Need Help! VFD over current protection level


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Thread: VFD over current protection level

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    Cool VFD over current protection level

    Edit: problem has been resolved, I think, see below if interested

    Hello -- I have a TECO Westinghouse L510 VFD controlling a "Chinese spindle" (1.5 KW, 220 V, 400 Hz, 8 A). I have had days of good operation but lately the VFD goes into "Inverter over current (CL)" mode about 6 seconds after turning the spindle on.

    • Error **CL** is on page 139 in the linked manual PDF, but I can't find any other information about it anywhere.
    • This is apparently different from the motor overload or output current fault.
    • The VFD runs fine with the spindle disconnected. Each spindle phase reads about 4.1 ohms.
    • The issue arises whether at 1000 rpm or 24000 rpm.
    • The VFD is L510-101-H1-U

    I bought the VFD and spindle secondhand, so I don't fully understand the parameter-space, but I have confidence in the original owner's competence... Any ideas about how to troubleshoot this?


    Solution?
    If I understand things correctly, my VFD can only power up to 1 HP or 0.75 kW, but this spindle is 2 HP. I need to downgrade the spindle (which should be okay for cutting wood) or upgrade the VFD (if I can find a 120V 2HP version). Thanks for your time/maybe this will help someone else!

    Similar Threads:
    Last edited by gg314; 10-23-2020 at 06:42 PM. Reason: resolved


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VFD over current protection level

VFD over current protection level