Marius, Along with the mechanical measurement you described earlier (dial indicator at home) this should provide valuable information.
On Sun, May 5, 2013 at 2:40 AM, Marius Liebenberg <[email protected]>wrote: > Glenn > I have a second encoder mounted to the x axis. I am going to write a > component that will zero the two encoders once it is homed and then I > will compare the two to see what is happening. > > On 2013/05/05 04:19 AM, Glenn Edwards wrote: > > I had somewhat the same problem with a closed-loop stepper motor system, > > but it was not LCNC. I used a programmable digital counter to count > > up-and-down pulses coming from the controller and from the encoders. > Turns > > out the controller was issuing extra pulses, but again the controller was > > not LCNC (they will remain unnamed). Before the counter, I had arguments > > with the controller engineers who kept pointing at 'lost' steps as the > > problem, i.e. accusing the motor as not up to the task. The counter > > was irrefutable and the controller engineers solved the problem within > > day. A programmable counter is not expensive and easy to use and might > > see things Halscope cannot. FYI. > > > > > > On Sat, May 4, 2013 at 4:18 PM, Gregg Eshelman <[email protected]> > wrote: > > > >> --- On Sat, 5/4/13, Marius Liebenberg <[email protected]> wrote: > >> > >>> From: Marius Liebenberg <[email protected]> > >>> I run 2.5.2 on that machine. As I mentioned before, I did > >>> change the > >>> motor/encoder but the problem stays. I thought it might be a > >>> damaged > >>> encode because it only effects the feedback in one > >>> direction. > >>> Is halscope the only way to see what the cause could be? It > >>> might be > >>> difficult to see because the error is +/- 1% of the total > >>> travel and in one direction only. > >> What about the wire connection at the controller? Could even be > something > >> as mundane as a bad solder joint on the connector or terminal block. > >> > >> > >> > ------------------------------------------------------------------------------ > >> Get 100% visibility into Java/.NET code with AppDynamics Lite > >> It's a free troubleshooting tool designed for production > >> Get down to code-level detail for bottlenecks, with <2% overhead. > >> Download for free and get started troubleshooting in minutes. > >> http://p.sf.net/sfu/appdyn_d2d_ap2 > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> > > > > -- > Regards / Groete > > Marius D. Liebenberg > MasterCut cc > Cel: +27 82 698 3251 > Tel: +27 12 743 6064 > Fax: +27 86 551 8029 > Skype: marius_d.liebenberg > Skype Me^(TM)! <skype:marius_d.liebenberg?call> > Get Skype <http://www.skype.com/go/download> and call me for free. > > > > > --- > avast! Antivirus: Outbound message clean. > Virus Database (VPS): 130505-0, 2013/05/05 > Tested on: 2013/05/05 11:40:17 AM > avast! - copyright (c) 1988-2013 AVAST Software. > http://www.avast.com > > > > ------------------------------------------------------------------------------ > Get 100% visibility into Java/.NET code with AppDynamics Lite > It's a free troubleshooting tool designed for production > Get down to code-level detail for bottlenecks, with <2% overhead. > Download for free and get started troubleshooting in minutes. > http://p.sf.net/sfu/appdyn_d2d_ap2 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > -- Best regards, -- -- Glenn Rapid Converting LLC [email protected] www.rapidgasket.com ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
