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Control Wiring for Variable Frequency Drives (VFDs)

Control Wiring for Variable Frequency Drives (VFDs)

Many VFDs use digital inputs to control operation, rather than PLC-driven network communications. Learn about 2-wire and 3-wire digital input control schemes for ABB, Omron, Rockwell, and others.


Fluid or Electric Power? Understanding Hydraulic and Pneumatic Motors

Fluid or Electric Power? Understanding Hydraulic and Pneumatic Motors

There are many different kinds of electric motors used for industrial power transfer, but there are also hydraulic and pneumatic motors that can lend advantages in some situations.


Understanding Temperature Sensors and Their Use in Industrial Automation

Understanding Temperature Sensors and Their Use in Industrial Automation

Converting thermal energy into electrical signals, temperature sensors such as RTDs and thermocouples are fundamental in the maintenance and operation of industrial environments and equipment.


What Is Instrument Calibration and Why Is it Needed?

What Is Instrument Calibration and Why Is it Needed?

Calibration can be a time-consuming process requiring expensive traceable tools, but high-accuracy signals result in higher-quality products, better customer satisfaction, and, ultimately, greater returns.


The Power of Invisibility: Infrared Sensors for Automation

The Power of Invisibility: Infrared Sensors for Automation

Operating just outside the visible light spectrum, infrared energy emits from anything with heat stored in it. Detecting this energy, infrared sensors find use in applications from proximity detection to temperature measurement.


Ladder Logic for the Arduino Opta PLC: Creating Your First Program

Ladder Logic for the Arduino Opta PLC: Creating Your First Program

Arduino’s Opta mini PLC platform is supported by the new PLC IDE. Learn to create and download your first program and take advantage of built-in I/O for an easy introduction to the platform.


A Hands-on Walkthrough of MQTT Protocol Using the paho-mqtt Open Source Library

A Hands-on Walkthrough of MQTT Protocol Using the paho-mqtt Open Source Library

No more IIoT buzzwords! This article aims to walk through an implementation of MQTT using the paho-mqtt library using nothing more than your local machine and some simple Python programming.


Leveraging IIoT and Energy Measurement Tools for Machine Optimization

Leveraging IIoT and Energy Measurement Tools for Machine Optimization

Analytics from data algorithms can predict machine failures and provide diagnostics—but what should we measure? Then, once the information has been collected, what trends might point to problems?


Understanding the OPC Unified Architecture (OPC UA) Protocol

Understanding the OPC Unified Architecture (OPC UA) Protocol

Learn about the history, framework, and current uses of the Open Platform Communications United Architecture (OPC UA) communication protocol in industrial automation.


Lasers and Their Uses in Sensing and Object Detecting

Lasers and Their Uses in Sensing and Object Detecting

A subset of light is the focused cohesive beams that make up lasers, which can be used in optical sensing. These devices provide benefits of greater range, precision, and even mapping for mobile robotics.


What’s This Standardized Code for Information? Funny You Should ASCII

What’s This Standardized Code for Information? Funny You Should ASCII

ASCII is a familiar acronym, found in applications like Modbus communications and string data types—but what is it, and what does ASCII mean for automation engineers?


Cybersecurity for Industrial Control Systems

Cybersecurity for Industrial Control Systems

Cybersecurity is all about processes and people. A lot of threats can be mitigated through technology, but only if people understand how cybersecurity affects control systems and related technology.


A Look at Additive Manufacturing and Its Potential In Production

A Look at Additive Manufacturing and Its Potential In Production

3D printers have come a long way over the years, but can we really expect to see them on the factory floor, taking the place of large machining centers? What benefits and challenges does printing offer to manufacturing?


Fundamentals of Grounding in Industrial Automation and Control Systems

Fundamentals of Grounding in Industrial Automation and Control Systems

The subject of grounding in electronics is broad and complex, spanning across a variety of functions and objectives. In this article, we will investigate the applications and regulation of grounding in control systems on a fundamental level.


The Basics of Optical Sensors and Common Types

The Basics of Optical Sensors and Common Types

Optical sensors are one of the most popular sensor types in industrial automation. This article covers optical sensor basics and commonly used types, including fiber optic, photoelectric, and optical encoders.


5 Best Reliability Techniques For Analyzing Fault Tolerance

5 Best Reliability Techniques For Analyzing Fault Tolerance

Faults and failures are an unavoidable part of any system, but it is important to reduce downtime risks by mitigating failures and designing fault tolerance into critical system elements.


Introduction to Binary Coded Decimal (BCD) Numbers in Instrumentation and Control

Introduction to Binary Coded Decimal (BCD) Numbers in Instrumentation and Control

This article discusses the somewhat outdated yet occasionally encountered binary-coded decimal (BCD) number system and its use in instrumentation and control system displays.


Understanding Thermal and Pressure Safety Valves for Fluid Flow Systems

Understanding Thermal and Pressure Safety Valves for Fluid Flow Systems

Safety is a concern in any system containing potential energy, whether electrical, chemical, or fluid. Each has methods of protection, and for fluid systems, certain shutoff valves are used in situations when excess pressure can be a problem.


Field-oriented Control (Vector Control) for Brushless DC Motors

Field-oriented Control (Vector Control) for Brushless DC Motors

Field-oriented control (FOC), also called vector control, can control 3-phase alternating current motors and brushless DC motors. Read more to learn its advantages, how it works, and its best applications.


Introduction to Industrial Sensors

Introduction to Industrial Sensors

Industrial sensors can be found in nearly every modern industrial process, regardless of complexity. Learn the history, evolution, and variety of sensors that make manufacturing the modern marvel we see today.