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FAQ within [ FREQROL-V200 ]

11-20 of Total 52

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  • Difference from general-purpose inverter

    While the inverter uses open-loop (V/F) control, it uses semi-closed loop vector control (constant current control). This enables output of stable torque esp... More Details >>

    • No：21659
    • Release Date：2018/08/22 16:28

  • Speed control range

    1:1500 when using a vector control dedicated motor. Continuous 100% torque operation and short-time 150% torque operation are possible even at 1 rpm. Continu... More Details >>

    • No：21662
    • Release Date：2018/08/22 16:28

  • Can I change the carrier frequency?

    You can change it by changing the setting of Pr.72 (PWM frequency selection). Setting range of Pr.72: 0, 1, 2, 3, 4, 5, 6 (Initial setting is "6".) (The smal... More Details >>

    • No：21640
    • Release Date：2018/08/22 16:28

  • Regeneration unit

    You can reuse the brake units used with the FR-A series, including the FR-RC power regeneration converter, FR-BU, and BU brake unit. You can also use the hig... More Details >>

    • No：21658
    • Release Date：2018/08/22 16:28

  • I want to drive other manufacturer's motor with PG

    You can drive the motor with the FR-V240E-5.5K. However, the following conditions apply: - You need to perform auto tuning because the motor's circuit consta... More Details >>

    • No：21539
    • Release Date：2018/08/22 16:28

  • Angular velocity change control

    The inverter itself does not have a function to detect the rotation angle and change the velocity accordingly. Therefore, to implement required control, it i... More Details >>

    • No：22086
    • Release Date：2018/08/22 16:30

  • Pre-excitation, zero-speed control, and servo lock

    Pre-excitation is the process to control current while a motor is stopped so that motor torque can be generated immediately. There are two methods for this p... More Details >>

    • No：21562
    • Release Date：2018/08/22 16:28

  • Comparison with FR-A200E

    In addition to speed control, you can also select torque control as well as you can perform position control using an option. The speed control range is as l... More Details >>

    • No：21655
    • Release Date：2018/08/22 16:28

  • Inverter current characteristics

    In general, relationship between T (torque), K (constant), V (voltage), I (current), and F (frequency) is expressed as "T = K × (V/F) × I". Since (V/F) is co... More Details >>

    • No：21505
    • Release Date：2018/08/22 16:28

  • Encoder cable length restriction

    If the cable length is longer than 100 m, speed may not be read correctly due to voltage drop and waveform deformation of the encoder signal. Therefore, use ... More Details >>

    • No：21932
    • Release Date：2018/08/22 16:30

11-20 of Total 52

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