Reading a motor nameplate can sometimes pose a unique challenge. Most manufacturers display information differently, and nameplates often get dirty, damaged, and occasionally are removed. This can make reading a motor nameplate a difficult or frustrating task.
Phase converters in general typically don't require much maintenance, if at all.
In short, CNC is probably one of the most demanding applications for phase converters, so yes to operating CNC's with a Phoenix Phase Converter. As for VFD's, that's a yes, too!