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Thread: Kflop right for me?

  1. #13
    Community Moderator ger21's Avatar
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    Default Re: Kflop right for me?

    Try increasing the microstepping on the drives.

    Gerry

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  2. #14
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    Default Re: Kflop right for me?

    As Gerry suggests, changing the microstepping is the easiest option to try.

    Resonance is where modern digital drives excel, as they'll try their best to compensate to avoid it (best I know of are currently Leadshine EM or AM series drives). Even by fitting encoders, the KFlop can't do much about resonance as it's a result of the interaction between the driver, and the motor. The only thing an encoder can achieve in that situation is to tell things are resonating.

    However, the main cause is likely to be the fact you're using Nema 34 motors. Most of these really need high voltage drives to get the best from them, as they typically have relatively high inductance.
    Using a higher voltage will usually mean the resonance occurs at a faster speed, which can mean it's less of a problem, as resonance is often amplified by the motors load.

    If you are going to start changing drivers, it can be worth swapping to Nema 23/4 motors. You can often get better performance from a smaller motor spinning faster, than you can from a bigger motor spinning slower.



  3. #15
    Gold Member TomKerekes's Avatar
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    Default Re: Kflop right for me?

    Hi Badarzewska,

    Size 34 motors have large mass and therefor lower resonant frequencies (no one tried answering my puzzle in post 7). Adding KStep or Encoders is not likely to help. Some advanced drives with anti-resonant damping may help some amount. Although the Wantai drives seem to claim to do this.

    Consider going to Servos for smooth and high performance.

    Regards



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Kflop right for me?

Kflop right for me?