Best practices for trouble-free VFD operation Aug 14, 2017This article details best practices for trouble-free operation of the drive and application in the location in which it is installed. Consider the following: Mechanical — Is an enclosure needed for the environment in which the drive is installed? Input power — What is the power source and how stable is the source? Motor wiring that powers How to wire a VFD - vfds Learn the basic wiring of variable frequency drives / VFD with our electrician Steve Quist. In this video, we used the very popular Mitsubishi D700 series VFD, showing single phase and three phase wiring instructions. The VFDs showed in the video are the D720S (230V single phase) and the D720 (230V three phase). We strongly recommend using a certified electrician to set up your VFDs.