I can offer something to look for, but no fix. I have 2 G540 drivers, looks identical. One is without problems. The other very distincly stops stepping on the Y channel when the step rate goes below 150 Hz. (So a circle will have two flat spots) This can be seen also when feeding with a lab type pulse generator. I do not know why. The pulse timing I use is very conservative. I have discussed this problem with Gecko, the only solution is to send the drive for repair. (Shipping cost from Sweden easily buys me a new one) I live with this, the faulty drive sits on a machine that only needs three stepper channels.
> 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 > 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
