A 200 step motor is a good thing if you have a five pitch lead screw (like on a Bridgeport milling machine) and you want each step to be a thousandth of an inch. That's particularly true if you were back in the days of paper tape and minimal computing ability.
Ken Ian R Upton wrote: > Gentlefolk, > > I added a pointer to the shaft of the motor (like a clock hand) so I > could see what the motor was doing. > > I then set the current and acceleration values. > > I then ran a series of tests at various steps/rev and fiddled the > velocity until I could get stable performance (consistent counts, no > erratic jumping, return to the initial count, etc). > > The following table shows the results, these are the maximum velocities > for stable performance. > > Current 0.5A for all tests (emperical and from one vague reference in > the Internet ) > > > > > > > > > Accelleration > 10MM/S^2 for all tests > > > > > > > > > > > Step/rev 50 100 200 > > > > > > > > > > > > Max Velocity 2.9 1.7 0.9 > MM/S > > > > So it looks like I have a 200 step motor........... > > Ian > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
