Mitsubishi Electric FR-A500L Series Instruction Manual page 5

(4) Operation
When you have chosen the retry function, stay away from the equipment as it will restart suddenly
after an alarm stop.
The [STOP] key is valid only when the appropriate function setting has been made. Prepare an
emergency stop switch separately.
Make sure that the start signal is off before resetting the inverter alarm. A failure to do so may restart
the motor suddenly.
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 overheat.
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 an over 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 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 (e. g. mechanical brake) to ensure
safety.
Before running the 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 the inverter.
(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 run the inverter like this. Always replace the cover and follow this instruction manual when
operating the inverter.
CAUTION
CAUTION
CAUTION
CAUTION