text: <s>[INST] Powerflex 700 Error 75 I have a control panel that contains 2 Powerflex 700 Drives. Drive 1 we will call Rotation Drive, Drive 2 we will call Lifter Drive. The drives are communicating through a 20-COMM-D Adapter Card on devicenet of 14 nodes. Occasionally, say once every 8 hours, the Lifter Drive would freeze up with a fault [/INST] Inside the Forum there are many topics about this error... try first to search the drives Board using 75 as keyword... it could be related to noise problem...try to take a look to the following topic and indicated suggestions: http://forums.rockwellautomation.com/t5/forums/forumtopicpage/board-id/Drives/message-id/921#M921 About ferrite cores, see the Installation Instructions ... this document is for PF700s, but is similar for PF700 VC. Hope this helps… - fuzzy logic \\n </s>