Credited with coining the name ‘PLC’, Allen-Bradley and parent company Rockwell Automation are major players in the world of control systems. Learn how the…
Credited with coining the name ‘PLC’, Allen-Bradley and parent company Rockwell Automation are major players in the world of control systems. Learn how the hardware platforms have evolved into the familiar modern configurations.
The timer is a fundamental function of ladder logic programming. In this article, we discuss on- and off-delay as well as…
The timer is a fundamental function of ladder logic programming. In this article, we discuss on- and off-delay as well as retentive timers and define the inputs and outputs required to properly use them.
Power supplies tend to get a reputation as one of the most important power considerations of a DC control circuit - but…
Power supplies tend to get a reputation as one of the most important power considerations of a DC control circuit - but we can’t ignore other key players: power filters, converters, and backup power modules.
Allen Bradley’s Data Highway Plus (DH+) networking ability is still found commonly in interfaces with legacy equipment.…
Allen Bradley’s Data Highway Plus (DH+) networking ability is still found commonly in interfaces with legacy equipment. Understanding this network structure can bridge the gap between old and new systems.
Although the are similarities in operating theory, relays and contactors are used in industrial circuits for different…
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.
Two common methods exist for driving induction motors with VFDs - linear scalar control, which is often labeled as V/f,…
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.
Linear position sensors are used in electrical and fluid-actuated motion devices. They allow extremely precise position,…
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.
With the increasing appearance of “web-based” HMIs, we investigate these devices, learn how they differ from the…
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.
Before digital control systems, responses were fairly slow. Push a button, and a motor contactor engaged. These days, the…
Before digital control systems, responses were fairly slow. Push a button, and a motor contactor engaged. These days, the speed of computers introduces some new challenges but brings solutions as well.
Inductive loads, such as solenoids and contactors, can cause arcs and failures back into electromechanical switching…
Inductive loads, such as solenoids and contactors, can cause arcs and failures back into electromechanical switching devices, causing costly downtime. The solution is cheaper than you think.
Moisture inside industrial pneumatic systems is a major cause for concern, and if the air is not filtered or dried…
Moisture inside industrial pneumatic systems is a major cause for concern, and if the air is not filtered or dried properly, it can lead to serious failures.
The fourth pillar of effective statistical process control (SPC) is the use of designed experiments used to learn as much…
The fourth pillar of effective statistical process control (SPC) is the use of designed experiments used to learn as much as possible from a limited number of experiments, yet remain statistically relevant enough to be useful.
Analog and digital multimeters have both enjoyed popularity in different generations of electrical systems. What is…
Analog and digital multimeters have both enjoyed popularity in different generations of electrical systems. What is unique about the analog meters, and in what situations might they be preferred over their digital counterparts?
This article teaches the basics of gateways in industrial networks and PLC-to-PLC communication.
This article teaches the basics of gateways in industrial networks and PLC-to-PLC communication.
Ladder diagrams, or ladder logic, is a popular programming language used for PLCs. Programmers can utilize boolean logic…
Ladder diagrams, or ladder logic, is a popular programming language used for PLCs. Programmers can utilize boolean logic as a base for their ladder diagrams. Learn the basics and structures for boolean logic.
Servo motors are widely utilized in industry for numerous applications. How do you use fuzzy logic to control a servo motor?
Servo motors are widely utilized in industry for numerous applications. How do you use fuzzy logic to control a servo motor?
How are robots used in discrete versus process automation? Can the process industries utilize more robotic automation?
How are robots used in discrete versus process automation? Can the process industries utilize more robotic automation?
Smart sensors differ from traditional sensors in that they offer benefits such as self-diagnostics, simplified wiring and…
Smart sensors differ from traditional sensors in that they offer benefits such as self-diagnostics, simplified wiring and communication, and more efficient remote monitoring.
Learn the similarities and differences between GUIs and HMIs in the industrial sector. Can they be used together?
Learn the similarities and differences between GUIs and HMIs in the industrial sector. Can they be used together?
Struggling to find the best ways to utilize real-time production data? This article reviews six steps to achieve better…
Struggling to find the best ways to utilize real-time production data? This article reviews six steps to achieve better manufacturing results.
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