Using a Raspberry Pi and the OpenPLC software platform, create a simple PLC that can be programmed in ladder diagrams with remote access and I/O monitoring dashboards.
Using a Raspberry Pi and the OpenPLC software platform, create a simple PLC that can be programmed in ladder diagrams with remote access and I/O monitoring dashboards.
This article investigates the basic components and wiring conventions for common three-phase motor starter…
This article investigates the basic components and wiring conventions for common three-phase motor starter configurations, including direct online, reversing, and star-delta.
Complete wiring guide for 3-phase motor starters with and without overload (OL) relays.
Complete wiring guide for 3-phase motor starters with and without overload (OL) relays.
Electrical and mechanical measurements are often labeled with "RMS" and "True RMS." Aside from the simple math…
Electrical and mechanical measurements are often labeled with "RMS" and "True RMS." Aside from the simple math definitions we learned in electronics class, why is this distinction actually important?
Have you ever heard of a relay? Of course you have. There are many different kinds, plus hundreds of different trade…
Have you ever heard of a relay? Of course you have. There are many different kinds, plus hundreds of different trade lingo names. What are some of the most common, and how do we use them?
Knowing what kind of control system to use: that’s a question that must be answered before setting up the factory…
Knowing what kind of control system to use: that’s a question that must be answered before setting up the factory floor. Why would someone choose pneumatic over electrical controls?
Within motors, two very different types of resistance are evident. The resistance of the windings is measured with a…
Within motors, two very different types of resistance are evident. The resistance of the windings is measured with a normal multimeter. But what is insulation resistance, and how is it measured?
In order to trace control system problems to the core, the ability to read and interpret various resources, from…
In order to trace control system problems to the core, the ability to read and interpret various resources, from facility-level diagrams to machine-level wiring layouts, is critical.
Converting different numbering systems is quite common in PLCs and structured text codes. Why? Because people read…
Converting different numbering systems is quite common in PLCs and structured text codes. Why? Because people read decimals. Computers read binary. Processors read sets of bits. Not so simple.
Digital controls like VFDs and soft starts have advantages by elongating start time, but simple strategies for starting…
Digital controls like VFDs and soft starts have advantages by elongating start time, but simple strategies for starting motors with a reduced current draw, like star-delta (or wye-delta) are common.
It’s important to consider your PLC tag naming convention when using different styles. Learn when and why you might…
It’s important to consider your PLC tag naming convention when using different styles. Learn when and why you might even use more than one, depending on the circumstances and scope of your project.
We depend on circuit breakers all the time, even when you have a day off or work from home. These overcurrent protection…
We depend on circuit breakers all the time, even when you have a day off or work from home. These overcurrent protection devices keep machines running safely, reducing the risk of fires and arcing.
Rockwell Automation’s Allen-Bradley control hardware catalog has long included many series that start with 17xx, but…
Rockwell Automation’s Allen-Bradley control hardware catalog has long included many series that start with 17xx, but what are these lineups, and what function do they serve?
When we need to change the speed of an industrial motor, whether to control a process or save energy costs, we turn to…
When we need to change the speed of an industrial motor, whether to control a process or save energy costs, we turn to the variable frequency drive, better known simply as a VFD.
In this article, we will explore real-world considerations for strain gauge performance and typical applications. We’ll…
In this article, we will explore real-world considerations for strain gauge performance and typical applications. We’ll be talking about foil and wire strain gauges, but ignoring semiconductors.
For being no more than a thin piece of metal, the strain gauge is a versatile measurement tool, from small switches to…
For being no more than a thin piece of metal, the strain gauge is a versatile measurement tool, from small switches to multi-ton machines. In this article, learn the operating principles and properties.
When inputs or outputs stop working, the equipment fails to respond and money starts slipping away. Dive into the concept…
When inputs or outputs stop working, the equipment fails to respond and money starts slipping away. Dive into the concept of troubleshooting I/O without ever opening the PLC software.
When IT and OT converge on the shop floor, it’s important to understand how and when to let a computer control the…
When IT and OT converge on the shop floor, it’s important to understand how and when to let a computer control the assignment of network addresses, or when you would rather keep it under control.
Pressures are always rising and falling in fluid systems. Sometimes the changes are extreme and lead to damage. What…
Pressures are always rising and falling in fluid systems. Sometimes the changes are extreme and lead to damage. What causes problematic pressure changes, and how can you trace them to their source?
In the world of mechanical power transmission, gears, belts, and chains dominate the landscape, but what's so special…
In the world of mechanical power transmission, gears, belts, and chains dominate the landscape, but what's so special about chain drives, and why would they be used in place of rubber belts?