Re: wiring Gecko drivers

Jan, thanks! I think that will solve my problem. Tonight I rewired
my z axis and burned the Gecko drive. Tomorrow I will order a new
210 and the multiplex chips for the other 2 201s to convert to
210s. Does it make sense that the old Bridgeport motors can't
handle the high rate or is it a problem of how I wired the motor.
Do you think the 201s should be able to move a 200 step rev motor at
over 60 ipm. Mine now stall at 20 ipm.

thanks
keith clark
clarkfamily5@...

--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@A... wrote:
> In a message dated 8/16/2004 11:13:59 PM Central Standard Time,
> mail@t... 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
>
>
> [Non-text portions of this message have been removed]