EDN

Open-Source Robotics and Process Control: Sensor, Actuator and Control Circuit Examples – Part 1

In this chapter, I will present a few useful “cookbook” applications for real-time control circuits designed to perform some specific low-level task and interface with a master controller for ...
EDN

Open-Source Robotics and Process Control Circuit Examples – Part 5: RS-422-Compatible Indicator Panel

This circuit is a bit of a departure from the rest of the content in this chapter, inasmuch as the appliance I describe here is not part of the E-2 project. The reason I have included this section is ...
Electrical Construction & Maintenance

Remote Control and Signaling Circuits, Class 1

Courtesy of www.MikeHolt.com. Based on the 2020 NEC. Article 725 of the National Electrical Code (NEC) covers remote-control, signaling, and power-limited circuits that are not integral to a device or ...
Ohsonline.com

Higher Capabilities for Safety-Rated Control Circuits

Higher Capabilities for Safety-Rated Control Circuits A truly reliable safety control system must work even when some parts fail. Force-guided relays are unseen components that add another level of ...
Electrical Construction & Maintenance

Troubleshooting Motor Control Circuits — Part 2

In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...