Re: [CAD_CAM_EDM_DRO] G201 Improvements

One other suggestion is to replace the LED on the board with a polarized two
pin header so that one can bring the LED out to a panel without having to
add circuitry.
All in favor say Aye!
Dan
-----Original Message-----
From: Mariss Freimanis <geckohall@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Saturday, October 28, 2000 8:28 PM
Subject: [CAD_CAM_EDM_DRO] G201 Improvements

>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
>
>
>
>
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