ACC Automation: PLC & Industrial Control Learning
Practical Tips and Techniques
This EMR Applications article was written by Chris Urban, an automation educator and PLC trainer with over 40 years of hands-on experience. Find Chris on YouTube and LinkedIn. — CU In the complex world of automation, reliability often boils down to a single, fundamental component: the electromechanical relay (EMR) contact. Whether you are troubleshooting a legacy system or … Read more
This article was written by Chris Urban, an automation educator and PLC trainer with over 40 years of hands-on experience. Find Chris on YouTube and LinkedIn. — CU This is the fourth article in the relay series. If you missed the previous one, start here:The Relay Obituary? Not So Fast! Before diving into how relay contacts are used in … Read more
If you’ve ever wanted to practice PLC ladder logic without buying hardware, the ACC PLC Simulator is built for you. It’s free, it runs in your browser, and it uses standard PLC register conventions. No downloads. No license fees. Just open the page and start programming. In this tutorial, I’m going to walk you through … Read more
Here are the top 7 problems and concepts beginners struggle with using ladder logic (Ladder Diagram). Ladder logic is a programming language used in PLCs, and it is based on the graphical representation of electrical relay logic circuits. Many beginners struggle with ladder logic because it requires a different mindset than traditional programming languages like … Read more
Normally open (NO) contacts or inputs in the PLC ladder logic program do not mean the same as a wired normally open switch. NO contacts on the ladder logic provide the logic condition for the rung to turn on the output. We will be looking at three things about the normally open (NO) contact on … Read more