RE: [CAD_CAM_EDM_DRO] Re: AC servos

Sorry Graham, because you had mentioned Gecko's I assumed they were AC
servos.



If they are AC though and you already have the Omron controllers with an
analogue input then I would think a pixie card would produce the necessary
signals.

Have a look at www.skyco.com <http://www.skyco.com/> , the guy there is also
quite helpful though sometimes it takes him a couple of days to reply to an
email.



My mill has big DC servos that virtually all the DIY cards for Mach have
failed to work with properly. I am going back to commercial analogue servos
and Pixie cards.



Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Graham Stabler
Sent: 06 July 2007 11:13
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: AC servos



--- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com, "Mark Vaughan" <mark@...> wrote:

>
> They are definitely analogue input and your motors at 100W and 200W
> are probably small enough to run at reduced voltage (and thus speed)
> on a gecko,

How can you run an AC servo on a DC servo drive?

>I would use it in analogue mode with a set of pixies P100 cards to
>convert step direction to analogue

I hadn't seen these but I was beginning to wonder why not, that's a
good idea and may open other options, I've seen some of the older
Omron drives go for peanuts so combining them with a pixie might make
a workable solution.

Graham





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