I may not have seen all the posts regarding this, but none that I saw mentions using shielded cable from the VFD to the motor?
If not already done, change to shielded cable for the motor leads too! The braid needs to be grounded at the VFD and the motor. Never ever use a pigtail to extend the braid to ground. This goes for both encoder and power cables. Clamp the braid itself to ground or use a grounding feedthrough! If there is any potential difference between motor and VFD (cabinet), equalise it with a multistrand ground lead with a good cross section. Don't care if this might look like creating a ground loop through the braid. The current will go through the lead with the least resistance (your ground lead). Hence the solid cross section. Einar Sjaavik ------------------------------------------------------------------------- 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
