As Gene is suggesting , here <http://linuxcnc.org/index.php/english/forum/16-stepconf-wizard/27293-solved-tuning-stepper-motor-with-gecko-201-driver?start=10> is a discussion on the forum regarding problems with "steps" and Gecko Drive . A question for you ... the router is brand new (I mean that you have finished the setup) or is a "already working" machine ? This question is to understand if the machine was working fine before and later start with the problem you are mentioning.
Alex On Thu, Sep 4, 2014 at 5:21 PM, Gene Heskett <ghesk...@wdtv.com> wrote: > On Thursday 04 September 2014 11:07:07 Viesturs Lācis did opine > And Gene did reply: > > Hello! > > > > I have a strange situation: > > Stepper motor of Z axis on a cnc router is losing it's position - > > doing a series of numerous holes in material will end up with various > > depths of holes. > > > > The strange part is: > > 1) for each time, when machine is running, it will lose position only > > in one direction; if holes are getting deeper, then they only get > > deeper, not the other way; > > 2) the direction of "drift" will change randomly as machine is > > restarted and only then; simply running another g-code file will not > > change the direction of "drift"; > > > > There is Nema23 stepper motor and Gecko stepper driver. > > Motor cable is checked for loose contact, step/dir signal lines are > > checked for loose contact, ballscrew and linear rails are checked for > > any damage to cause extra resistance in particular direction, the > > clutch between motor and ballscrew is checked not to slip. > > > > I am totally out of ideas, where to look. Has anyone ever experienced > > anything like that? What puzzles me most is the consistency to > > maintain direction of "drift" and yet randomly change, when whole > > system is restarted, so any suggestions will be appreciated. > > > > Viesturs > > Can we assume you have lengthened the dirsetup and dirhold settings? > > I don't have any gecko's, but this sure seems to be an ongoing problem > with them. > > From previous messages, it seems a trip to gecko for repairs fixes it, but > a random direction fixed at machine boot? Thats weird, and I've no clue. > > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS > > > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
