Unless I add stuff to the HAL file apparently there is no accel/deccel values that are applied to the PWM output to the spindle. My scope tells me it goes from 10V to 0V in about 50mS. There is stuff I can add to the HAL:
# load real time a limit2 and a near with names so it is easier to follow loadrt limit2 names=spindle-ramp loadrt near names=spindle-at-speed # add the functions to a thread addf spindle-ramp servo-thread addf spindle-at-speed servo-thread # set the parameter for max rate-of-change # (max spindle accel/decel in units per second) setp spindle-ramp.maxv 60 and some other stuff to hijack the values but so far that hasn't worked and LinuxCNC won't start. I'm probably better off spending my time on the second BoB and wiring things neatly. Still need to put covers and fan on cabinet. Clean up wires with some more harness stuff. And add the relay module and wiring to enable the coolant and mist pumps. So much to do. Or maybe just put a big honking cap across the 0V-10V output. John > -----Original Message----- > From: Groups [mailto:[email protected]] > Sent: July-15-20 2:58 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] New Spindle working. > > It might be worth adding a slower de-acceleration value for the spindle as a > heavier tool may trip the servo. > Cheers > Peter > > Peter Homann - (from my mobile) > http://www.homanndesigns.com > > > On 16 Jul 2020, at 7:48 am, John Dammeyer <[email protected]> wrote: > > > > ?Progress. Bergerda AC Servo driving the Spindle with a V belt still but > > at least driving it. MESA 7i92H PWM, small module from > China for 0V-10V. S1000, F5 and M3 and M5 commands to start and stop. > > > > https://youtu.be/VvXMoC917O0 > > > > Next step somehow incorporate an encoder onto the spindle to close the loop > > and the secondary break out board so I can use > step/dir instead. > > > > Then cast some new pulley blanks and change to toothed belt. But for now > > it's so much quieter than the 2HP single phase > motor. > > > > John Dammeyer > > > > > > > > _______________________________________________ > > 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 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
