text: <s>[INST] Leave VFDs unpowered or powered during curtailment? Occasionally we curtail parts of the plant or pieces of equipment. I personally think we should leave them running but stopped. Other people think we should shut everything down to save energy and potentially machine wear. We use 520 series and 720 series drives. Is there an official advice from Rockwell on this? I'm looking at periods from 1-6 months. Thanks [/INST] nan \\n </s>