Just be sure your field can't drop out without the armature shutting off. You don't want a runaway dc motor.
-- Ralph On Sep 15, 2024 10:27 AM, Sam Sokolik <samco...@gmail.com> wrote: CAUTION: This email originated from outside the Walla Walla University email system. So... Without ripping out the current spindle motor and starting over.. It works surprisingly well - the 0-950 acts like a normal dc motor (field voltage stays constant) The field weakening is a bit more mushy. Dropping the field voltage from 115v to 28V runs the rpm up from 950 to 2500 a bit slower.. Currently I have a 2 lincurv components that take RPM and spit out a voltage to each drive (field and armature) In front of that is a limit2 which limits the slew to 400rpm/sec. If I put a pid loop around that - it works ok - and maybe that is as good as it gets. Thoughts? On Fri, Sep 13, 2024 at 6:35 PM Sam Sokolik <samco...@gmail.com> wrote: > You are right - for just spindle control.. But the 5 year plan is to also > cnc the monarch. (and linuxcnc has all the stuff working and known - > encoder, limit2, pid, lincurve, pwmgen and so on..) I would rather not > re-invent the wheel. (and I am far from comfortable coding on the arduino) > > sam > > On Fri, Sep 13, 2024 at 6:11 PM andy pugh <bodge...@gmail.com> wrote: > >> On Fri, 13 Sept 2024 at 23:25, Sam Sokolik <samco...@gmail.com> wrote: >> >> > Enter Hal, 2 amc drives and a rpi5... (and a few other things) >> >> Much as I am a fan of LinuxCNC, that's probably a job for an Arduino, >> really :-) >> >> -- >> atp >> "A motorcycle is a bicycle with a pandemonium attachment and is >> designed for the especial use of mechanical geniuses, daredevils and >> lunatics." >> — George Fitch, Atlanta Constitution Newspaper, 1912 >> >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C02%7Cralph.stirling%40wallawalla.edu%7Cd94d5d750820460ea30f08dcd592855c%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C638620072515305301%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=f6i9YM3YoEY9mwcBUFTO7cFNevnbUHxRdICjVLbVDj0%3D&reserved=0<https://lists.sourceforge.net/lists/listinfo/emc-users> >> > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
