Filter
Top Products
A-4
(5) Emergency stop
(6) Maintenance, inspection and parts replacement
(7) Disposing of the inverter
(8) General instructions
CAUTION
zThe electronic thermal relay function does not guarantee protection of the motor
from overheating.
zDo not use a magnetic contactor on the inverter input for frequent starting/stopping
of the inverter.
zUse a noise filter to reduce the effect of electromagnetic interference. Otherwise
nearby electronic equipment may be affected.
zTake measures to suppress harmonics. Otherwise power supply harmonics from
the inverter may heat/damage the power capacitor and generator.
zWhen a 400V class motor is inverter-driven, please use an insulation-enhanced
motor or measures taken to suppress surge voltages. Surge voltages attributable to
the wiring constants may occur at the motor terminals, deteriorating the insulation of
the motor.
zWhen parameter clear or all clear is performed, reset the required parameters
before starting operations.
zThe inverter can be easily set for high-speed operation. Before changing its setting,
fully examine the performances of the motor and machine.
zIn addition to the inverter's holding function, install a holding device to ensure safety.
zBefore running an inverter which had been stored for a long period, always perform
inspection and test operation.
CAUTION
zProvide a safety backup such as an emergency brake which will prevent the
machine and equipment from hazardous conditions if the inverter fails.
zWhen the breaker on the inverter primary side trips, check for the wiring fault (short
circuit), damage of the inner parts of the inverter, etc. Identify the cause of the trip,
then remove the cause and power on the breaker.
zWhen any protective function is activated, take the appropriate corrective action,
then reset the inverter, and resume operation.
CAUTION
zDo not carry out a megger (insulation resistance) test on the control circuit of the
inverter.
CAUTION
zTreat as industrial waste.
Many of the diagrams and drawings in this instruction manual show the inverter without a
cover, or partially open. Never run the inverter in this status. Always replace the cover and
follow this instruction manual when operating the inverter.