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Power Supplies: Understanding the Differences Between Linear and Switching

Power Supplies: Understanding the Differences Between Linear and Switching

Linear and switch-mode power supplies provide direct current to power control components and electrical devices. Learn about the differences between the two power supplies and which one is best for your control system.


Electronic Datasheet (EDS) Files: Why do We Use Them?

Electronic Datasheet (EDS) Files: Why do We Use Them?

Many control product manufacturers offer these downloadable ‘EDS files’ for peripheral equipment, but what exactly is an EDS, and how can they aid in the development of a project?


Teardown: What’s Inside a Timer Relay?

Teardown: What’s Inside a Timer Relay?

PLCs and microprocessors have largely replaced timing functions in control circuits. But these timer relays still hold many necessary tasks. What’s inside these devices might be more complex than you imagined!


How To: Use the Arduino PLC IDE to Build Basic Ladder Diagrams

How To: Use the Arduino PLC IDE to Build Basic Ladder Diagrams

Following the release of the official Arduino PLC IDE, this tutorial will introduce programming and understanding of the function blocks common to all IEC 61131 languages, starting with bit commands, timers, and counters.


Teardown: What’s Inside a 3-Phase Induction Motor?

Teardown: What’s Inside a 3-Phase Induction Motor?

Coil, field winding, rotor, stator, eddy current… When it comes to motors, there are numerous terms that describe the theory of operation, but what is inside a 3-phase motor? Take a look, and learn how they work.


Teardown: What’s Inside a Human-machine Interface (HMI)?

Teardown: What’s Inside a Human-machine Interface (HMI)?

Human-machine interfaces, or HMIs, provide visual process data and allow access to process parameters and diagnostics information. What’s inside these touchscreen displays, and how do they actually work?


PLC Program Commands: Arrays Part 4, Statistics and Sizing

PLC Program Commands: Arrays Part 4, Statistics and Sizing

Learn how to make complex calculations for validating data easily with the STD instruction, and learn how to display array sizes programmatically with the SIZE instruction.


Teardown: What’s Inside a Pneumatic Solenoid Valve Bank?

Teardown: What’s Inside a Pneumatic Solenoid Valve Bank?

Air power drives a lot of modern equipment. Robot grippers, ejectors, actuators, and rotary tables are just a few of the devices controlled by air. What’s inside those banks of solenoid valves, and how do they work?


PLC Program Commands: Arrays Part 3, Searching and Sorting

PLC Program Commands: Arrays Part 3, Searching and Sorting

Learn how to streamline your ladder logic by searching and sorting arrays with the FSC and SRT instructions in the Rockwell (Allen-Bradley) Studio 5000 programming software.


What You Need to Know: Variable Frequency Drives (VFDs)

What You Need to Know: Variable Frequency Drives (VFDs)

With precise control abilities to manage speed, torque, and direction, variable frequency drives remain one of the most common methods of driving 3-phase industrial motors. Below, we introduce a few leading VFD manufacturers.


PLC Program Commands: Performing Array Functions Part 1

PLC Program Commands: Performing Array Functions Part 1

Arrays can streamline data storage and math operations, but they can be difficult to understand for a beginning programmer. Learn the background of array instructions in the Rockwell Studio 5000 software.


Modern Distributed Control System (DCS) Using the ABB Advant Controller

Modern Distributed Control System (DCS) Using the ABB Advant Controller

Many worldwide plants are still running the old Advant Controller 450 from ABB in their facility, with many plants using the latest System 800xA DCS interfaced with the existing AC450 controller.


Introduction to Servers for Industrial Applications

Introduction to Servers for Industrial Applications

Servers are vital to the flow of information in and around organizations, acting as a hub for information transfer and storage. Learn about the role of servers in industry and the potential challenges that come with maintaining them.


 Omron PLCs - A Hardware History

Omron PLCs - A Hardware History

With the first fuzzy logic-based controllers on the market in 1983, learn how the Japanese-born automation company, Omron, adopted fuzzy logic as a basis for the design of its current PLCs.


Differences Between a Programmable Logic Controller (PLC) and a Remote Terminal Unit (RTU)

Differences Between a Programmable Logic Controller (PLC) and a Remote Terminal Unit (RTU)

Despite the many overlaps, PLCs and RTUs are two different devices, each with specific suitable applications.


Feedback for Fluid Cylinders: Bang Bang Control

Feedback for Fluid Cylinders: Bang Bang Control

Tracking the position of a hydraulic or pneumatic cylinder is often accomplished at a basic precision level, detecting only end stop limits with discrete digital values… But what methods accomplish this?


Understanding NPN vs. PNP for 3-Wire Sensors

Understanding NPN vs. PNP for 3-Wire Sensors

You are bound to encounter two terms associated with sensors and some loads: ‘NPN’ and ‘PNP’. You must understand the relationship between the field device and the control module in order to choose and install components properly when needed.


8 Steps To Successful Predictive Maintenance Implementation (with examples)

8 Steps To Successful Predictive Maintenance Implementation (with examples)

We'll run through the eight basic steps for implementing a predictive maintenance strategy in your business to improve critical asset availability, reduced maintenance costs, and enhanced revenues over time.


Info Byte: The Mystery of Ice Cube Relays–Coil Polarity

Info Byte: The Mystery of Ice Cube Relays–Coil Polarity

Relay and other coil devices pose a few confusing questions: How can the relay still work if you connect a DC supply in reverse? How can an alternating voltage attract and hold the load consistently?


 Configuration and  Data Logging: Using a PCU to Translate From Process to SCADA

Configuration and Data Logging: Using a PCU to Translate From Process to SCADA

The PCU400 can handle all known industrial protocols and forward them to the master station to get an effective connection between the SCADA system and the data from the manufacturing or system process.