Design and Build of 3 Phase Induction Motor Speed Regulation on Programmable Logic Controller (PLC) Using PID Control Method

The development of industrial automation technology is increasingly sophisticated, directly proportional to the increasing production needs. The use of 3 phase induction motor technology as the main driving component of industrial machines is increasing. High reliability, minimum maintenance, and low price, the 3-phase induction motor is the most appropriate choice for use in industry. The 3-phase induction motor has drawbacks, one of which is not being able to maintain speed when there is a change in load. A closed circuit system using a programmable logic controller (PLC) and Variable speed drive (VSD) is a solution to maintain a stable motor speed. However, it still has the responsibility to reach the reference speed long enough. Some industrial machine productions require a stable 3-phase induction motor rotation speed. In this study, we provide a solution by using PID Autotuning control to accelerate the responsiveness and maintain the motor speed to the reference speed position when there is a change in loading. The test results using the PID Control method, the speed response, when there is a change in loading, is 2 seconds faster than without using PID control. With a speed error of 44.53 rpm or 2.9% of the 1500 rpm reference speed. Smaller than without PID with an error of 118.56 rpm or 7.9% of the 1500 rpm reference speed.