Re: e-stop sceme

Mike,

I'm thinking along the lines of:
- separate 12V power supply for EPO / E-Stop
- series connected EPO switch chain (one on PS / driver box)
- primary power of main TX removed by de-energized relay
- capacitors on secondary discharged by Mariss' circuit (in files)
- drives disabled
- control lines (step / dir) disabled
- EPO signal (active low) available for processor

Let's both come up with a design, and let this forum rip 'em apart
as we both will have different ideas. We can then merge our efforts
into a single project for the files section. I'm using the G201
drivers, so much the better if you are using a different set as we'll
have two examples.

What do you think?

Tony

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "zbushz" <mbush@l...> wrote:
> OK. I have Geckos and Bob Campbells breakout board.I have a seperate
> 50v power suppy. Now I am starting to put the whole thing together.
> The first steps are powering everything up. I think the second step
> should be arrainging for e-stop. I would like a normaly closed red
> mushroom, that when opened will remove power to everything. If I put
> relays on the power to the board and the incomeing dc power, would
> that be enough. Is it good pratice to power down this way. Do I need
> to be concerned with voltage generated by the motors coming to a
stop.
> I would expect to use this button rutinely to put the machine in a
> safe state for tool and part changes. Any advice will be appreciated
> take care
> Mike Bush