Dave, Kirk, Jon, thanks! 2011/11/5 Dave <[email protected]>: > > What I did to verify that the VFDs were the problem was to run the > machine without the VFD powered up - pull the fuses or unwire them.. > Then try running parts for an hour or so. Remove the cutters if need > be.. . If the problem vanishes you likely have an VFD related noise problem.
It is easy to switch the VFD off, but I am having difficulties to come up with a plan, how to check, if the tool takes correct path. I will consult with client's specialists - maybe they can suggest something. 2011/11/5 Kirk Wallace <[email protected]>:>> My experience seems to indicate:>> _Always_ have a filter on VFD power inputs. I have a question here: Filters on VFD input lines have been mentioned several time here. Is this something close to what is meant here: http://www.newark.com/tyco-electronics-corcom/10vr6/rfi-power-line-filter-10a-700ua/dp/52K3303 2011/11/5 Jon Elson <[email protected]>: > > You can run memtest86 from the install CD and let it run for at least > several > hours. This program gets the CPU warmed up and exercises memory > heavily. If it finds even a single error, don't bother with anything else > until it can run without error overnight. > > Also, you can run the latency test for a few hours, and exercise web > browsers, USB memory stick inserts/removals, glxgears and other > operations to see if the latency gets bad. I ran latency test with glxgears and tried to open/close firefox last time I was there. But I think that I ran the test for 15-20 minutes. It was pretty fine - max jitter on base-thread was reaching 25000 ns, but base thread is not used and max jitter on servo thread was around 16000 ns, servo period is standard 1 ms. I recall that I ran latency tests, when I initially installed EMC2 on the machine and there were cases, when max jitter reached >800K ns - almost another servo period. Also that time I ran the test for less than 15 minutes. I will try to figure out, how can I these tests for longer time period without sitting next to the machine - it is several hours to drive from my place. And I think that client will not be happy about machine idling for a whole working day, but I will handle that. Viesturs ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
