Wiring
• When wiring the inverter to the power supply, insert a recommended moulded case circuit breaker (MCCB) or residual-current-
operated protective device (RCD)/earth leakage circuit breaker (ELCB) (with overcurrent protection) in the path of power lines.
Use the devices within the recommended current range.
• Use wires of the specified size.
• When wiring the inverter to the power supply that is 500 kVA or more, be sure to connect an optional DC reactor (DCR).
Otherwise, fire could occur.
• Do not use one multicore cable in order to connect several inverters with motors.
• Do not connect a surge killer to the inverter's output (secondary) circuit.
Doing so could cause fire.
• Ground the inverter in compliance with the national or local electric code.
Otherwise, electric shock could occur.
• Qualified electricians should carry out wiring.
• Disconnect power before wiring.
Otherwise, electric shock could occur.
• Install inverter before wiring.
Otherwise, electric shock or injuries could occur.
• Ensure that the number of input phases and the rated voltage of the product match the number of phases and the voltage of
the AC power supply to which the product is to be connected.
Otherwise fire or an accident could occur.
• Do not connect the power supply wires to output terminals (U, V, and W).
• Do not insert a braking resistor between terminals P (+) and N (-), P1 and N (-), P (+) and P1, DB and N (-), or P1 and DB.
Doing so could cause fire or an accident.
• Generally, control signal wires are not reinforced insulation. If they accidentally touch any of live parts in the main circuit, their
insulation coat may break for any reasons. In such a case, ensure the signal control wire is protected from making contact with
any high voltage cables.
Doing so could cause an accident or electric shock.
• Connect the three-phase motor to terminals U, V, and W of the inverter.
Otherwise injuries could occur.
• The inverter, motor and wiring generate electric noise. Ensure preventative measures are taken to protect sensors and
sensitive devices from rfi noise..
Otherwise an accident could occur.
Operation
• Be sure to install the terminal cover before turning the power ON. Do not remove the covers while power is applied.
Otherwise electric shock could occur.
• Do not operate switches with wet hands.
Doing so could cause electric shock.
• If the auto-reset function has been selected, the inverter may automatically restart and drive the motor depending on the
cause of tripping.
(Design the machinery or equipment so that human safety is ensured after restarting.)
• If the stall prevention function (current limiter), automatic deceleration, and overload prevention control have been selected,
the inverter may operate at an acceleration/deceleration time or frequency different from the commanded ones. Design the
machine so that safety is ensured even in such cases.
Otherwise an accident could occur.
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