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Contactors versus Relays - Differences and Applications

Contactors versus Relays - Differences and Applications

Although the are similarities in operating theory, relays and contactors are used in industrial circuits for different specific applications, and should not be used interchangeably.


The Cat’s Out of the Bag - Demystifying Network Cables

The Cat’s Out of the Bag - Demystifying Network Cables

What’s the difference between a Cat 6 and a Cat 6a cable, anyhow? Ethernet cables must meet certain performance standards, and these standards can be quite confusing at first glance.


Hysteresis - Error and Compensation in Control Systems

Hysteresis - Error and Compensation in Control Systems

Hysteresis is a term introduced in basic control system courses and listed on sensor datasheets, but the terms is not often understood, with error deriving from both the system itself as well as the sensor.


Comparing Mechanical vs Hydraulic Forces

Comparing Mechanical vs Hydraulic Forces

In honor of May the 4th, Star Wars Day, we compare the sources and applications of the two most common force-delivery systems - mechanical and hydraulic.


Rockwell’s New Armor Powerflex Variable Frequency Drive

Rockwell’s New Armor Powerflex Variable Frequency Drive

Rockwell recently announced the newest addition to the PowerFlex family of VFD units - the Armor PowerFlex series, designed for on-machine control with heightened IP ratings over previous models.


News May 03, 2022 by Shawn Dietrich
Siemens SIMATIC PLCs - Hardware History

Siemens SIMATIC PLCs - Hardware History

In this first of an upcoming series, we investigate Siemens as a major PLC manufacturer, learning about the hardware, software, and key applications of each product lineup.


Keyence Announces New NQ IO-Link Master Module

Keyence Announces New NQ IO-Link Master Module

The Keyence Corporation recently announced the NQ series network communication module, with the ability to automatically detect any Keyence branded IO-Link devices for rapid installation and monitoring.


News Apr 30, 2022 by David Peterson
Circular Economy - Manufacturing to End User… And Back

Circular Economy - Manufacturing to End User… And Back

‘Reduce-reuse-recycle’ is a common slogan for promoting reduction of waste associated with end use of materials. But a circular economy model includes manufacturing processes and raw materials as well.


Parker Hannifin Announces PAC Motion Controller and Modules

Parker Hannifin Announces PAC Motion Controller and Modules

Hydraulic component leader Parker Hannifin recently announced a new PAC motion controller and module series with web-based visualization for instant remote monitoring of up to 40 motion axes.


News Apr 28, 2022 by David Peterson
US DoC Appoints 27 Board Members to the National AI Committee

US DoC Appoints 27 Board Members to the National AI Committee

The United States Department of Commerce has appointed 27 new members to the National AI Advisory Committee (NAIAC).


News Apr 27, 2022 by Seth Price
Defining Scalar and Vector Control in VFD Outputs

Defining Scalar and Vector Control in VFD Outputs

Two common methods exist for driving induction motors with VFDs - linear scalar control, which is often labeled as V/f, and vector, or field-oriented control, which can be a bit more complex to understand.


Banner Engineering’s Snap Signal System for Easy IIoT Development

Banner Engineering’s Snap Signal System for Easy IIoT Development

The Snap Signal System by Banner Engineering brings industrial IoT to all devices, including sensors and actuators - regardless of age or origin.


News Apr 26, 2022 by Seth Price
How to Use Analog to Digital Converters in a Control System

How to Use Analog to Digital Converters in a Control System

Using an ADC can be very useful when dealing with analog devices in microprocessors, and a necessity when adding analog devices to an industrial controller. But once you connect the hardware - what next?


Dynamic Braking Resistors for Motor Control Applications

Dynamic Braking Resistors for Motor Control Applications

Large DC and AC motor drives often provide terminals for installing a braking resistor. What are these resistors, and how do they slow down a machine? What hazards and cautions must be considered?


Replacing a Control Cabinet with Modules? Beckhoff Says Yes!

Replacing a Control Cabinet with Modules? Beckhoff Says Yes!

Beckhoff Automation is advancing the concept of reducing cabinet space and lowering construction time with their recently announced MX-System.


News Apr 21, 2022 by Shawn Dietrich
Introduction to Safety Relays

Introduction to Safety Relays

Redundancy and safety are often seen together in industrial safety systems. Safety relays monitor emergency devices to switch contacts based on status - but what makes them different from normal relays?


Mechanisms of Linear Sensing and Linear Encoding

Mechanisms of Linear Sensing and Linear Encoding

Linear sensors use electrical means to determine their position. Common linear position sensors are resistive, inductive, capacitive, and many rely on a property called magnetostriction.


How-To: Programming with IO-Link Devices

How-To: Programming with IO-Link Devices

Advanced features such as programmable limits, diagnostics, and remote configuration are available with IO-Link devices. Learn how to connect an example IO-Link block into an actual PLC project.


Linear Position Sensors - Control is Only as Precise as the Feedback

Linear Position Sensors - Control is Only as Precise as the Feedback

Linear position sensors are used in electrical and fluid-actuated motion devices. They allow extremely precise position, velocity, and acceleration control, and provide feedback to ensure product quality and tolerance compliance.


Web-Based Industrial HMIs: What’s The Difference?

Web-Based Industrial HMIs: What’s The Difference?

With the increasing appearance of “web-based” HMIs, we investigate these devices, learn how they differ from the graphical HMIs, and see implications for our modern control system architecture.