On Thu, 2007-10-18 at 09:38 -0400, John Kasunich wrote: > Gene Heskett wrote: > > > A possible test to see if its VFD generated noise would be to see if it > > largely goes away when the motor is at full speed, and gets progressively > > worse as the speed is lowered. > > > > Basically, look for a correlation between spindle speed and the extra noise > > pulses. > > A very easy way to see if the spindle drive is generating the noise is > to run the spindle up to top speed and then cut the drive completely and > let the spindle coast to a stop. If the signals get beautiful as soon > as you turn off the VFD, you know where the noise is coming from. And > if they don't, you know it's something other than the drive. > > Regards, > > John Kasunich
Thanks for the tips. Here is another interesting link: http://www.eng-tips.com/viewthread.cfm?qid=196269&page=5 I totally underestimated and overlooked the issues involved with VFD's. I guess they aren't a simple plug and play kind of thing. I plan on using allot more VFD's in the future and developing experience will not only help now but in the future. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe Bridgeport mill conversion pending Zubal lathe conversion pending) ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
