Many VFDs use digital inputs to control operation, rather than PLC-driven network communications. Learn about 2-wire and 3-wire digital input control schemes for…
Many VFDs use digital inputs to control operation, rather than PLC-driven network communications. Learn about 2-wire and 3-wire digital input control schemes for ABB, Omron, Rockwell, and others.
There are many different kinds of electric motors used for industrial power transfer, but there are also hydraulic and…
There are many different kinds of electric motors used for industrial power transfer, but there are also hydraulic and pneumatic motors that can lend advantages in some situations.
Converting thermal energy into electrical signals, temperature sensors such as RTDs and thermocouples are fundamental in…
Converting thermal energy into electrical signals, temperature sensors such as RTDs and thermocouples are fundamental in the maintenance and operation of industrial environments and equipment.
Calibration can be a time-consuming process requiring expensive traceable tools, but high-accuracy signals result in…
Calibration can be a time-consuming process requiring expensive traceable tools, but high-accuracy signals result in higher-quality products, better customer satisfaction, and, ultimately, greater returns.
Operating just outside the visible light spectrum, infrared energy emits from anything with heat stored in it. Detecting…
Operating just outside the visible light spectrum, infrared energy emits from anything with heat stored in it. Detecting this energy, infrared sensors find use in applications from proximity detection to temperature measurement.
Arduino’s Opta mini PLC platform is supported by the new PLC IDE. Learn to create and download your first program and…
Arduino’s Opta mini PLC platform is supported by the new PLC IDE. Learn to create and download your first program and take advantage of built-in I/O for an easy introduction to the platform.
Analytics from data algorithms can predict machine failures and provide diagnostics—but what should we measure? Then,…
Analytics from data algorithms can predict machine failures and provide diagnostics—but what should we measure? Then, once the information has been collected, what trends might point to problems?
Learn about the history, framework, and current uses of the Open Platform Communications United Architecture (OPC UA)…
Learn about the history, framework, and current uses of the Open Platform Communications United Architecture (OPC UA) communication protocol in industrial automation.
A subset of light is the focused cohesive beams that make up lasers, which can be used in optical sensing. These devices…
A subset of light is the focused cohesive beams that make up lasers, which can be used in optical sensing. These devices provide benefits of greater range, precision, and even mapping for mobile robotics.
ASCII is a familiar acronym, found in applications like Modbus communications and string data types—but what is it, and…
ASCII is a familiar acronym, found in applications like Modbus communications and string data types—but what is it, and what does ASCII mean for automation engineers?
Cybersecurity is all about processes and people. A lot of threats can be mitigated through technology, but only if people…
Cybersecurity is all about processes and people. A lot of threats can be mitigated through technology, but only if people understand how cybersecurity affects control systems and related technology.
Optical sensors are one of the most popular sensor types in industrial automation. This article covers optical sensor…
Optical sensors are one of the most popular sensor types in industrial automation. This article covers optical sensor basics and commonly used types, including fiber optic, photoelectric, and optical encoders.
Industrial sensors can be found in nearly every modern industrial process, regardless of complexity. Learn the history,…
Industrial sensors can be found in nearly every modern industrial process, regardless of complexity. Learn the history, evolution, and variety of sensors that make manufacturing the modern marvel we see today.
Motors consume the highest current during startup—this is a well-known fact. But logically, the slowest speed should…
Motors consume the highest current during startup—this is a well-known fact. But logically, the slowest speed should relate to the lowest power consumption. Why, then, is inrush current so high for motors?
Programming simple coil and contact commands is an easy matter in most PLC IDEs. Connecting and configuring analog inputs…
Programming simple coil and contact commands is an easy matter in most PLC IDEs. Connecting and configuring analog inputs can be more challenging with various bit resolutions and conversion commands.
Insufficient controller memory can result in reduced HMI and SCADA response speed and longer scan times. Know the…
Insufficient controller memory can result in reduced HMI and SCADA response speed and longer scan times. Know the differences between RAM, ROM, and removable memory, and how to keep program sizes in check.
Computers understand values as long strings of binary bits, but we humans convert them to other systems for convenience.…
Computers understand values as long strings of binary bits, but we humans convert them to other systems for convenience. Decimal makes sense, but what about hexadecimal and the lesser-known octal systems?
Operating voltage, linearity, dimensions, polarity protection, range… When it comes to sensors, every situation calls…
Operating voltage, linearity, dimensions, polarity protection, range… When it comes to sensors, every situation calls for understanding these specs in detail during design, purchasing, and installation.
Large motors require a circuit to turn on and off. This may be as simple as a single on/off drum-type switch or as…
Large motors require a circuit to turn on and off. This may be as simple as a single on/off drum-type switch or as elaborate as a VFD unit. Learn about some common control circuit designs for typical three-phase motor requirements.
As data becomes available, maintenance can shift from being done on a rigid schedule to a more cost-effective plan of…
As data becomes available, maintenance can shift from being done on a rigid schedule to a more cost-effective plan of fixing as required, even turning attention to the root cause of maintenance woes.