The REOVIB MFS 168 series of variable-frequency regulators are specially designed for controlling vibratory feeders. The units produce a highly stable output frequency that is adjustable in 0.1 Hz increments. Manual "tuning" time of the mechanical feed system is significantly reduced. The sinusoidal output means that the feeder runs quietly and provides gentle product handling characteristics. Settings are adjusted by using a touch-panel and an integrated digital display. The feed rate set-point can be adjusted in several ways, including the use of 0 - 10V or 0(4) - 20 mA signals. User settings can be stored and recalled. Depending on the controller version there are functions available for track-sensor control and constant amplitude control, which maintains a constant feed-rate irrespective load variations on the feeder. All electrical connections are brought out to terminals located in the front panel. The enclosure is designed for panel mounting.