Re: DRO

Doug...

Not to belabor the point, how do you connect your encoders...directly to the shaft of the servo motor or to the ball screw or table?? // Are you using EMC? If so are you using STG card or something similar to provide encoder feedback to the software? // I like your big beefy power supply. May purchase one in near future since my Z axis is quite heavy, probably in the hundreds of pounds.

Thanx...Richard.

> >
> > Doug...
> >
> > I understand your point re: high resolution ie 8-10k/in. On your
> > lathe how do you interface the encoder which I assume is a rotary
> > encoder?? Also are you using steppers or servos...
>
> The http://www.usdigital.com rotary encoders feed back to the
> http://www.geckodrive.com G340 servo motor driver.
>
> > and what hardware interface +/or amps do you use.
>
> The G340s are fed by one of my 1.5KW BEaST power supply kits,
> (60VDC * 20 Amp version) because the motors are 60VDC 20A continuous
> but 90A peak. The G340 handles it fine (2 ips on the 1500 lb Z axis).
> I guess when both motors are momentarily pulling 20A, the reserve comes
> from the big 47,000uF caps.
>
> > Thanx...Richard in Michigan.
>
> Doug Fortune
> http://www.cncKITS.com
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