Need Help! How to Wire EMI Filter for 220v VFD?


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Thread: How to Wire EMI Filter for 220v VFD?

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    Default How to Wire EMI Filter for 220v VFD?

    I have a CW4L2-20A-S EMI Filter.

    Can I just attach L1 to one pole and L2 to the other?

    Where is it best to ground the EMI? (to the VFD Ground terminal or machine frame?)

    TIA

    Eric

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    Default Re: How to Wire EMI Filter for 220v VFD?

    Yes, on the line side, L1 to one side and L2 to the other. Load side, the same.

    All grounds should be connected to the panel at a single point to help prevent ground loops.

    Jim Dawson
    Sandy, Oregon, USA


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    Default Re: How to Wire EMI Filter for 220v VFD?

    Thanks Jim!



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    Default Re: How to Wire EMI Filter for 220v VFD?

    Quote Originally Posted by dbtoutfit View Post
    I have a CW4L2-20A-S EMI Filter.

    Can I just attach L1 to one pole and L2 to the other?

    Where is it best to ground the EMI? (to the VFD Ground terminal or machine frame?)

    TIA

    Eric
    20A may be on the light side, depends on what size your spindle is

    It would depend how you have your control cabinet wired, the supply to your VFD Drive would normally include a Ground wire so the Ground would connect to the filter along with the L1 and L2 and then connect to the VFD Drive

    Mactec54


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    Default Re: How to Wire EMI Filter for 220v VFD?

    All equipment grounds should be tied together. Power line coming in ground the green or green/yellow to frame, that tie point to the VFD ground and EMI ground.

    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router Mach4 Kimber 1911 45ACP


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How to Wire EMI Filter for 220v VFD?

How to Wire EMI Filter for 220v VFD?

How to Wire EMI Filter for 220v VFD?