On Friday 08 May 2020 12:35:34 andy pugh wrote: > On Fri, 8 May 2020 at 16:58, Gene Heskett <ghesk...@shentel.net> wrote: > > Humm, makes me ask, Andy. I am useing some hal trickery to actually > > sequence this turnaround and to profile it to where z can follow. > > Because I am blocking the reversal signal, using it to stop the > > motor at a controlled decel by a limit3 allowing the encoder time > > between pulses to detect when it has essentially stopped, then the > > reversal is allowed thru to the controller, the chosen speed is > > re-applied to the limit3 and the motor is ramped back up to speed by > > the output of that limit3. > > You can safely limit3 the spindle command, but you mustn't filter the > spindle position signal, as that will cause a phase lag, and a sloppy > thread.
I did do that for a short time, and found it made the problem worse. So that codes been gone and a really high definition encoder installed. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
