Alps Alpine has expanded the scope of applications for its encoders from audio equipment to automotive products and household appliances, catering to customer needs with a broad lineup that includes long-life metal shaft types with minimal shaft play; insulated shaft types providing excellent cost performance; ring types with extensive inner and outer diameter variations; and compact, surface mount through shaft types.
Codes are allocated to each angle of shaft rotation or shaft travel position. Output is a code signal corresponding to the absolute position. Rotary encoders mainly use the Gray code system to express the current position of the control shaft.
Output, generated by rotation or movement of the control shaft, is multiple pulses with different output timing (phase difference). Pulse output is generated corresponding to the change in shaft position, and direction of rotation is identified from the output timing of the different signals.
The downside of a contact-type encoder is a shorter operating life than other types. For that reason, Alps Alpine also supplies a magnetic encoder, the EM11B Series, which achieves both a guaranteed operating life of 1 million cycles and an excellent feel.
Incremental Two Phase and 3 Phase Ring Encoders. From 21mm to 50 mm in size.
