On Sun, 10 Aug 2014, John Alexander Stewart wrote: > Date: Sun, 10 Aug 2014 12:52:19 -0400 > From: John Alexander Stewart <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: [Emc-users] G540, 5i25, missing steps, once again. > > 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)
You might try setting the steptime a little longer, I have seen other cases where more margin is needed, unless your maximum steprate is getting close to 1/(steplength+stepspace), there is no disadvantage to using longer times and they improve your overall margins > > - 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 > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
