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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.


The 100,000-Hour Myth: Decoding Industrial LED Life Cycles

The 100,000-Hour Myth: Decoding Industrial LED Life Cycles

Why do "forever" LEDs fail? A technical guide on L70 standards, multi-voltage IC drivers, and a comparison of industry-leading LED manufacturers.


Data Centers, AI, and the New Control Playbook: Weidmüller’s Perspective

Data Centers, AI, and the New Control Playbook: Weidmüller’s Perspective

Control.com chats with Weidmüller to get some insights about data center automation, learning about security, environmental impacts, regulations, and more.


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.


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.


Introduction to Common Network Protocols in Industrial Automation

Introduction to Common Network Protocols in Industrial Automation

This article provides an overview of the OSI models, IT/OT industrial protocols, and key applications behind the networking capabilities that drive modern industrial and process automation systems.


Managing and Configuring Switches for Secure SCADA Networks | Part 2

Managing and Configuring Switches for Secure SCADA Networks | Part 2

Learn about OT resilience strategies, including SSH, authentication, port blocking, and MAC address binding, methods that can be employed to protect network switches.


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.


Using FANUC’s EGD Protocol for Robot-to-Robot Communication

Using FANUC’s EGD Protocol for Robot-to-Robot Communication

Handshaking between robots can be handled in many ways, one of them being GE-FANUC’s protocol called “Ethernet Global Data,” or EGD. Learn how to set up EGD on a pair of FANUC robots.


A New Way to Pneumatic: Industrial Piezo Electric Valves

A New Way to Pneumatic: Industrial Piezo Electric Valves

The term "piezo" refers to a relationship between mechanical deformation and voltage–useful for some sensor processes. Recently, the concept has been employed to upgrade pneumatic valves.


Remote Industry and the Growing Popularity of Cellular Systems

Remote Industry and the Growing Popularity of Cellular Systems

Previously reserved for personal and commercial deployments, learn how cellular IoT connectivity technologies are influencing industrial trends, organizations, and integrators.


What are Interposing Relays in Control Circuits?

What are Interposing Relays in Control Circuits?

An interposing relay is an interface between a control system and a higher power circuit to provide isolation or amplification of mismatched voltage and current from a control to a load circuit.


Add a Dynamic Braking Resistor to a PowerFlex VFD

Add a Dynamic Braking Resistor to a PowerFlex VFD

Dynamic braking resistors stop motors more quickly by converting the rotational energy, but how do we select the correct one and configure a PowerFlex drive to utilize the resistor effectively?


Tricks of the Trade: Troubleshooting Industrial Control Cabinets

Tricks of the Trade: Troubleshooting Industrial Control Cabinets

When the blinking lights on automation devices stop blinking, the control cabinet is often the go-to troubleshooting culprit, but how do you make the best judgments for quickly locating the problem?


Remote Networking: Explaining VPNs for Control Engineers

Remote Networking: Explaining VPNs for Control Engineers

It can be risky to adopt unknown technology; it poses serious security concerns if misused. The Control.com engineering team contacted our friends at OnLogic to gain some insight into VPN technology.


The Dirty Details of Electrical Power: Line/Load Reactors and Filters

The Dirty Details of Electrical Power: Line/Load Reactors and Filters

Filters and reactors can protect your electrical devices, but what is the difference between these two kinds of devices, and are they supposed to be installed before or after a VFD?


Shunt Resistors and Applications in the Field of Instrumentation

Shunt Resistors and Applications in the Field of Instrumentation

A shunt resistor connects in series with a load to measure the high current in the DC circuit. Using Ohm's law, the current value can be calculated by measuring the voltage across the shunt.


Basics of Air Motors: Pneumatically Controlled Rotation

Basics of Air Motors: Pneumatically Controlled Rotation

Air motors are common in process industries, mainly used in hazardous areas. This article introduces the features and working principles of air motors and the differences between air and electrical motors.