Mitsubishi Electronics FR-A500L Operation, Emergency stop, Disposing of the inverter

(4) Operation

CAUTION

zWhen you have chosen the retry function, stay away from the equipment as it will restart suddenly after an alarm stop.

zThe [STOP] key is valid only when the appropriate function setting has been made. Prepare an emergency stop switch separately.

zMake sure that the start signal is off before resetting the inverter alarm. A failure to do so may restart the motor suddenly.

zThe load used should be a three-phase induction motor only. Connection of any other electrical equipment to the inverter output may damage the equipment.

zThe electronic overcurrent protection does not guarantee protection of the motor from overheat.

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 harmonics from the inverter may heat/damage the power capacitor and generator.

zWhen 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.

zWhen parameter clear or all clear is performed, each parameter returns to the factory setting. Re-set the required parameters before starting operation.

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 (e. g. mechanical brake) to ensure safety.

zBefore running the inverter which had been stored for a long period, always perform inspection and test operation.

(5)Emergency stop

CAUTION

zProvide 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

zDo not carry out a megger (insulation resistance) test on the control circuit of the inverter.

(7)Disposing of the inverter

CAUTION

zTreat 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.

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