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When To Calibrate: Making Sense of Calibration Intervals

When To Calibrate: Making Sense of Calibration Intervals

Calibration is performed on a regular basis to ensure proper measurement tool function, but how do we determine the proper interval? Factors include environment, usage, and level of dependence on proper function.


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.


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?


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.


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.


Inrush Current: Why Is Motor Startup Current So High?

Inrush Current: Why Is Motor Startup Current So High?

Motors consume the highest current during startup—this is a well-known fact. But logically, the slowest speed should relate to the lowest power consumption. Why, then, is inrush current so high for motors?


Understanding Controller Memory Types and Conservation

Understanding Controller Memory Types and Conservation

Insufficient controller memory can result in reduced HMI and SCADA response speed and longer scan times. Know the differences between RAM, ROM, and removable memory, and how to keep program sizes in check.


Introduction to Basic Three-Phase Motor Control Circuits

Introduction to Basic Three-Phase Motor Control Circuits

Large motors require a circuit to turn on and off. This may be as simple as a single on/off drum-type switch or as elaborate as a VFD unit. Learn about some common control circuit designs for typical three-phase motor requirements.


Understanding Power Quality, Monitoring, and Correction  

Understanding Power Quality, Monitoring, and Correction  

Power quality is an increasing concern for manufacturers all over the world as electrical equipment becomes more advanced and therefore sensitive to discrepancies in the supplied power.


Safety Devices - The When, How, and Why

Safety Devices - The When, How, and Why

Machine safety design can be a daunting task with all the different safety devices on the market today. Choosing the correct device for your design can be made easier by understanding when to use the proper device.


Comparing Parallel Circuits: Practical vs Theoretical Electrical Systems

Comparing Parallel Circuits: Practical vs Theoretical Electrical Systems

We are taught that parallel circuits maintain equal voltage across all branch resistors, equally sharing the source voltage. But reality is often far from ideal, and individual devices certainly impact the rest of the circuit.


Introduction to Network Switches for Industrial Applications

Introduction to Network Switches for Industrial Applications

Industrial network switches connect automation equipment, controllers, and other such devices. Learn about unmanaged, managed, and PoE enabled switches, as well as the differences between switches, routers, and hubs.


Memory: A Challenge on the Road to Industry 4.0

Memory: A Challenge on the Road to Industry 4.0

Memory for data is among the most pressing challenges to Industry 4.0. Given the evolving nature of Industry 4.0 and associated memory solutions, however, some memory-based trends are becoming apparent.


What’s the Difference Between a Safety Contactor and a General Purpose Contactor?

What’s the Difference Between a Safety Contactor and a General Purpose Contactor?

Designing a system with motor motion always includes a consideration of safety. Incorporating safety contactors might be the correct prevention to protect equipment and users but may add additional challenges.


Types of Actuators: Comparing Pneumatic vs. Electric Actuators

Types of Actuators: Comparing Pneumatic vs. Electric Actuators

Actuators are used to control the motion of manufacturing devices and raw materials. This article will compare electric actuators and several types of fluid-power actuators.