The ideal ac motor speed control offers a combination of digital variable frequency drive (VFD) with some programming capabilities. The most common VFDs control functions we’re asked about are speed, torque, acceleration ramp, deceleration ramp, run, stop, direction, over-current protection, and speed read-out capability. Many of our customers want the “all-in-one” solution as well; eliminating components and simplifying set-up is the key of an ideal variable frequency drive.