divide and conquer eg swap driver to another axis, that eliminates the driver leaving mechanics or the interface to the driver (timing/levels)
mechanics, I have had couplings slip interfacing, bad timing delay from the reversal to the first step driver not seeing levels correctly (opto not driven hard enough) Dave Caroline On 10/08/2014, John Alexander Stewart <[email protected]> wrote: > Hi all; > > I thought I had this fixed. > > running a 4 hour engraving process, and the X axis slowly moves. At the > end, it is off, maybe, 0.3mm or so. (using centre drill before and after, > you can see different points) > > I thought I had this fixed, because I've had this problem for a long time, > now I find that the error is small, but still exists. > > - 5i25 has stepdir, etc, parameters set to 2,000 (all 4 of them) > > - The G540 motor is tuned as per directions. (tuned more than once) > > - Only X axis affected, and only in 1 direction. > > - machine slowed down, currently trying one where I increased accel > parameters to slow down any "jerking". > > I'm beginning to think that the G540 is not working quite right, as I've > spent (probably, over the last year) about 1 week on fixing this X axis > slip. > > What would you guys try? > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
