HOME PM STEPPING MOTORS

PM Stepping Motors are highly precise, digitally controlled motors that are able to provide reliable operation without using detectors to sense or indicate position. The operation of the motor is controlled through electrical pulses. The direction of current flowing through the windings of the motor is switched with each pulse. The electrical pulse is converted into shaft rotation in steps of a fixed angle. Together with the driver, it constitutes an open loop controlling system, which is of low cost and simple to construct. Compared to Hybrid Stepping Motors, PM Stepping Motors has a more simple design. As a result of this design, the step angle is bigger. But on the other hand this motor design is very cost saving and can be produced in smaller dimensions.
Characteristics
Precise Position Control
The specified number of pulses determines the output degree(s) generated.
Linear Speed Selection
The running speed is linearly variable and determined by the frequency of the pulses.
Forward & Reverse, Pause and Holding Function
The forward & reverse rotation is controlled by the polarity. There is still holding torque even while the motor rotor is being locked. There is still current flowing through the motor winding, but no pulse signal creating rotation from the outside controller.
Low Speed Feature
Low frequency pulses being input, a stepping motor can operate at very low rotating speeds. This can be done without a speed reduction gearbox and thereby save power and maintain precision.
Long Life
The brushless design combined with an advanced bearing system provides PM stepping motors with a long life. Stepping motors are widely being used in many types of digitally controlled motion control applications, such as printers, intelligent (performance) stage lighting, office, bank and industrial equipment, medical, packaging, textile, telecommunication, aerospace, robotics and automotive.