Re: [CAD_CAM_EDM_DRO] Re: Bullet-Proof G201 / G210

----- Original Message -----
From: <mariss92705@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, February 08, 2003 6:23 PM
Subject: [CAD_CAM_EDM_DRO] Re: Bullet-Proof G201 / G210


> Terry,
>
> That's the whole idea. Analyzing returned drive data is eye opening;
> first-time users average 10% while at the other extreme OEM users of
> 1,000 or more a year return less than 0.1%. That is a 100:1 range yet
> it's the same drive in both cases.
>
> Of the 10% group, damage is primarily blown MOSFETs (>62%), the 0.1%
> group has random component failures unrelated to the power section
> (>85%). The sample size for the latter is very limited simply because
> so few are returned for repair.
>
> Mariss
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "James Owens"
> <wotisname@l...> wrote:
> > Hi Mariss,
> >
> > I for one will be buying Gecko's in the future to go on another
> lathe I'm
> > building and what you propose makes sense. I could fit the new
> versions get
> > it all working and the move them onto another project replacing
> them with
> > the cheaper 201/210's. I'd go for it.
> >
> > Regards,
> >
> > Terry
> >
> >
> >
> > > Hi,
> > >
> > > I am soliciting input from the group.
> > >
> > > Some ideas came together today that seem very exciting to me. Let
> me
> > > explain:
> > >
> > > The G210 that many of you are using is a 2-PCB drive, there is the
> > > G201 plus the G901 multiplier board. It occured to me as I was
> > > working on the short-circuit protected (IP) version to completely
> > > split the drive into a 2-board version.
> > >
> > > Board (1) would be the power section with the motor driving
> MOSFETs
> > > and a complete short-circuit, miss-wiring, load dump, over-
> > > temperature and over-voltage protection circuitry on it.
> > >
> > > Board (2) would combine the microstep logic and the pulse
> multiplier
> > > logic. There would no longer be a differentiation between a G201
> and
> > > a G210.
> > >
> > > The new drive would keep the same form factor and connector
> pinout.
> > > You could drop it into the same location and it would work just
> like
> > > the G201s / G210s did before transparently. Once the application
> was
> > > sorted out, you could use the cheaper 201s / 210s in the future,
> they
> > > will not be discontinued.
> > >
> > > The features will be:
> > >
> > > (1) A huge advantage will be it will be very difficult to destroy.
> > > Should you still find a way to kill it, the logic board would
> survive
> > > and all you would replace (at half the cost of a new drive) would
> be
> > > the power section.
> > >
> > > (2) The power section would emulate an L298 and would replace the
> > > proposed G298 on our website for those that want to "roll their
> own".
> > >
> > > (3) All adjustments like the "Adjust" trimpot and the G210 option
> > > header would be settable without removing the cover and would be
> > > located on the top face of the drive for convenience.
> > >
> > > At this point I'm looking for things, features and aggrevations
> > > people would like to change or add. This is a "clean sheet"
> redesign
> > > so now is the time for it.
> > >
> > > Thank you in advance for your suggestions.
> > >
> > > Mariss
>
>
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