Hello guys thanks for the attention, I'm making tests with a telemecanique VFD that has the +/- 10 volt analog input (as far as i know is a vectorial vfd but i don't know if it's the same as a flux-vector), i tried both using as a spindle and as an axis, and worked ok... i didn't tune quite well the pid since it was a rapid test so, i had oscillation but, this is the main question that i have about the spindle/axis switching:
When i tried to move the motor in axis mode with my hand, immediately the motor turned in the oposite direction to stay in the position. So i'm thinking in how i can make with hal the switching because if i use the spindle the axis will refuse to lose its position so first the axis will try to run against the spindle turning and if not i'll get a following error, so that makes me think that i have to deactivate the axis during the spindle work, but if i do that i lose the position of the axis so i have to make a new homing sequence and wich is not possible in auto mode and so on... Well the thing that comes to my mind is to make something in hal and use the index pulse to reset the C axis to zero everytime the pulse is activated. So the axis count will go from 0 to 360 degree and then start all over again from 0. Well it's just an approach to what i'm trying to do, i really appreciate your help as always :) so correct me if i'm saying something wrong please. Best regards. Leonardo. 2009/11/21 Stuart Stevenson <stus...@gmail.com> > On Fri, Nov 20, 2009 at 10:26 PM, Leonardo Marsaglia < > leonardomarsagli...@gmail.com> wrote: > > > Hello guys, i've already asked something similar in the forum but this is > a > > simpler.. > > > > I read about the retrofit of the mazak that some of the guys made, and > i'm > > making tests with an AC motor with a vfd and an encoder.. > > > > So i was wondering if i can make the spindle turn and stop in a given > > angle? > > > > > > It would be could if i can make the spindle turn degree by degree, but i > > don't see a gcode to do that. > > > > I think most machines that position the spindle will reconfigure the > system > to use the spindle as a C axis. Then they can command the C axis angle for > position. > > > > Well thanks in advance for your attention. :) > > > > Regards. > > > > Leonardo. > > > > > ------------------------------------------------------------------------------ > > 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 > > > > > > > -- > Few will listen, > Of the few who listen, fewer still will understand, > Understanding does not mean believe, > Of the handful who believe, most may not know what to do, > Those who even know, how many will actually do ? > And the rare ones who have done it....... > Need not listen anymore. > > you can lead a person to knowledge > but you cannot make him think > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
