Re: Safety -- servo vs. stepper

Servos are not always driven by amps like the Gecko. The more
comercial amps often support +/-10V velocity input and give a
quadrature encoder output. The position loop is then closed in the PC
so feed forward and other multi axis input can be used. The servo-to-
go card is an ISA card with DAC outputs, qudrature encoders, and I/O.
EMC knows how to use it, Mach 2 does not. The trajectory planner in
Mach 2 is open loop.

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, <jess@p...> wrote:
> Jon mentioned the Servo-To-Go ISA PC board
>
> What does the Servo-To-Go card attempt at replacing taking into
> consideration that
> generally:
>
> Servos are driven by say geckos or like
> and the geckos are driven by a breakout board connected to your
parallel
> port under the control of EMC or MACH2.
>
> The picture I have in my head is that Servo_To-Go would replace the
Parallel
> Port? Is this correct?
>
> Assuming it is does Mach2 or EMC know how to talk to Servo-To-Go?
>
>
> Regards
> Jess
>
>
> ----- Original Message -----
> From: "Jon Elson" <elson@p...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, May 22, 2004 1:47 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Re: Safety -- servo vs. stepper
>
>
> >
> >
> > Leslie M. Watts wrote:
> >
> > >What I hope a discussion like this generates is really an
> > >informal FMEA (failure mode effects analysis).
> .....snip
>
>
>
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