Do PLCs Use AC or DC Power? A Comprehensive Guide

In the world of industrial automation, Programmable Logic Controllers (PLCs) play a crucial role in controlling machinery and processes. One of the fundamental questions that arise when working with PLCs is whether they operate on AC (Alternating Current) or DC (Direct Current) power. This article delves into the intricacies of PLC power supplies, helping you understand the differences between AC and DC, the right power supply for your PLC, and the implications for your automation systems.