Problem solved.
Well I hope it is solved and I don't even know how I did it. Here is what I did today, Jon said "You may be able to use the AC range on a DVM, and check while the machine is moving, that might have an effect. The AC range of the meter should show just about zero, anything over 0.1 V AC is highly suspicious that there is ripple on the supply due to failed capacitors." I did this while the X axis was moving and all the axes were twitching, I got a steady reading on the meter. These are the readings DC volts -15.02 on AC range .101, DC volts 15.19 on AC range .001 I think I remember Jon saying the PPMC motherboard is not grounded but could be, by grounding the D-sub body, I checked and it was grounded to the chassis so I thought I would find out how. I unplugged everything from the PPMC boards and found if the amps where plugged into the DAC or the parallel cable was plugged in, the D-sub connector was a dead short to the chassis. Don't know what that means but I made a not of it and put everything back together. With all this talk of grounding I thought I would unscrew the the PPMC motherboard from the chassis and just let it float in mid air. I did this and ran the mill again and the twitching went away, I thought cool I found it, but to make sure I knew I had pinpointed the problem, I remounted the PPMC motherboard back were it was and the twitching has not returned so I don't know what I did. You can see the PPMC boards mounted here:https://sites.google.com/site/bmklawt/home/pictures Any idea what I did that corrected the twitching. Bruce ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
