17
CAUTION
●
Always confirm that the input power is OFF before starting wiring.
Failure to do so could lead to electric shock or fire.
●
Always connect the ground wire.
Failure to do so could lead to electric shock or fire.
●
Wiring work must be carried out by a qualified technician.
Failure to do so could lead to electric shock or fire.
●
Always install the unit before wiring.
Failure to do so could lead to electric shock or injury.
ATTENTION
●
Do not connect an AC power supply to the output terminals (U, V, W).
Failure to do so could lead to injury or fire.
●
Confirm that the product's rated voltage and the AC power supply voltage
match.
Failure to do so could lead to injury or fire.
●
Tighten the terminal screws to the designated tightening torque.
Failure to do so could lead to fire.
■
Precautions
Note the following points carefully to prevent miswiring and misuse of the
inverter. (Devices may be broken.)
1) Connect the power supply to input terminals (R/L1, S/L2, T/L3) and the
motor to output terminals (U, V, W).
2) Make sure to ground the supply neutral.
3) Do not connect anything other than the optional brake resister across
terminals DB+ and DB-. Never short these terminals to each other as this
will damage the internal electronics of the inverter.
4) Use sleeved round crimp terminals for power supply and motor connections.
5) After wiring the main circuit, double check for tightness as access will be
limited once control circuit wiring is in place.
6) When connecting directly to a large capacity power transformer (500kVA
or more), always install a power factor improvement reactor (option) on the
inverter's input side.
7) Select connected devices and wire size according to the table on page 19.
Main Circuit Wiring
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