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Fail‑Safe Motor Circuits: When Loss of Power Moves You Toward Safety

Fail‑Safe Motor Circuits: When Loss of Power Moves You Toward Safety

Part 1 of a 2-part series. A practical look at the failures that plague motor drive systems, even those that are rated to be fail-safe.


The Spectrum Between Human and Machine: The Industrial HMI

The Spectrum Between Human and Machine: The Industrial HMI

Although ‘HMI’ has become synonymous with a durable, rugged touchscreen measuring 7 to 21 inches and mounted in a control cabinet door, the reality of the interface extends far beyond this device.


Mitsubishi PLC to VFD Control: RS-485 Communication

Mitsubishi PLC to VFD Control: RS-485 Communication

This guide shows you how to set up RS-485 communication between the FX3U PLC and the FR-D700 inverter with the FX3U-485-BD. You can control speed and monitor the system using ladder logic.


Methods of Controlling Motor Speed With a VFD

Methods of Controlling Motor Speed With a VFD

Motor speed control can be a tricky process, due to the variety of options. In a VFD, speed can be controlled using fixed values, digital or analog signals, or communication networks.


Industry Insights: Understanding Hybrid Linear Motion

Industry Insights: Understanding Hybrid Linear Motion

Kyntronics’ mission is to combine servo control with hydraulic actuators to form hybrid motion control. Our engineering team posed a few questions in hopes of learning more about this technology.


DC Bus Fundamentals in Industrial Motor Drives

DC Bus Fundamentals in Industrial Motor Drives

Learn about precharge circuits, inrush current, and understand why VFD and servo drives may trip during power-up.


How Combustible Dust Hazards Affect Automated Process Control

How Combustible Dust Hazards Affect Automated Process Control

Learn how to integrate fail-safe logic and explosion-proof design to keep your processes running safely and smoothly.


Analog vs. Fieldbus Systems | Comparisons and Advantages

Analog vs. Fieldbus Systems | Comparisons and Advantages

Learn about electrical signalling systems for process control. What advantages may be provided by choosing analog systems vs. advanced modern fieldbus protocols?


MQTT vs. OPC UA: Protocols From an OEM Perspective

MQTT vs. OPC UA: Protocols From an OEM Perspective

MQTT and OPC UA are very different, but they accomplish essentially the same thing: push data from one device to another. Which method to use relies on understanding how each process is accomplished.


First Test Run: Getting to Know the Bosch Rexroth ctrlX CORE

First Test Run: Getting to Know the Bosch Rexroth ctrlX CORE

Get a first look at Bosch Rexroth’s ctrlX CORE, an industrial PC that unifies PLC, motion, and HMI through an app-based automation platform.


Tutorial: Setting up an Inovance HMI With A Mitsubishi PLC

Tutorial: Setting up an Inovance HMI With A Mitsubishi PLC

This guide shows you how to create a simple Inovance HMI project and connect it to a Mitsubishi PLC using serial and Ethernet methods, including practical setup steps and common mistakes to avoid.


Set Up For Success | Scheduling Tasks in PLC Programs

Set Up For Success | Scheduling Tasks in PLC Programs

When setting up a new program in a Rockwell PLC, task scheduling is an important and often overlooked issue where errors appear as inconsistencies, often incorrectly attributed to random faults.


Control.com Readers’ Choice Awards 2025

Control.com Readers’ Choice Awards 2025

Welcome to the end of 2025 and the beginning of 2026! We’re excited to see where the industrial automation world takes us in this new year.


Synchronized Motion for Servos | Gearing Profile

Synchronized Motion for Servos | Gearing Profile

Synchronized motion has become an industry standard with robots, gantries, and pick and place automation. Follow along this three-part series as we discuss methods of synchronizing servo motors.


Understanding PLC Tags: Controller Scope vs. Program Scope

Understanding PLC Tags: Controller Scope vs. Program Scope

Is it best to ‘controller scope’ or ‘program scope’ your tags? This is the question asked by many new PLC programmers, and it often comes down to personal preference.


Methods of Precision Alignment: Mechanical, Laser, and Vibration Analysis

Methods of Precision Alignment: Mechanical, Laser, and Vibration Analysis

Alignment procedures for pulleys and shafts are a key to preventing costly breakdowns. An effective strategy pairs alignment with vibration analysis to both prevent and predict these downtime events.


Control.com Asks the Experts: Serious Questions About Fluid Valves

Control.com Asks the Experts: Serious Questions About Fluid Valves

After working with solenoid valves for many years, there are still a few questions: is AD or DC voltage better? Do we really need lubrication? I turned to an expert for some answers.


Understanding Inputs and Outputs for Servo Drives

Understanding Inputs and Outputs for Servo Drives

Servo drives interact with hardware axes, but there are many ways to configure the motion. I/O signals allow connections of sensors and switches for functions like homing and setting travel limits.


Advantages of Remote I/O Devices With Networking Technologies

Advantages of Remote I/O Devices With Networking Technologies

Networked remote I/O allows machine centers to operate while physically separated from the rest of the system, and often, the solution can drop right into place.


Should I Connect the Commons or Not? Power Supplies Across Systems

Should I Connect the Commons or Not? Power Supplies Across Systems

When dealing with two or more I/O systems, the subject of power supply commons will arise. Sometimes the solution is simple, but it can require creativity to find the best (and safest) solution.