The cyber dynamic motors exploit the so-called Wiegand effect to produce tiny amounts of energy. As their shafts turn, a Wiegand sensor reacts with the changing magnetic field, generating count pulses and the energy needed to process the signals and store them in non-volatile memory.
The pulses are counted independently of the speed of rotation, generating absolute values, even at low speeds. It is no longer necessary to find a reference position when a motor is started after servicing, a power failure or emergency stop. The drives are said to be more reliable than motors with single-turn or incremental encoders. They can also be positioned more accurately, due to the 16-bit resolution of the multi-turn system.
The non-contact, wear-free encoders are not affected by shocks, vibration or temperatures up to 125°C.