Optimization of Speed Transition Intervals in Three-Phase Induction Motors for Industrial Efficiency

It is well-known that in industrial processes, the utilization of three-phase motors is fundamental for the correct operation of many control systems. Many times, different intervals of speeds in the clock and/or clockwise direction are needed for processes such as mixing or blending. Usually, motor speed variators are used, but they are expensive, and sometimes they require special training, which represents an inconvenience. This work presents a cheap and versatile option to configure the turning change intervals for the speed of a three-phase motor using a programmable relay. The ladder diagram and the function block diagram programming options are presented.