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FAQ within [ FREQROL-A100 ]

1-10 of Total 21

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  • Cause of overcurrent (OC2) at constant speed

    First of all, capacity reduction of the main circuit electrolytic capacitor is probable. Usually, the electrolytic capacitor is replaced every 5 years on ave... More Details >>

    • No：21407
    • Release Date：2018/08/22 16:27

  • Terminal AM calibration

    1. By setting Pr.158 (Terminal AM function selection) to "21" (Reference voltage output), 10 V is output from the terminal AM.2. Read Pr.901 in the PU operat... More Details >>

    • No：21936
    • 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

  • 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

  • Inverter input current

    Since the input current has a distorted waveform and the waveform ratio is low, the total inverter input power factor is very poor depending on the power sup... More Details >>

    • No：21440
    • Release Date：2018/08/22 16:27

  • Speed control failure due to 20 mA from DC 4

    It seems that there is a read error for 20 mA DC inside the inverter.Setting Pr.905 to 50 Hz while 20 mA DC is actually flowing between the terminals 4 and 5... More Details >>

    • No：21998
    • 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

  • 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

  • Comparison of noise between FR-A100 and FR-A100E

    The setting ranges of the carrier frequency are:- FR-A100: 2 kHz to 14.5 kHz- FR-A100EXCELLENT: 0.7 kHz to 14.5 kHzThe range of the FR-A100EXCELLENT is exten... More Details >>

    • No：21623
    • Release Date：2018/08/22 16:28

1-10 of Total 21

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