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Sensorless brushless gearmotors - Bison Gear & Engineering Corp.

The new 34-frame AUTONOmotor gear-motors eliminate position sensors and wiring. The sensorless brushless dc (SBLDC) parallel-shaft gearmotors are powered by totally enclosed, nonventilated (TENV) brushless motors with power up to 1/6 hp (124 W).

DSP technology facilitates implementation of sensorless control algorithms and eliminates position sensors (and associated wiring) required in conventional BLDC motor-control systems. The motors come in 11 standard versions with gear ratios from 5:1 to 215.6:1 and rated output speeds from 470 to 11 rpm with a 10:1 speed range. A supplied potentiometer or a 0 to 5-Vdc signal adjusts speed. Continuous output torques range from 19 to 300 lb-in. The gearmotors use all-steel gearing and oil-bath lubrication.

Bison Gear & Engineering Corp., 3850 Ohio Ave., St. Charles, IL 60174, (800) 283-4766,

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