Hello Andrew, Is there a baking resistor installed on your drive? I think a proper one should solve your problem and you can keep the good deceleration rates.
Leonardo Marsaglia El dom., 25 abr. 2021 08:30, andrew beck <andrewbeck0...@gmail.com> escribió: > hey guys > > not sure if my emails are coming through to you guys. hope they are. > > i have just successfully set up my encoder for rigid tapping using index > signal from spindle motor encoder > > just got a few questions for the group > > is it possible to set different ramp values depending on spindle speed. > > if I try rigid tap at 1000 rpm at 1mm pitch i get a over travel of about > 5mm. I can reduce the deceleration ramp in the altivar 71 schiender drive > to 0.5 secs and then the over travel is about one revolution of the > spindle. but if i leave the settings in vfd like that and then run spindle > at 9000rpm the spindle goes into overvoltage faults. > > just wondering if I can maybe set use the ramp internally to linuxcnc to > give me more control > > http://linuxcnc.org/docs/html/examples/spindle.html > > if i could specify a max rate of change and also a max ramp setting I think > I could set the values up so that at high speed the max rate of change > slows the spindle slowly enough that it doesn't trip vfd. while at low > speed say under 1000 rpm the spindle can stop faster. or maybe I am just > miss reading this all > > > regards > > Andrew > > _______________________________________________ > 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
