RE: [CAD_CAM_EDM_DRO] rapid G210 'overdrive' rates using logic on header blocks

> Will the torque drop-off matter if you are 'rapiding' through thin air?

Yes. You will reach a point where the motor will just not be able to
accelerate to any greater speed and if you try to go faster it will stall.
Don't know what that speed will be if you limit the drive to 80 V max, but
with the stock drivers (they are something like 160 V drives) the maximum
rapid was 25 ipm. Lower voltage will even with a microstepping bipolar drive
will likely lower that number even more.

Tim
[Denver, CO]

> My unstated assumption was that the 'overdrive' was for low-load
> high speed movements (just like an overdrive gear in your car
> transmission).
>
> In my case, my upper limit is around 8K steps/sec. Does the Series II
> have a 5 TPI screw and a 180 step stepper? With 1/10 stepping only,
> that would imply around 819/(180*5) = .91 inch/sec = 54.6 inch/minute
> rapids (tolerable, but not great).
>
> For example, 'overdriving' to 1/2 steps (from 1/10 steps) increases
> that rapid rate up to 273 inches/minute.
>
> Doug Fortune
> http://www.cncKITS.com
>
>
> FAQ: http://www.ktmarketing.com/faq.html