Re: [CAD_CAM_EDM_DRO] Please help Permanent Magnet Field Servo Motor???????????

On 3/13/06, Babar <riet91@...> wrote:
>
> Two wires are the AC input of Drive 250 VAC, The other
> two wires are shorted at the motor , the other end of
> the motor is connected to the Ground.
> The response of this drive is very slow and it is
> causing troble in the form of large following error,
> any suggestion to improve the Drive's response? what
> if I connect the two wires that are short at the motor
> to the two ends of motor instead of connecting the
> motor's one end to the ground?
>
> Why the line reactors are needed with servo dynamics
> drive? I understand that these are simple inductors
> (am I right?)What is the selection criteria for these
> reactors?
>
> Regards
>
> Babar
>
> --- Jon Elson <elson@...> wrote:
>
> > Babar wrote:
> >
> > >Hi All,
> > >
> > >Can anyone give me some info about "Permanent
> > Magnet
> > >Field Servo Motor" Is this a AC servo or DC sevo?
> > >
> > >I have these motors (from Gettys) in a milling , I
> > >want to change the SCR drives with Servo dynamics
> > DC
> > >drives, can I do this?
> > >
> > >There are 4 wires going to the motor from Drive.
> > >
> > >
> > Hmm, odd. What are the 4 wires? The label seems to
> > indicate
> > it would be a brush servo motor, and only need 2
> > wires.
> > One more might be a safety ground. It is also
> > common
> > to have a temperature sensor in the motor to put the
> > drive on
> > reduced current if the motor gets hot.
> >
> > Can you check if these wires are connected together
> > at the drive
> > end? Sometimes they run 2 pairs of 2 wires in
> > parallel, because
> > the cable can bend more easily. In this case, a 4
> > brush motor
> > may have each brush connected to one wire. Opposite
> > brushes
> > on the motor are connected together at the drive
> > end.
> >
> > Jon
> >
> >
> > 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@..., timg@...
> > 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
> >
> >
> > Yahoo! Groups Links
> >
> >
> > CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> >
> >
> >
> >
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>
> 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@...,
> timg@...
> 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
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>


[Non-text portions of this message have been removed]