OK, so I've confirmed a few things on this system, X axis only: For these purposes, X+ is moving the table left, X- is moving the table right.
1) positive voltage to the servo amp drives the X axis in the X+ direction, negative voltages drives it in the X- direction. 2) I've verified the encoders reflect the correct direction moved. 3) In the pncconf open loop test, with "Invert motor direction" unchecked, the motors move in X- direction when the "+" button is pushed and X+ direction when the "-" button is pushed. When the "Invert motor direction" box is checked, this is corrected and the motors move in the expected direction. In the case of "invert motor direction" checked,OUTPUT _SCALE is being set to -1.0 in the INI file. 4) After saving that configuration, just putting the machine on results in -9.8 volts read out on the voltmeter. 5) This is confirmed via halmeter, where pid.x.output is -10, but pid.x.feedback is 0 this seems backwards, but I've got some time tonight to play with it to try and figure it out. Again, very strange is if I have the X axis such that it moves X- when the "+" button is pressed in the open loop test, then it is somewhat more stable (takes longer to reach the following error), but voltmeter output shows that (with servos disabled), the further I move X+, the it puts out a positive voltage, which would want to further move the X+ direction. Scott On Thu, Aug 18, 2011 at 10:44 AM, John Thornton <bjt...@gmail.com> wrote: > Scott, > > I found my sketchy notes on tuning the drives... > > Pin 1-2 should be 0.0mV Balance is RV5 > > Signal Gain start at 20.0 then run lag test (Anilam) I assume that to be > a following error test that can be done with Halscope. > > I have the Anilam Installation Guide in pdf that pertains to the > physical installation (comes in handy when fixing something) as well as > a few other things that might be of use to you if you contact me > directly I can e-mail them to you. > > John > > > ------------------------------------------------------------------------------ > 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 > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
