Instruction manual

A-2
(2) Wiring
(3) Trial run
(4) Usage
(5) Emergency stop
(6) Maintenance, inspection and parts replacement
(7) Disposal
z Do not install a power factor correction capacitor or surge
suppressor/capacitor type filter on the inverter output
side.
z The connection orientation of the output cables U, V, W to
the motor will affect the direction of rotation of the motor.
z Before starting operation, confirm and adjust the
parameters. A failure to do so may cause some machines
to make unexpected motions.
z When you have chosen the retry function, stay away from
the equipment as it will restart suddenly after trip.
z Since is valid only when functions are set (refer to the
Instruction Manual ), provide a circuit and switch separately
to make an emergency stop (power off, mechanical brake
operation for emergency stop, etc).
z Make sure that the start signal is off before resetting the
inverter alarm. A failure to do so may restart the motor
suddenly.
z 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.
z Do not modify the equipment.
z Do not perform parts removal which is not instructed in
this manual. Doing so may lead to fault or damage of the
product.
z
The electronic thermal relay function does not guarantee
protection of the motor from overheating.
z Do not use a magnetic contactor on the inverter input for
frequent starting/stopping of the inverter.
z Use a noise filter to reduce the effect of electromagnetic
interference. Otherwise nearby electronic equipment may
be affected.
z Take measures to suppress harmonics. Otherwise power
supply harmonics from the inverter may heat/damage the
power factor correction capacitor and generator.
z When 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.
z When parameter clear or all parameter clear is performed,
reset the required parameters before starting operations.
Each parameter returns to the initial value.
z The inverter can be easily set for high-speed operation.
Before changing its setting, fully examine the
performances of the motor and machine.
z In addition to the inverter’s holding function, install a
holding device to ensure safety.
z Before running an inverter which had been stored for a
long period, always perform inspection and test
operation.
z For prevention of damage due to static electricity, touch
nearby metal before touching this product to eliminate
static electricity from your body.
CAUTION
CAUTION
WARNING
CAUTION
z Provide a safety backup such as an emergency brake
which will prevent the machine and equipment from
hazardous conditions if the inverter fails.
z When the breaker on the inverter input side trips, check
for the wiring fault (short circuit), damage to internal parts
of the inverter, etc. Identify the cause of the trip, then
remove the cause and power on the breaker.
z When any protective function is activated, take the
appropriate corrective action, then reset the inverter, and
resume operation.
z Do not carry out a megger (insulation resistance) test on
the control circuit of the inverter.
z Treat as industrial waste.
General instruction
Many of the diagrams and drawings in this Installation
Guideline show the inverter without a cover, or partially
open. Never operate the inverter in this manner. Always
replace the cover and follow this Installation Guideline
when operating the inverter.
CAUTION
CAUTION
CAUTION
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