There are many options to vary the speed of motors in automated machines. Depending on the application, servo-motor drive and dc drive can be used, but the star of the show is the variable frequency drive (VFD). When the cost, reliability and ease of operation and use are considered, it’s hard to beat the VFD when there is a need to vary the speed of motors controlling conveyors, belts, pumps, blowers and fans.Sometimes constant speed just isn't enough. Many of you mechanical types are happy to change the diameter of the pulley or sprockets driving the rotating motion, but electronics is much more flexible for adjustable motor speed control. There are some basics to…
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The basic skills of a controls engineer are in demand now, but being a specialist instead of a jack-of-all trades is more efficient.
Never have more I/O system options been available to the controls designer, and it's OK to use several different formats
A simple mistake is all it takes to remove machine tooling and control hardware from a system in spectacular fashion.
