Re: Chinese 2.2kw spindle burned out?
All the windings should read about the same, just make sure your fingers are not touching the bare prongs of the meter leads. Going from one lead each to ground on the spindle frame should be very high, in the megohms range or open. By running the spindle so slow you more than likely damaged the insulation by overheating. Smell the motor windings? Do they smell burnt if so look for the nearest garbage can. Mac knows his VFD settings. My guess it was all wrong from the first.
Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router Mach4 Kimber 1911 45ACP