Re: [CAD_CAM_EDM_DRO] G201-IP

----- Original Message -----
From: "Jim Brown" <jagco1998@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
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@...> 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
>
>
>
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> 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
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up now
>
> [Non-text portions of this message have been removed]
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> 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
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>