text: <s>[INST] Vector Control for Powerflex 70EC Summary: What is FVC Vector mode?Can I run a powerflex 70 EC in FVC vector mode without an encoder? [/INST] No you can not. The Flux Vector Control algorithm uses the encoder speed feedback and compares it to the speed reference. Visit http://literature.rockwellautomation.com/idc/groups/literature/documents/rm/pflex-rm001_-en-e.pdf Pg. 2-208 for a detailed explanation of FVC Motor Control mode. \\n </s>