Sequential function charts (SFCs) are a great tool when processes require sequence control, but things can get complicated fast. Here are some ways to create…
Sequential function charts (SFCs) are a great tool when processes require sequence control, but things can get complicated fast. Here are some ways to create better SFC programs and applications.
Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do…
Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do explosions occur, and what practices exist to reduce such risk for equipment and workforce?
Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief…
Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief tutorial on how an M5Stack Core can offer a simple, effective low-cost Arduino OpenPLC HMI solution.
Programmable encoders provide engineers real flexibility to adjust process parameters. From operating theory to…
Programmable encoders provide engineers real flexibility to adjust process parameters. From operating theory to programming methods, here’s everything you need to know to begin leveraging these handy devices.
Driving motors is one of the most fundamental automation tasks, but understanding and selecting the proper motor soft…
Driving motors is one of the most fundamental automation tasks, but understanding and selecting the proper motor soft starter for your application may require more investigation than you thought.
Using the right motor for the right task is critical - but what happens if the motor is connected to the wrong supply? It…
Using the right motor for the right task is critical - but what happens if the motor is connected to the wrong supply? It is never recommended, but important to quickly understand symptoms of incorrect wiring.
Single-phase motors are common in household and small industrial devices. They are a bit more complex than 3-phase…
Single-phase motors are common in household and small industrial devices. They are a bit more complex than 3-phase models, so it’s important to recognize failure modes and common symptoms.
Stepper motor control can be useful for motion applications. Learn the circuit connection and programming instructions…
Stepper motor control can be useful for motion applications. Learn the circuit connection and programming instructions for implementing stepper motor control using GX Works 2 on MELSEC FX-Series PLCs.
Three-phase motors are a backbone of the modern industrial control landscape. But plenty of applications still rely on…
Three-phase motors are a backbone of the modern industrial control landscape. But plenty of applications still rely on single-phase motors. Can these types of motors be reversed, and if so, how?
Direct current (DC) motors have existed since the late 19th century. What sets these motors apart from AC models, how do…
Direct current (DC) motors have existed since the late 19th century. What sets these motors apart from AC models, how do you control them, and how can you tell when it’s time to repair or replace them?
Rubber belts have lived under the hood of nearly every car since they first took to the streets, but they also transmit…
Rubber belts have lived under the hood of nearly every car since they first took to the streets, but they also transmit power through all kinds of industrial machine drives as well.
Although electrical systems often receive the highest praise for advancement, precision, and technological innovation,…
Although electrical systems often receive the highest praise for advancement, precision, and technological innovation, the world would be stuck without mechanical power delivery systems like gear drives.
Many VFDs use digital inputs to control operation, rather than PLC-driven network communications. Learn about 2-wire and…
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.
Field-oriented control (FOC), also called vector control, can control 3-phase alternating current motors and brushless DC…
Field-oriented control (FOC), also called vector control, can control 3-phase alternating current motors and brushless DC motors. Read more to learn its advantages, how it works, and its best applications.
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?
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.
Air motors are common in process industries, mainly used in hazardous areas. This article introduces the features and…
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.
DC motors are an old technology still commonly used in industry. This hands-on article shows how to implement a Count Up…
DC motors are an old technology still commonly used in industry. This hands-on article shows how to implement a Count Up (CTU) counter on an Arduino OpenPLC Simulator to control a low-voltage DC motor.
We are taught that parallel circuits maintain equal voltage across all branch resistors, equally sharing the source…
We are taught that parallel circuits maintain equal voltage across all branch resistors, equally sharing the source voltage. But reality is often far from ideal, and individual devices certainly impact the rest of the circuit.