Mitsubishi Electronics FR-S500 Emergency stop, Maintenance, inspection and parts replacement

CAUTION

￿The electronic thermal relay function 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 supply harmonics from the inverter may heat/damage the power capacitor and generator.

￿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.

￿When parameter clear or all clear is performed, reset the required parameters before starting operations. Each parameter returns to the factory setting.

￿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 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.

￿When the breaker on the inverter primary 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.

￿When any protective function is activated, take the appropriate corrective action, then reset the inverter, and resume operation.

(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 (detailed) show the inverter without a cover, or partially open. Never operate the inverter in this manner. Always replace the cover and follow this instruction manual (detailed) when operating the inverter.

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