RE: [CAD_CAM_EDM_DRO] stepper controller - help
Posted by
Tom de Witt
on 2002-11-16 11:52:40 UTC
Yes please! A short tutorial on this topic would be very helpful.
Tom
-----Original Message-----
From: JanRwl@... [mailto:JanRwl@...]
Sent: Saturday, November 16, 2002 1:24 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] stepper controller - help
In a message dated 11/16/2002 8:36:48 AM Central Standard Time,
dmauch@... writes:
members of our group are more "machinists" than "E.E.'s", so they clearly
have NO clue how a stepper with windings rated at, say, 4 amps, 3 volts,
need
a 24 to 80 VDC supply. The concepts of "current-limiting", voltage-dropping
either via the nasty huge "L-R resistors" of the old "six-wire unipolar
days"
or the more recently-espoused "chopper drive" technique float way above most
of our heads.
Now I readily admit I am too ignernt to explain all this adequately in few
words, but I am CERTAIN some E.E.'s in here like you, Mariss, etc., can do
so
admirably. Thus, it seems a short "tutorial" on what L-reactance does when
stepping-rate exceeds three or four steps per second, and how modern drives
"deal with that" (and why 24 VDC or more is needed in a supply for "four
volt
windings", etc.) would be very, very useful to us "in here"!!! Am I right,
guys?
Jan Rowland, old troll
[Non-text portions of this message have been removed]
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OFF Topic POSTS: General Machining
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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Tom
-----Original Message-----
From: JanRwl@... [mailto:JanRwl@...]
Sent: Saturday, November 16, 2002 1:24 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] stepper controller - help
In a message dated 11/16/2002 8:36:48 AM Central Standard Time,
dmauch@... writes:
> Not quite correct. The 65V is the maximum voltage that the manufacturerecommend
> recommend those motors to run at. Those motors have a per phase resistance
> of 1.52 ohm so the actual voltage would be about 3.5V. So I would
> a 36VDC power supply up to 65V maximum. But if you use the L298 then you'dDan: For quite a time, now, I have been slightly frustrated that 98% of the
> better stick with the 35VDC power supply.
members of our group are more "machinists" than "E.E.'s", so they clearly
have NO clue how a stepper with windings rated at, say, 4 amps, 3 volts,
need
a 24 to 80 VDC supply. The concepts of "current-limiting", voltage-dropping
either via the nasty huge "L-R resistors" of the old "six-wire unipolar
days"
or the more recently-espoused "chopper drive" technique float way above most
of our heads.
Now I readily admit I am too ignernt to explain all this adequately in few
words, but I am CERTAIN some E.E.'s in here like you, Mariss, etc., can do
so
admirably. Thus, it seems a short "tutorial" on what L-reactance does when
stepping-rate exceeds three or four steps per second, and how modern drives
"deal with that" (and why 24 VDC or more is needed in a supply for "four
volt
windings", etc.) would be very, very useful to us "in here"!!! Am I right,
guys?
Jan Rowland, old troll
[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/
Discussion Thread
Boris Maraz
2002-11-16 04:57:10 UTC
stepper controller - help
Dan Mauch
2002-11-16 06:37:24 UTC
RE: [CAD_CAM_EDM_DRO] stepper controller - help
jeffalanp
2002-11-16 08:35:19 UTC
Re: stepper controller - help
JanRwl@A...
2002-11-16 10:23:58 UTC
Re: [CAD_CAM_EDM_DRO] stepper controller - help
Tom de Witt
2002-11-16 11:52:40 UTC
RE: [CAD_CAM_EDM_DRO] stepper controller - help
vrsculptor
2002-11-16 12:19:19 UTC
Re: stepper controller - help
William Scalione
2002-11-16 17:59:57 UTC
Re: [CAD_CAM_EDM_DRO] stepper controller - help
John Johnson
2002-11-17 09:09:57 UTC
Re: [CAD_CAM_EDM_DRO] stepper controller - help
foxwhole2000
2002-12-06 03:15:09 UTC
Re: stepper controller - help
jeffalanp
2002-12-06 11:32:36 UTC
Re: stepper controller - help
jagco1998
2002-12-06 15:54:23 UTC
Re: stepper controller - help
George Erhart
2002-12-06 16:15:28 UTC
Re: [CAD_CAM_EDM_DRO] Re: stepper controller - help
jeffalanp <xylotex@h...
2002-12-06 16:19:37 UTC
Re: stepper controller - help
George Erhart
2002-12-06 16:47:47 UTC
Re: [CAD_CAM_EDM_DRO] Re: stepper controller - help
foxwhole2000 <foxwhole2000@y...
2002-12-06 19:27:45 UTC
Re: stepper controller - help
jeffalanp <xylotex@h...
2002-12-06 20:24:59 UTC
Re: stepper controller - help
Brian
2002-12-07 11:01:41 UTC
Re: [CAD_CAM_EDM_DRO] Re: stepper controller - help
George Erhart
2002-12-07 12:32:18 UTC
Re: [CAD_CAM_EDM_DRO] Re: stepper controller - help
Brian
2002-12-07 14:32:06 UTC
Re: [CAD_CAM_EDM_DRO] Re: stepper controller - help