M542 driver - motor vibration at low speeds

[birchy]

As I said before, the motor is vibrating when unmounted and has no load, so this is almost definitely a config issue. The machine doesn't actually rock about, however at certain speeds the vibration will catch it "in a sweet spot" and the whole thing sounds like I'm shaking a biscuit tin full of spanners. I'll have to re-check my wiring and try swapping to another drive, then another motor. Will also ask this question on the LinuxCNC forum as it may be a software setup issue...

And before you suggest using Mach, I'd like to point out that I've not used Windows since 2008. Yes, I'm a geek.

[JAZZCNC]

And before you suggest using Mach, I'd like to point out that I've not used Windows since 2008. Yes, I'm a geek.

Wouldn't have anyway has the control won't be doing this. This most defiantly won't be a software Config issue if thats what your meaning by Config issue.?
If you was getting missed steps or positional loss then yes.
Only Config setup thing it could possible be is Wrong micro stepping, after that it's something externally affecting motor/drive. Resonance is the most obvious and if your saying at certain speeds sounds like can of marbles then will be Mid band resonance in which case I'd say you have dodgy drive or motor has those drives are not known for having Mid band problems.
I don't think it will be noise either because again wouldn't do this and mostly would just have missed steps or some other strange happening.

Personally given the fact the motors have been stood 2yrs then I'd start there first and not the drive.