Can you tell me how to test a vfd? I have an exiting vfd that won't turn the spindle very fast. It's turning like 25 rpms. That's what it looks like. But I don't know if it's the spindle, vfd or the settings that has the problem. Please help......
I have a 110v 2.2kw HY HUANYANG VFD and spindle. TIA

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