New alpha machine having problems

[Michaelodunk]

The techshop has 2 new Alpha machines both are having problems

Both seem to be doing odd things one problem is to not cut a circle the cutter goes off a little and then picks making the circle again. Like it didn't move a few steps.
The buddy is also doing the same sort of strange things. This started recently.
The tech guys have gone through the machines and looked at all the mechanical things that could be wrong and are blaming it on shopbot communication.
I was thinking it could be electrical. They have a water jet cutter that has a 60000 psi pump that they just started to using more and it starts and stops a lot.
It seems strange that 2 machines would act up at the same time.

Thanks

[paul_z]

Can you post a picture of the deviation?

[bleeth]

I agree that it could be electrical. In an industrial setting I like to have the bot power coming from a sub-panel that has more capacity then is being used. This helps keep down on intermittant power drop issues which will cause lost steps. If this is not possible a "buck and boost" transformer will keep the power flow consistant.
It could also be a grounding issue. This is a large cause of these kinds of problems. Much is on the forum about the right and wrong way to ground your machines.

[Michaelodunk]

I seem to of posted this in the wrong spot can the sys op move it to the general discussion area?