for wiring the units
1.18 to 1.44
Earth terminal
Specifications for field wire.
• Remote controller and transmission wiring are field supplied. Refer to Table 2.
• Follow 60245 IEC 57 for wiring type (insulating sheath specifications, etc.)
Table 2
Length
Size(mm
2
)
Wire spec.
Type
–
2.5
4 cores (incl. earth wire)
20•24
Wiring the units
4 cores (incl. earth wire)
Shield wire
36•45
Max.500m*
0.75-1.25
2 cores
Remote controller
cord
*Total length of system wiring if using group control.
• Wiring specifications assume a voltage drop of 2%.
Fig. 28
