Why can’t I hear the radio? VFDs and Interference Issues

When properly installed, variable frequency drives (VFDs) offer many advantages over conventional systems, including constant pressure, soft starting, and the option of a small, space-saving tank. While these advantages far outweigh the chance of ever experience a problem, in certain circumstances, all VFDs have the potential to create electromagnetic interference (EMI). Observing proper installation and grounding procedures greatly reduces the chances of EMI, and this issue of Franklin AID discusses a few simple steps to do just that. Continue reading