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FAQ within [ FREQROL-A024 ]

1-10 of Total 40

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  • Output side earth (ground) fault overcurrent protection

    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

  • 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

  • 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

  • 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

  • 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

  • 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

  • "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

  • Parameter unit FR-PU03

    You can use it with the FR-A200 (E) and FR-A100 (E) series. (Note) Use the connection cable (option). You cannot use it with the FR-Z and FR-U series (except... More Details >>

    • No：21615
    • Release Date：2018/08/22 16:28

  • What happens if reset occurs during operation?

    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

  • Synchronous operation of two motors

    When synchronously operating two motors, you need to detect speed from both motors. Each inverter is controlled based on this speed detection signal. As an e... More Details >>

    • No：21540
    • Release Date：2018/08/22 16:28

1-10 of Total 40

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