Sorry, I should have stated up front that this machine is not running EMC...yet!
The fix needs to be on the hardware side as it should work as is. I use a programming workaround now to get to 6000 RPM with a slight G4 pause between speed increases. The Z does not have a spline on the spindle it is a VMC so the whole spindle and motor is moved by the Z servo. Thanks for the link I'll save that for when I change my BP Series 1 with Anilam control to EMC2. Thanks for the ideas John On 8/18/2011 1:29 PM, Jon Elson wrote: > John Thornton wrote: >> My symptom is when I try and accellerate the spindle from 0 to>2400 rpm >> in one step the drive faults out with a generic fault. Sometimes when >> running the mill at 6000 RPM for a while (so good and warm) a Rapid Z up >> will give the same fault. I can ramp up to 6000 RPM by starting at 2000 >> RPM using 100 RPM increments with a G4 of 0.1 between. >> > What you need to do is insert a filter between the spindle speed command > and the DAC that sends > the speed command to the drive. I have used the hal lowpass component > for this, but apparently > the limit component can also be used to limit the rate of change of the > output. > > See : > http://pico-systems.com/codes/jebport/ppmc_motion.hal > for how I have spindle speed filtered on my Bridgeport. > > As for the Z movement giving a fault, I can imagine a couple possible > things. One is if all the power > supplies are common, the rapid Z move might cause the DC bus voltage to > dip. Another possible > thing is the spindle spline is binding and causing the bearings to drag. > > Jon ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
