While it may seem counterintuitive, a VFD powering another VFD will damage the system.įor loads such as CNC, HVAC, and elevators, a Phase Perfect® Digital Phase Converter is recommended. This type of equipment is not meant to be started and stopped by the source power. However, unlike a VFD, the Phase Perfect® digital phase converter provides the flexibility needed to start, stop and run equipment at different times.Įquipment designed with internal VFDs shouldn’t be controlled by an external VFD. While a single VFD enables multiple loads to run at one time, they must all be started and stopped together, or control issues may result. Only the Phase Perfect® digital phase converter, with its patented solid-state technology, provides a safe, clean, three-phase output which is capable of starting and stopping motors across the line while running electronics such as transformers, contactors, circuit boards, lights, and heaters.
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