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Active Power, Reactive Power, Apparent Power, and the Role of Power Factor

Active Power, Reactive Power, Apparent Power, and the Role of Power Factor

The diverse power terms in electrical generation systems include active, reactive, and apparent power, all of which lead to the introduction of ‘power factor’ effectiveness in an AC circuit.


Cloud Computing and the Industrial Internet of Things

Cloud Computing and the Industrial Internet of Things

Over the last decade, cloud service providers have improved technology, particularly data security and integrity. These remain the top concern of many manufacturing businesses, but as improvements are rolled out, more and more companies are adopting cloud solutions. 


Grounding for Control Transformers

Grounding for Control Transformers

Grounding transformer connections presents its own set of challenges. This article addresses these challenges and several common configurations for control transformer grounding.


Understanding Differences Between Power and Ground Side Switching

Understanding Differences Between Power and Ground Side Switching

Learn about power side and ground side switching and how designing these circuits to have predictable failures from the beginning helps in system maintenance and troubleshooting.


What is Firmware, and Why is PLC Firmware Important?

What is Firmware, and Why is PLC Firmware Important?

Inside a controller, code is interpreted into the binary signals that influence input and output signals, flags and registers, and even the communication of network signals. This is the job of firmware.


Interrupting Dangerous Current Flow: Fuses vs. Circuit Breakers

Interrupting Dangerous Current Flow: Fuses vs. Circuit Breakers

Fuses and breakers are some of the most common safeguards to prevent electrical shock and fires. Learn about these two pieces of industrial equipment and the difference between slow blow and quick blow responses.


How to Program a Robot: Industrial Robotic Arm Coding Basics

How to Program a Robot: Industrial Robotic Arm Coding Basics

The world of manufacturing is filled with robots, but beginners are still always faced with key questions, starting with perhaps the most basic: how do you program industrial robots?


Understanding Centralization vs Decentralization of PLCs

Understanding Centralization vs Decentralization of PLCs

Centralized control systems are often seen as outdated compared to decentralized systems; however, both have their advantages and disadvantages when it comes to choosing which one to use in manufacturing. 


CTRL F3: Factory Explosion Field Study

CTRL F3: Factory Explosion Field Study

The CTRL F3 series reviews field studies and failures in the field focused on control fails, fixes, and facts. This article covers an explosion at an industrial sawmill.


Negative Effects of Grounding (Earthing) a DC Power Supply

Negative Effects of Grounding (Earthing) a DC Power Supply

DC voltage systems exist to provide controllers and field devices with stable power, but it is not always clear when these systems should be bonded with the earth ground of the AC line voltage supply.


Programmable Logic Controller (PLC) Hardware

Programmable Logic Controller (PLC) Hardware

Programmable Logic Control (PLC) systems are the core of most industrial control systems that drive modern manufacturing. In this Control Automation video, we discuss the important hardware elements that define a PLC, regardless of its size or purpose.


Configuring a Network With Pneumatic Valve Manifolds

Configuring a Network With Pneumatic Valve Manifolds

There are many distributed fieldbus capabilities for valve manifolds that can save on network overhead and wiring. In this article, we will look at PLC programming of fieldbus manifolds highlighting Festo's CPX layout.


Understanding PLC Program Commands: Math Instructions

Understanding PLC Program Commands: Math Instructions

We will show you how to use common math functions from two popular PLC programs—Rockwell Automation's Studio 5000 and Automation Direct Productivity Suite. 


Introduction to Programmable Logic Controllers (PLCs)

Introduction to Programmable Logic Controllers (PLCs)

Programmable Logic Control (PLC) systems are the core of most industrial control systems that drive modern manufacturing. In our Control.com video tutorials, we will share information, experience, and tips for working with PLCs—from the hardware, to the wiring, to the programming logic of inputs, outputs, and communication processes.


Understanding PLC Program Commands: Up and Down Counters

Understanding PLC Program Commands: Up and Down Counters

Counting up and down are commonly required functions in PLC lagger logic programs for tracking inventories, placement patterns, and gaining informational insights about machine performance statistics.


Understanding PLC Program Commands: One-Shots

Understanding PLC Program Commands: One-Shots

Many PLC commands are well-known to programmers, including contacts, coils, timers, and counters. But a less-common instruction is the one-shot, capable of harnessing the incredible processing speeds in a CPU.


Obsolescence in Control Systems - Disaster or Opportunity?

Obsolescence in Control Systems - Disaster or Opportunity?

One of the most considerable risks in aging control environments is that eventually, spare parts become obsolete and unavailable, and the lack of an upgrade plan can turn a simple failure into a catastrophe.


Allen-Bradley PLCs - A Hardware History

Allen-Bradley PLCs - A Hardware History

Credited with coining the name ‘PLC’, Allen-Bradley and parent company Rockwell Automation are major players in the world of control systems. Learn how the hardware platforms have evolved into the familiar modern configurations.


Understanding PLC Program Commands: Timers

Understanding PLC Program Commands: Timers

The timer is a fundamental function of ladder logic programming. In this article, we discuss on- and off-delay as well as retentive timers and define the inputs and outputs required to properly use them.


Power for Control Circuits: It’s Not Just Power Supplies

Power for Control Circuits: It’s Not Just Power Supplies

Power supplies tend to get a reputation as one of the most important power considerations of a DC control circuit - but we can’t ignore other key players: power filters, converters, and backup power modules.