Incremental optical encoder is a device converting physical data to digital mode. In the motion control systerm, the function of incremental optical encoder is converting angle and position information to digital pulse signal. The A,B,Z 3 channels output in wave form. Direction and speed can be judged from the 3 channels.

An incremental rotary encoder working principle is provides cyclical outputs (only) when the encoder is rotated. The incremental rotary encoder is the most widely used of all rotary encoders due to its low cost and ability to provide signals that can be easily interpreted to provide motion related information such as position and velocity.

Incremental hollow shaft encoder installed more flexible. The motor shaft is directly inserted into the hollow shaft of the encoder and fixed or locked by the elastic piece, which not only saves space, but also does not need to add other accessories when installing. This product also has shock absorption effect, ensures coaxiality, and is used in a large amount of precision and space situations. The hollow shaft encoder is also called blind hole encoder. It is installed in a similar way to the end hollow shaft encoder. It also has the advantages of high concentricity and space saving. The design of the hollow shaft is higher than that of the end hollow shaft encoder.