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FAQ within [ FREQROL-A024 ]

1-10 of Total 40

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  • Energy saving effect of inverter oper...

    Energy saving operation of the inverter is represented by comparison with commercial power supply operation.  For example, to control air volume of an air co... More Details >>

    • No:21622
    • Release Date:2018/08/22 16:28
  • Inverter drive of 400 V class motor

    When the wiring between the inverter and motor is long, surge voltage occurs at the terminal of the motor.This surge voltage deteriorates insulation of the m... More Details >>

    • No:21926
    • Release Date:2018/08/22 16:30
  • Output side earth (ground) fault over...

    1. How much is the sensitivity current? When the sum of the three-phase output current of the inverter reaches approximately 70% of the inverter rated curren... More Details >>

    • No:21394
    • Release Date:2018/08/22 16:27
  • What happens if reset occurs during o...

    This is because when the inverter restarts while the motor is coasting, an overcurrent trip can occur during the restart process. However, the recent types o... More Details >>

    • No:21477
    • Release Date:2018/08/22 16:27
  • Surge voltage of 400 V inverter

    No. Although the carrier frequency increases or decreases the switching count, the switching speed is the OFF-to-ON speed of the IGBT element of the inverter... More Details >>

    • No:21401
    • Release Date:2018/08/22 16:27
  • Surge voltage of 400 V motor

    When the wire between the 400 V inverter and motor is long (20 m or longer), surge voltage occurs momentarily. This voltage is as two or more times as the DC... More Details >>

    • No:21404
    • Release Date:2018/08/22 16:27
  • Features of parameter unit FR-PU03

    This parameter unit realizes both easy operation and advanced operation. In normal operation, you only need to use six keys for easy operation. To perform ad... More Details >>

    • No:21614
    • Release Date:2018/08/22 16:28
  • Driving 200 V motor by 400 V inverter

    A 400 V inverter does not operate when 200 V is supplied to it, therefore the motor does not rotate. A 200 V motor can be rotated by a 400 V inverter, howeve... More Details >>

    • No:21446
    • Release Date:2018/08/22 16:27
  • "OV3" occurs during an inverter stop.

    An error may have occurred due to the rise of the main circuit voltage of the inverter caused by a power surge. Check for the power supply voltage. If the ca... More Details >>

    • No:21383
    • Release Date:2018/08/22 16:27
  • Can I replace the cooling fan alone?

    The fan of the FR-A024 cannot be replaced by the customer. Mitsubishi Electric System & Service will replace it, so contact us to order it. More Details >>

    • No:22001
    • Release Date:2018/08/22 16:30

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