Machine Design

Matchbox-sized motor drive

A matchboxsized digital servo-drive-delivers up to 500 W of continuous power at up to 99% efficiency and a peak of 1 kW.

It weighs only 1.76 oz (50 gm). The 2-in.-long by 1.8-in.-deep by 0.6-in.-high MC Whistle miniature drive is light enough to mount to a motor housing or in close proximity to a motor. There are seven Whistle models offering voltage and current levels from 1 A, 60 V to 5 A, 100-V continuous operation. The drive is designed for use with any type of sinusoidal or trapezoidal current control. It interfaces to brush dc, brushless PM, linear and/or voice-coil motors. Power is via an external 7.5 to 95-Vdc isolated power supply. A smart supply control algorithm lets the Whistle operate with a single power supply.

Elmo Motion Control Inc., 1 Park Dr., Suite 12, Westford, MA 01886, (978) 399-0034, elmomc.com

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