RE: [CAD_CAM_EDM_DRO] EMC step rate configuration

This is the exact purpose of the G340 pulse multiplier drivers.

Are you running freqmot or steppermot? My guess is you are using freqmot. If
so, switch to steppermot. It is much better in regards to step rates on
slower systems and the servos don't require the more even pulse train that
freqmot will give you. If you make this change, remember to comment out the
PERIOD setting as it will hang steppermot.

Tim
[Denver, CO]

> I'm finishing up my grizzly/EMC conversion... How cool it feels when
> you
> jog your first axis!
>
> Now I'm thinking I've made a big design mistake: I used some surplus
> motors
> with pretty high resolution encoders, which I'm driving with the
> wonderful gecko G320's, and are coupled to 10 TPI acme screws
> with 2:1 reductions. Working through the math, I end up with
> MANY MANY (Way too many!) steps per inch. Way more than I
> can use... (like 100000+ steps per inch)
>
> Configuring EMC, I'm finding the relationship between MAX_VELOCITY
> and INPUT_SCALE to limit my max speed. I'm using the default
> PERIOD, etc setting in EMC on a K6-266. Obviously, if I set
> the velocity too high, EMC hangs during startup, since I've
> set things faster than the pulses could be output.
>
> Short of changing encoders/motors (which I've done temporarily on
> my Z axis, just to get a tolerable speed for tool changes), what are
> my options? I don't care about speed while I'm machining much (it's
> not a production type machine for obvious reasons), but jogging, etc
> is slow.