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 ...

The line of adjustable-speed drives provide accurate and repeatable speed settings and can be used as a prime mover connected to a motor, or as a secondary drive The line of adjustable-speed drives ...

Imagine an easy-to-install industrial technology that reduces energy consumption, eliminates mechanical vibrations and electronic harmonics, relaxes alignment tolerances and cuts maintenance needs.

In order to clear up confusion over motors powered by adjustable speed drives, NEMA’s Industrial Automation Control Products and Systems section and Motor and Generator section recently developed the ...

Variable-pitch drives are the simplest of all mechanical adjustable-speed mechanisms. Most of these drives use rubber belts. However, chain types are unmatched in regard to its particular strong ...

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 ...

The new IE6 SynRM increased safety motor covers ratings from 110 kW, with IE5 versions available for up to 90 kW.

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 ...

The GHS VSD⁺ 350 - 900 series of intelligent vacuum solutions from Atlas Copco Compressors LLC is available with variable ...

The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...