RE: [CAD_CAM_EDM_DRO] Solved [was Re: supertech]

I've also spoken with Dennis in the past. The guy really does know his
stuff.
PK

-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Lurch
Sent: Wednesday, 22 August 2007 8:38 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Solved [was Re: supertech]

So I spoke to Dennis Bohlke at Supertech directly. He told me of an
undocumented subroutine that exercises the steppers, a production
burn-in type of thing. Then after some more discussion, he asked
what operating system I was running.

From what he tells me, it turns out that the version of SuperCAM I
have, v3.6, apparently never was intended to run under Win95 or
newer.

This despite the fact there is both dossetup.bat and winsetup.exe on
the CD. Perhaps the winsetup.exe is for win3.1 systems which still
run the DOS kernel.

Dennis DID offer to fix my controller if there were an issue with it,
and also offered me a new version of SuperCAM for $95.

So for now I merely took my dedicated p233/32mB lunchbox and
converted it to DOS.

Preliminary indications are excellent.

Will post more as it develops.

Alls well that ends well.

Lurch

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Paul Kelly" <tech@...> wrote:
>
>
> I think it would be nice to start recording what performance people
are
> seeing
> from the various drivers. I am getting reports of 400 to 450mm/min
on the
> Taig
> table using Xylotex drivers at 28V-bipolar while I am getting a good
> 600mm/min
> with the Taig/MicroProto controller running 60V-unipolar. The
> Taig/MicroProto
> closed loop controller will give 1500mm/min with the same stepper
motor
> driver. I have yet to get the Chinese drivers hooked up to test
them, but I
> have had the L297/298 pair running at 24V and giving 300mm/min
driving one
> pair of the unipolar wired taig motors.
>
> [Paul Kelly] OK, so you define performance as rapid speed. Or, in
the
> context of a discussion on driver boards, the rate at which the
drive can
> commute the motor.
>
> This obviously all depends on the 'load', motor, power supply and
driving
> software,
>
> [Paul Kelly] Actually, the single biggest factor affecting rapid
speed is
> ballscrew pitch. Apologies to those who've heard this rant before
but..
> If you double the pitch of your ballscrews, your stepper system
with go at
> least twice as fast.
> After ballscrew pitch, motor inductance would be second. I know
someone
> people who went shopping for some NEMA23's and said; "Why would I
buy a
> 250oz.in motor when I can get a 450 for only a few $ more!" Said
person
> also defines performance as rapid speed and refuses to accept that
his
> machine would go faster on the 250oz.in motor.
>
> but I'm sure we can start to put together some realistic figures for
> the various options of driver, and perhaps pull out combinations
that simply
> don't go, and onces that work well?
>
> [Paul Kelly] I think your idea is good. If nothing else it gives
people a
> reality check for their machines. You should compile the data and
put a
> spreadsheet into the files section??
>
> For my part.
> 9x20 Lathe, NEMA34 300Oz.in 297/298driver 35V 5TPI ballscrew 5m/min
>
> 12"x20" Router, NEMA23 250oz.in A3977(same as xylotex) driver, 20mm
pitch
> ballscrew 15m/min
> [Paul Kelly] PK
>
> --
> Lester Caine - G8HFL
> -----------------------------
> Contact - http://home.lsces.co.uk/lsces/wiki/?page=contact
> L.S.Caine Electronic Services - http://home.lsces.co.uk
> MEDW - http://home.lsces.co.uk/ModelEngineersDigitalWorkshop/
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>
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