When a 400V class motor is inverter-driven, it should be insulation-enhanced or
surge voltages suppressed. Surge voltages attributale to the wiring constants
may occur at the motor terminals, deteriorating the insulation of the motor.
When parameter clear or all clear is performed, each parameter returns to the
factory setting. Re-set the required parameters before starting operation.
The inverter can be easily set for high-speed operation. Before changing its
setting, fully examine the performances of the motor and machine.
In addition to the inverter's holding function, install a holding device to ensure
Before running an inverter which had been stored for a long period, always
perform inspection and test operation.
( 5 ) Emergency stop
Provide a safety backup such as an emergency brake which will prevent the
machine and equipment from hazardous conditions if the inverter fails.
( 6 ) Maintenance, inspection and parts replacement
Do not carry out a megger (insulation resistance) test on the control circuit of
( 7 ) Disposing of the inverter
Treat as industrial waste.
( 8 ) General instructions
Many of the diagrams and drawings in this instruction manual show the inverter
without a cover, or partially open. Never operate the inverter like this. Always
replace the cover and follow this instruction manual when operating the inverter.
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