AC motors are common throughout industry - easily controlled by VFDs and without the maintenance that comes with DC brushes. So then, why are DC motors still…
AC motors are common throughout industry - easily controlled by VFDs and without the maintenance that comes with DC brushes. So then, why are DC motors still used in certain applications?
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.
Beijer Electronics recently announced the M Series of distributed I/O to provide on-machine control with a variety of…
Beijer Electronics recently announced the M Series of distributed I/O to provide on-machine control with a variety of communication options for system flexibility.
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.
Failures of I/O systems are a common source of headache for control engineers. Troubleshooting those devices that have…
Failures of I/O systems are a common source of headache for control engineers. Troubleshooting those devices that have polarized connections (source vs sink, and NPN vs PNP) is a technique worth refining.
We've read about the capabilities of collaborative robots, but often, one question still remains - how do you program a…
We've read about the capabilities of collaborative robots, but often, one question still remains - how do you program a cobot? Last week, I got a chance to get my hands on a cobot for the first time.
Power delivered to devices can be changed by raising or lowering the voltage and current. But this method does not always…
Power delivered to devices can be changed by raising or lowering the voltage and current. But this method does not always produce intended results. Pulse width modulation (or PWM) can be used to better control variable loads.
Phoenix Contact’s new CAPAROC system of low-voltage circuit breakers provides remote reset functions as well as…
Phoenix Contact’s new CAPAROC system of low-voltage circuit breakers provides remote reset functions as well as discrete and networked access to branch circuit data for rapid troubleshooting.
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?
What is a PLC? This article will lay out a succinct definition of a programmable logic controller and explain its basic…
What is a PLC? This article will lay out a succinct definition of a programmable logic controller and explain its basic components.
In the late 1960s, a revolution in manufacturing became a reality when the first Programmable Logic Controller (PLC) was…
In the late 1960s, a revolution in manufacturing became a reality when the first Programmable Logic Controller (PLC) was developed. We’ll examine the early history of the PLC - not just the technology, but also the inspiration of the inventors as well.
Digital control systems are particular about the direction of current flow from sensors and input devices. The terms…
Digital control systems are particular about the direction of current flow from sensors and input devices. The terms sourcing and sinking (often abbreviated source and sink) are among the more confusing ratings found on I/O module datasheets. Part 1 of a 3-part series.
Any industrial electrician can instantly recognize a relay, but when it comes to wiring, why are the terminals numbered…
Any industrial electrician can instantly recognize a relay, but when it comes to wiring, why are the terminals numbered in such apparently random order?
One of the most visible elements of industrial safety is the use of lock-out-tag-out (LOTO) devices, familiar to those…
One of the most visible elements of industrial safety is the use of lock-out-tag-out (LOTO) devices, familiar to those with experience. But, if you are new to the workforce, a brief introduction may be helpful.
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.
Learn the basics of connecting multiple PLCs to an HMI using various data types.
Learn the basics of connecting multiple PLCs to an HMI using various data types.
Noise signal sources occur primarily from radiofrequency interference (RFI), often in the form of impulse functions or…
Noise signal sources occur primarily from radiofrequency interference (RFI), often in the form of impulse functions or arcing. How do you mitigate process noise from your control system?
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?
Automation supplier Phoenix Contact released several new PLC and communication technologies. What are they and how can…
Automation supplier Phoenix Contact released several new PLC and communication technologies. What are they and how can they help control engineers?
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