OK will do. If all else fails I can just do what I did on the last one with Chinese servos.
Regards Andrew On Tue, Jun 23, 2020, 6:15 AM Todd Zuercher <to...@pgrahamdunn.com> wrote: > Let us know how it goes. We passed on a nearly identical machine here > locally who's control wouldn't power up. If the servos had not been so > tightly integrated into the control we probably would have bought it. > > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: andrew beck <andrewbeck0...@gmail.com> > Sent: Monday, June 22, 2020 12:22 PM > To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] max motor size that a 8i20 can control > > [EXTERNAL EMAIL] Be sure links are safe. > > Yep exactly Todd. > > And now I get to play with it. But everything is basically mechanicallly > new as it is so low hrs. Just hoping I can reuse the heidenhain inverter > drive for spindle and servo motors. I think that is still OK. And it > looks like it can take a pwm signal to control it. > > Might need some heidenhain EXE boxes for the incremental sin cos encoders > also. And hopefully I can power it up. It would be awesome it I don't > have to buy new chinese servo drives and a vfd this time! Anyway I'll have > heaps of aiding you guys. > > Ps Todd. > > I ended up tuning my chinese servo drives using halscope to see the > changes in following error and velocity error using the encoder feedback to > linuxcnc from drives. Only changing PIV values in the actual drive, > > halscope pid was not running only counting pulses for position feedback. > And it worked mint. Thanks for all the help. It Cuts a 110mm circle > 0.005mm. out of round now at a decent speed. I'm happy as. > > On Tue, Jun 23, 2020, 4:11 AM Todd Zuercher <to...@pgrahamdunn.com> wrote: > > > More likely, they hired some tech to work on it at $300/hr, he worked > > on it for a week +parts and he couldn't figure it out, then they got > > fed up hired another guy, same story and then wrote the machine off. > > > > Todd Zuercher > > P. Graham Dunn Inc. > > 630 Henry Street > > Dalton, Ohio 44618 > > Phone: (330)828-2105ext. 2031 > > > > -----Original Message----- > > From: andy pugh <bodge...@gmail.com> > > Sent: Monday, June 22, 2020 11:57 AM > > To: Enhanced Machine Controller (EMC) > > <emc-users@lists.sourceforge.net> > > Subject: Re: [Emc-users] max motor size that a 8i20 can control > > > > [EXTERNAL EMAIL] Be sure links are safe. > > > > On Mon, 22 Jun 2020 at 16:52, andrew beck <andrewbeck0...@gmail.com> > > wrote: > > > > > Marcus. Nah that s just how it was. It is a very low hr machine. > > > With a heidenhain control. They spent 25k trying to fix the control > > > and then asked me if I wanted to buy it > > > > > > > Did you offer to take 25k off them to retrofit it? > > > > (Though if Heidenhain couldn't fix it, I would be wondering what might > > be wrong. 25k would be a whole new controller, wouldn't it? ) > > > > -- > > 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://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > 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 > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > 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
