Stepper motors are a form of a brushless motors that has a very high pole count, 100 poles or 50 pole pairs. Stepper motors are considered a low-cost simple motion control system where a 100 pole motor can rotate the rotor in 200 unique positions (steps) during one rotation of the motor shaft. Combined with a simple step and direction input drive, stepper motors are very simple motion control building blocks used extensively in lower end motion control systems. Traditional stepper motor systems operate in an “open loop” mode where the motor shaft rotation is assumed to occur, given the number of steps provided to the motor drive. This results in “over specifying” the output torque (essentially motor size) to ensure the motor does not stall or fail to rotate the number of input steps.
Install the POSITAL kit encoders on your stepper motor and enjoy the benefits of absolute multiturn measurement.