Re: G201 Improvements

I like the improvements you are making to your G201, the 160VDC and
the automatic standby current. I would not mind seeing a 11 amp
version as i have some M112-FJ-326 i would like to drive.


--- In CAD_CAM_EDM_DRO@egroups.com, "Mariss Freimanis"
<geckohall@h...> wrote:

> Hi,
>
> I am doing a major revision of the G201. The improvements, among
> others, are having standby current reduction and changing the STEP
> and DIRECTION interface to where it can be common +5VDC (as now) or
> common ground (which everyone seems to want).
>
> Standby current will reduce to 33% of nominal 1 second after the
> issuance of the last step. It will build up to 100% of nominal
> milliseconds after the issue of a new step.
>
> The interface will change from a 3 terminal one to 4 terminals. The
> STEP and DIRECTION input opto-isolators will have two independent
> terminals each so they can be operated common ground or common

+5VDC.

>
> The DISABLE function will move to the current set input. Shorting

the

> current set resistor will now disable the drive.
>
> Any comments or objections to this change will be appreciated.
> Otherwise I will be letting the new circuit layout for fabrication
> next week.
>
> The 160VDC versions of the G201 and the G320 are moving along. When
> they are near being finished, I will post something about them.
>
> Mariss