Variable Speed Motor

The DynaMotor from DynaMotors Inc. (Cleveland, OH) is designed to produce more torque than motors of comparable size. For instance, a NEMA 56 frame TEFC DynaMotor generates 11 foot-lb. of torque at 600 rpm — three times that of a comparably sized PWM inverter and AC motor, according to the company.

The motor provides more than double the torque of competitive technologies from 150 to 1,000 rpm. It can drive equipment directly, without the need for gearing, chains or belts and pulleys. It is connected directly to an AC line and controls the induced power on a wound rotor, instead of using an inverter on the incoming AC line.

The DynaMotor can be wired to the AC bus nearest the machine and controller by either wired commands or by wireless technology. It can also accept programmed analog or digital signals.

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