Rotary encoder provides an inexpensive way to measure axis rotation or for example the rotation of the motor in conveyor lines. In an electric motor, the frequency converter can adjust the engine speed using the measurement provided by the rotary encoder. Rotary encoders are available with different pulse volumes, which makes it very easy to combine it with controls.
Rotary encoders are available with optic or magnetic measuring. Typically optic encoders can achieve higher pulse numbers per round. The exception is rotary encoders reading from a magnetic strip, which can achieve very high pulse figures depending on the length of the magnetic strip.
