Re: G201-IP

I am one who suffered catastrophic damage from some sort of failure.
The 201a actually blew up, no really, parts were found in the bottom
of the case.

Before I would spend $60.00 on 4 drives, I would considder my
options, and may just flip a coin on the chances of making a mistake.

What I would probably do if I wanted to get more units would be to
get one IP unit and use that to test each circuit as I installed
them.

I would like to have a lower price option and the IP unit.

Savings? $45.00 in pocket.
Extra work? add $100.00
Peace of mind ? Priceless !

Dave

--- In CAD_CAM_EDM_DRO@y..., "James Cullins" <jcullins@c...> wrote:
> I agree.
> Jim
> ----- Original Message -----
> From: "Jim Brown" <jagco1998@y...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Saturday, November 23, 2002 4:38 PM
> Subject: Re: [CAD_CAM_EDM_DRO] G201-IP
>
>
> >
> > I think that a user of any of your fine products would want such
a safety
> net, either new or experienced.
> > I know that I would gladly pay the extra $15 for each drive,for
this extra
> feature, as Im sure that many, many other people would too.
> > You should instill this protection in all of your products,as I
cant see
> how anyone wouldnt want it. Everyone makes a "boo-boo" now and
then, and it
> sure would save some money in the long run if you purchased a drive
with
> this idiot proof solution.
> > Mariss, I say go for it and up the price of the drive to
compensate for
> the extra components. Everyone knows that what they get when they
purchase a
> Geckodrive is far worth more than the asking price anyway.
> > There is just not a better solution for a low cost-high quality
DIY motor
> drive anywhere in the world than a GeckoDrive product, bar none!
> > Regards,
> > Jim
> > mariss92705 <mariss92705@y...> wrote:Hi,
> >
> > I have breadboarded a protection circuit for the G201. It protects
> > against:
> >
> > 1) Shorting any or all motor wires to ground.
> > 2) Shorting any motor phase to phase.
> > 3) Miss-phased motors (series or parallel).
> > 4) Miss-connected motors.
> > 5) Internal motor winding shorts (serial-killer motors).
> > 6) Motor connects/disconnects while under power.
> > 7) Motor winding short to motor case.
> > 8) Unused 6-wire motor leads touching/shorting anywhere.
> >
> > These are the most common drive failure problems (>95%) that we
see
> > for return/repair.
> >
> > The circuit works internally on the "DISABLE" input (term. #7) of
the
> > drive. Any of these faults would latch it low (disable). It would
> > then require a recycling of the power supply to clear the fault.
> > The "Fault" indication would be a "0" on the "DISABLE" terminal.
> >
> > The "IP" in G201-IP stands for "current protect", or as a cruel
> > individual here pointed out, it can also read "Idiot Protect".
> >
> > This circuit (about 20 additional components to the existing 136)
> > would require a major revision (REV-8). Of course it would be 100%
> > compatible, pinout, function and form, with all previous drives.
> >
> > What I am throwing out to the group here is:
> >
> > (1) Is it worth the effort to do this?
> > (2) Is it worth a $15 premium to do have this protection? That is
the
> > all-up cost of the additional parts.
> >
> > We will continue to produce the G201 regardless if there is or is
not
> > a G201-IP. It will not in any way supplant it.
> >
> > The G201-IP might be useful for those that are using the drive for
> > the first time and want a little extra margin against Mr. Murphy
and
> > his Law. Later, after everything has settled out, stock G201s
would
> > serve as well. Others that are a little more tense/prudent may
wish
> > to have it as protection against Mr. Murphy should he call
uninvited
> > at a later time.
> >
> > If I'm going to do this, my schedule has it for the end of the
first
> > quarter. What I'm looking for is feedback if this is
wanted/needed.
> >
> > Thanks.
> >
> > Mariss
> >
> >
> >
> >
> >
> >
> >
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> > http://groups.yahoo.com/group/jobshophomeshop I consider this
to be a
> sister site to the CCED group, as many of the same members are
there, for OT
> subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
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> >
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