For many retrofit projects, the use of a VFD seems like a “no brainer.” Drives are now cheaper and more reliable than ever, and the benefits of efficient control of motors can’t be beat. Still, there ...

It is interesting to look at figures from the Energy Information Administration about where energy gets consumed in our economy. These figures reveal that industrial uses account for 31% of all energy ...

Compressed air is a vital utility to most commercial and industrial operations. It runs essential tools and machinery, provides power to material-handling systems, and clean air to processes. Yet ...

Over 50% of Earth’s total electricity consumption is used for operating motors and motor systems. HVAC contractors and technicians encounter motors in a variety of different applications, and aspects ...

The manufacturing industry is at a crossroads, facing the critical challenge of maximizing efficiency. Meeting this demand requires optimizing energy consumption, reducing carbon footprints and ...

Prior to the advent of the adjustable-speed drive (ASD), the polyphase induction motor operated as a constant-speed motor. Figure 1 shows the well-known torque and current curves versus speed for the ...

In this EC&M Tech Talk, electrical code and safety specialist Randy Barnett takes a look at variable frequency drives – what ...

A grouping of Mitsubishi Electric’s AC drives or variable frequency drives (VFDs). In the competitive landscape of machine design, engineers in food, pharmaceutical and manufacturing sectors face the ...

This short video from [ProShorts 101] shows us how to build a variable speed disc sander from not much more than an old hard drive. We feel that as far as hacks go this one ticks all the boxes. It is ...