Figure 1. The chart shows energy savings achieved by Refrigeration Service Co. with use of a variable-speed controller. EDITOR’S NOTE: This material was prepared by Heatcraft Worldwide Refrigeration.

It provides continuously variable motor speed in response to 0-10 VDC or 4-20 maDC input signals. A free, four-page data sheet on the controller is available. Varidigm Corp., 3070 Ranchview Lane, ...

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A range of variable-speed drives (VSDs) will be launched at the 2025 Kwa Zulu-Natal Industrial Technology Exhibition (KITE), to be held in Durban from 22 to 24 July. Electronic motor control solutions ...