> Chris Radek wrote: > >> Are either of you using FF2? I'm not, but it would be nice if that >> was tested too. >> I did an overall tuning tonight, and glad I did, because I must have done a "save settings" some time ago when I didn't mean to, and the tuning wasn't very good. The FF2 appears to work much like before, and definitely helps. I don't need much at all with my velocity servo amps, as they handle most of the job themselves.
One real oddity I found was that the PID_MAX_VEL parameters were all set for 9.6, which seemed an odd number. MAX_VEL is 1.2 for 72 IPM. So, I would think that PID_MAX_VEL should have been just a little higher. But, I think maybe this is incuding a scale factor for the 10 V output of the DACs. I ran out of headroom on the X axis at the very max speeds of over 70 IPM, so I bumped PID_MAX_VEL ip to 12.0 and everything worked fine. But, I will have to look at the code to see what is going on with that parameter. One other oddity is that PID_MAX_VEL is displayed in the calibration menu for all tabs BUT axis 0! I think that might actually be a bug, if anyone else wants to try it there. I couldn't find any omission of that signal only on axis 0. Jon ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
