EMR Contacts in Applications

electro-mechanical contacts (EMC) in applications

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

Relay Symbols and Abbreviations Glossary

Do you really understand relays?

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

How to Control AC Loads from a PLC

How to Control AC Loads from a PLC

This article was written by Chris Urban, an automation educator and PLC trainer with over 30 years of hands-on teaching experience. Find Chris on YouTube and LinkedIn. — CU A question that comes up constantly from beginners: if PLC control logic runs on safe low-voltage DC, how do you actually switch a 120V, 220V, or 460V AC load like a … Read more

Inside Arduino’s New Opta IoT PLC: Features That Matter

Arduino Opta IoT PLC Hardware

Unlocking the Potential of Industrial Automation with Arduino Opta IoT PLC Hardware: The Ultimate Guide! Arduino, the leading open-source electronics platform, has recently launched a new piece of hardware called the Arduino Opta IoT PLC. The device has been designed to enable the development of advanced industrial automation solutions, making it a game-changer in the … Read more