Hi,

I have 3 x Nema 23 high torque motors (3nm), they are barely 2 months old and have been running on a lower voltage & current that what they need.

The motors worked perfectly fine for 10mins, I then turned them off and came back to them 3 days later and now will not turn and just vibrate (regardless of what I do with Mach 3 motor tuning).

They seem to be vibrating at different levels, 1 is very weak but another is very strong, they just don't turn and make loud noises while moving around the bench.

Could they be broke, or is there another explanation?

Thanks in advance.