Instruction manual

A - 4
CAUTION
The load used should be a three-phase induction motor only. Connection of any other electrical
equipment to the inverter output may damage the equipment.
The electronic overcurrent protection does not guarantee protection of the motor from overheating.
Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the inverter.
Use a noise filter to reduce the effect of electromagnetic interference. Otherwise nearby electronic
equipment may be affected.
Take measures to suppress harmonics. Otherwise power harmonics from the inverter may
heat/damage the power capacitor and generator.
When a 400V class motor is inverter-driven, it should be insulation-enhanced or surge voltages
suppressed. Surge voltages attributable 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, examine the
performance of the motor and machine.
In addition to the inverter's holding function, install a holding device to ensure safety.
Before running an inverter which had been stored for a long period, always perform inspection and
test operation.
(5) Emergency stop
CAUTION
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
CAUTION
Do not carry out a megger (insulation resistance) test on the control circuit of the inverter.
(7) Disposing of the inverter
CAUTION
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 run the inverter like this. Always replace the cover and follow this instruction manual when
operating the inverter.