Re: G320s, New and Improved!

"Tim Goldstein" <timg@k...> wrote:

> I just got an opportunity to test out the new and improved G320

drives on

> Bridgett ( for you new comers that is my Bridgeport series II

mill). I am

> IMPRESSED!

Haven't even connected a single wire to the G340's I took delivery of
very recently :-( There should have been a notice up to let buyers
know there is an update coming! Wonder if I can send my newly
delivered G340's back for an upgrade?

> First off there is virtually no dither noise. I do have one axis

that you

> can hear the motor shift back and forth very slightly and at a very

slow

> rate (maybe one or two cycles per second) when it is stopped in

certain

> positions. There is absolutely no humming noise that I used to get

on the

> old G320's.

The presence of dither means that the servo is always seeking
the "correct" position means that servo is always overcorrecting,
then undercorrecting. Re: the old servo vs stepper "controversy".

Peter