Re: [CAD_CAM_EDM_DRO] Re: Lost steps

Mariss Freimanis wrote:

>
>
> What may be overlooked here is the intermittent nature of the problem
> originally reported.
>
> If you don't want to have a system plagued with noise problems, do
> the ground wiring right from the beginning. Right means use the
> concept of a "holy point ground". This means ALL ground wires are
> returned to a single point; power supply ground, motor drive ground,
> parallel port ground, in short if it has a ground wire, take it to
> that point! If shields are used, take them there too.

This is not always the best solution. For power wires, however, it is
almost
ALWAYS the best way to do things.

> Resist the temptation to "daisy chain" ground wires. It can be
> tempting to run a 3" wire from one device to an adjacent one where
> otherwise it would be a 3 foot wire run back to the "holy point" You
> won't be doing yourself a favor by taking the shortcut.

Yes, this is a very good way to get these circulating currents, also
known as
ground loops.

Jon