Re: [CAD_CAM_EDM_DRO] Re: wiring Gecko drivers

In a message dated 8/16/2004 11:13:59 PM Central Standard Time,
mail@... writes:
It seems from the Gecko website that instead of fewer pulses the 210 can put
up to 10 times more ( up to 20000 steps per revolution), so that will not
solve my problem.<<
I do recall that wording is confusing. The "times 10" is the maximum number
of "steps" the 210 can output, per pulse received from your controller. But
these are "microsteps". Think of them as "bumps" on a sine-wave. With the
"times-10" setting, the controller (computer) has to output 2000 pulses to make a
"200 step" motor rotate ONE turn. Dunno WHERE you got the 20,000 number.
The 201 can ONLY take in 2000 steps for one full turn, but the jumpers under the
cover on the 210 can be changed for 200, 400, 800, and 2000 pulses per turn
(as I recall). The Gecko drives are nifty in that they will STILL ouput this
"microstepping" even if strapped for only 200 steps per turn, so the rotation
is less choppy, but only 200 pulses IN make 200 steps OUT. Yeah, took ME, a
primitive old "200 step guy" a couple hours to figure this out in my tiny head,
but finally, "I'm there!".
Am I correct in this assumption?<<
No.
Or is it that it can go down to 200 steps per rev which would be better
for me.<<
As I said, the 210 CAN do this. The 201 is "stuck with" 2000 steps per turn,
so the computer has to "output" pulses ten times as fast for a "200-step
motor", but this has advantages in many applications! Smoother, finer
resolution/precision, etc. Requires "patience, and knowin' whatcha doin'!"

Jan Rowland


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