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FAQ within [ FREQROL-A024 ]

11-20 of Total 40

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  • Fault display

    "E.OV3" is displayed when the voltage between the inverter terminals PN rises abnormally high while the inverter is decelerating or stopped. In this case, th... More Details >>

    • No：21411
    • Release Date：2018/08/22 16:27

  • FR-A024

    Pr.59 is available in the products manufactured in October 1995 or later. Therefore, it cannot be read from the products manufactured before October 1995. More Details >>

    • No：21170
    • Release Date：2018/08/22 16:26

  • Speed control range

    Many geared motors cannot continuously operate at low speed (for example, slower than 6 Hz) due to grease viscosity.If the motor you are using is of this typ... More Details >>

    • No：22028
    • Release Date：2018/08/22 16:30

  • 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

  • Energy saving effect of inverter operation

    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

  • Model configuration

    The following seven models are available for the 200 V class: 0.1K, 0.2K, 0.4K, 0.75K, 1.5K, 2.2K, and 3.7K The following five models are available for the 4... More Details >>

    • No：21621
    • Release Date：2018/08/22 16:28

  • How many inverters can I connect using the communication unit?

    Since the communication unit conforms to the EIA Standard RS-485, up to 32 inverters can be connected. (Transmission format: Multidrop link, total wiring len... More Details >>

    • No：21616
    • 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

  • 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

  • Countermeasure against the instantaneous power failure with the inverter

    The power cannot be supplied to the control power supply separately for the FR-A024/A044 and small type FR-E500. Therefore, the UPS is not available. More Details >>

    • No：21368
    • Release Date：2018/08/22 16:27

11-20 of Total 40

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