On Wednesday 06 April 2016 04:53:54 Marshland Engineering wrote: Hi Sebastian;
I replied to the below message, suggesting that the linear scales may be too slow, early this morning my time. But its not come back, and its now been over 12 hours since this message was the last one received. Has the mail server gotten another tummy ache? > I finally have my mill table moving under CNC control. > > I'm using a 70 volt supply with DCM D6 drives in Torque mode, Mesa > 7i48 cards, Linear scales for position and 1.2 kw DC brush motors (my > guess on the power as they are 90 volt motors but no current rating) > > The only way I can get any control over the travel is setting P = 0.5 > which of course makes the position accuracy poor. Any more P and I get > sever oscillation. With the size of motor and the 1m table, there is > quite a lot of inertia in the system. > > Anyone suggest starting values or any other suggestions to get this > under control. > > Thanks Wallace. > > > ---------------------------------------------------------------------- >-------- _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
