While many operations are choosing to update their infrastructure to accommodate more advanced components and processes, some operators choose to keep their legacy systems intact. For decades, manufacturers like Invensys and GE supplied dependable control modules and capacitors that continue to operate in older HVAC units, control panels, and processing equipment today. Despite their reliable nature and longevity, these components are not immune to aging, prompting the need for thoughtful replacements.

In the modern landscape of industrial automation, programmable logic controllers (PLCs) are a commonly used component that any engineer should be familiar with. These specialized devices are the backbone of countless automated systems, facilitating the smooth operation of machinery and processes across various industries. Read on as we explore the basics of programmable logic controllers, their different types, and the wide range of applications they serve.