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As we embark on the journey through the Fourth Industrial Revolution, the manufacturing sector continues to witness the seamless integration of PLCs (Programmable Logic Controllers), automation, and robotics, giving rise to the era of smart factories. Despite PLCs being developed almost six decades ago, their adaptability and efficiency persist alongside cutting-edge technologies.

PLCs, or Programmable Logic Controllers, have been in use in one form or another since the proliferation of modern manufacturing. In fact, PLCs have proven so vital that they have ostensibly helped to replace many of the strictly manually executed processes in thousands of plants across the globe.

It’s safe to say that we all benefit from process automation in some shape or form, whether we realize it or not. Many of the products and systems that we rely upon to feed our families, get us to and from work, and allow for a restful Sunday afternoon are made possible by process automation. More often than not, the devices that drive these processes will either be a Programmable Logic Controller (PLC) or a Remote Terminal Unit (RTU).

Electric motors are used in multiple applications of our everyday lives but require the right amount of electrical energy to provide optimal torque and speed. To control these motors, Variable Frequency Devices (VFD), are used to convert AC current into DC current from the power supply. In this article we will look at how these devices work, and how they are important