Hi Sam, Yeap, seems like the servo motor limits its acceleration within itself. The problem is the manual doesn't help and the only thing I could find is a smooth factor so I'll tell him to play with that value and see what happens. It seems the drive has more settings available when you tune it via the PC software. That really sucks.
The people that own the machine purchased the drive without even consulting the manual before. Big mistake I believe. El mar, 24 ene 2023 a las 13:08, Sam Sokolik (<samco...@gmail.com>) escribió: > This is why I don't like smart servo drives.. lol.. You don't know how > well the drive is following the path linuxcnc is commanding.. > > With steppers - at least they stall.. The fact that the servo drive isn't > tripping a following error makes me think they are not setup correctly. > It should notice the difference between the step train and the actual > position of the servo and know that it isn't keeping up. > > On Tue, Jan 24, 2023 at 9:43 AM Leonardo Marsaglia <ldmarsag...@gmail.com> > wrote: > > > Hi guys, hope you are all doing well. > > > > My brother is changing some stepper motors to servos from a machine with > > LCNC 2.4.3 and a mesa 5i20. The servos are D2 model from Hiwin. > > > > The problem he's having is that, in rapid movements, after LCNC completes > > its motion the servo motor keeps running until it reaches the desired > > position. Apparently scale is ok and position is reached ok too, but only > > works well in coordinate motion (G01) between two axes. > > > > Could it be that the stepgen timing is too fast for what the servo is > > waiting for? And because of that it buffers all the pulses and executes > the > > motion anyway? The manual says max frequency in LOW FREQ input is about > 500 > > khz so this shouldn't be a problem but maybe the timing is not quite > right > > for what the servo expects. > > > > By the way, I can't find any info in the manuals about the timing of the > > step signal other than the max frequency and wiring diagrams for the > > different setups. > > > > I don't have direct access to this machine so there's not much that I can > > do right now but it might be a simple problem so I had to ask. > > > > Thanks as always for your help! > > > > Leonardo > > > > _______________________________________________ > > 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
