Re: [CAD_CAM_EDM_DRO] Geckodrive question

Thank you both for your help.

Rick

----- Original Message -----
From: "Dan Mauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, December 19, 2001 5:08 PM
Subject: RE: [CAD_CAM_EDM_DRO] Geckodrive question


> Other than what Tim said there are two difference.
> 1. The G210 can be set for common signal ground or +5. The G201 is
> common +5
> 2. The G201 would require a standard 200 step per rev motor to receive
> 2000 steps per rev. If you have software that limits your step and
> direction output to a value such as 8000 SPS then the most speed you
> could get would be 4 Revs per second or 240 RPM at the stepper. With the
> rate multiplier in the G210 set it would be 8000/200=40 RPS or 2400 RPM
> if the steppers and the power supply would support it. So this is a
> trade off. Some software programs will output 55000 sps so the G201 run
> at 55000/2000=27.5 RPS or 1650 RPM.
> But with EMC you should be able to get great speed out of the G201's
> See my web site at www.seanet.com/~dmauch for good prices on either
> Choose wisely.
> Dan
>
> -----Original Message-----
> From: Rick Miller [mailto:apollo@...]
> Sent: Wednesday, December 19, 2001 11:57 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Geckodrive question
>
> Hi,
> I'm trying to decide on which controller to use for a CNC mill I'm
> designing. I think I'm going to use a Gecko, but I don't know whether to
> go with a 201 or a 210.
> As I understand it, the 201A model will output one microstep for
> each full step impulse it receives.
> The 210A model, with the step pulse multiplier set at X1, will
> function identically to the 201A (?); that is, one full step pulse input
> would produce one microstep output to the stepper motor.
> I am assuming I'm missing something here, as I can't understand why
> one would want to pay more for the 201A model if the less expensive 210A
> can perform the same task. Could someone please explain if I'm not
> understanding this correctly?
> Is this something that is dependant upon the choice of software used
> to send the step pulses? I'm (so far) planning on running EMC. Is there
> a variable that can be changed in EMC to tell it to expect the machine
> to move X inches for each step pulse sent to the controller? In other
> words, if I change the step pulse mulitplier in the 210A model, is there
> a way to tell the software to compensate for it?
>
> Thanks,
> Rick
>
>
>
>
> [Non-text portions of this message have been removed]
>
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