Re: [CAD_CAM_EDM_DRO] Encoder question - Rutex concerns

I would be careful with Rutex. Be certain that you have ALL
specifications you need before you purchase.

I bought seven of their DC-brush servo drives, and have not been able
to implement an SPI connection. Several attempts to contact Rutex
have been answered with assurances that I would get information,
followed by delays and silence. At one point, they claimed to be too
busy to send me the timing specification for their SPI implementation.

I choose Rutex over Gecko because of the SPI interface. Knowing the
lack of support or even documentation available, I would not buy Rutex again.

Needless to say, I am not happy.

-- Carl


At 01:06 AM 3/9/2006, Peter Homann wrote:

>Brian,
>I think Rutex sell brushless DC servo drives. http://www.rutex.com
>
>Cheers,
>
>Peter
>
>Quoting BRIAN FOLEY <ka1bbg@...>:
>
> > Ok, thanks i purchased the motors because of price and
> availability hoping i
> > could use the encoders. they draw 17 to 40 ma so should be ok on a Gecko
> > drive. the motors are 3 phase brushless and i havent seen but a few pricey
> > control drives for them with step and drive inputs.
> > 1.5 amp motors that i wouldnt add a 350 dollar drive card for each one, i'd
> > get 700 ozin motors used and a gecko and be far ahead in the power
> > department. thanks, brian f.
> > ----- Original Message -----
> > From: "Dan Mauch" <dmauch@...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Wednesday, March 08, 2006 8:40 PM
> > Subject: Re: [CAD_CAM_EDM_DRO] Encoder question
> >
> >
> >> First you should check to see what the current drain is for that encoder.
> >> The G320/340 can only supply 50 ma. Many encoders typically draw 75-125MA.
> >> You can still use them but you would need an external 5V power supply
> >> capable of handling the current for all the servo motors equiped with
> > those
> >> encoders. Then don't forget to add the 470 ohm resistor between the G320
> >> Enc+ and enc - terminals.
> >> But from your post you are asking for a a step/direction brushless. servo
> >> amp. Brushless servo motors wouldn't work with the G320/G340's
> >> Dan Mauch
> >> low cost stepper and servo motors.
> >> cases for Gecko drives
> >> kits and assembled 3-4 axis drives
> >> www.camtronics-cnc.com
> >> www.seanet.com/~dmauch
> >> ----- Original Message -----
> >> From: "BRIAN FOLEY" <ka1bbg@...>
> >> To: <Cad_CAM_EDM_DRO@yahoogroups.com>
> >> Sent: Wednesday, March 08, 2006 2:42 PM
> >> Subject: [CAD_CAM_EDM_DRO] Encoder question
> >>
> >>
> >> > Hi, bought some servo motors with "Qeds" encoders, problem is they are
> > not
> >> > Qeds but Dunkermotoren RE30-2-500+t15v........
> >> > these are 5 volt, incremental square wave 500 pulse per rev with
> > a,b,/a,/b
> >> > quadrature outputs. can i use these for encoder for say a Gecko drive
> >> > using just a,b outputs?
> >> > Any one have a step/direction brushless servo drives for up to 5 amps i
> >> > might be interested.
> >> > thanks, brian f.
> >> >
> >> >
> >>
> >>
> >> Addresses:
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> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
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> > If you wish to post on unlimited OT subjects goto:
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> > 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
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>Addresses:
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>owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
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>Moderator: pentam@... indigo_red@...
>davemucha@... [Moderators]
>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
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>Yahoo! Groups Links
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