Allen-Bradley 845H-SJDZ14FWY2C Incremental Encoder

Allen-Bradley 845H-SJDZ14FWY2C Incremental Encoder is a size-25 optical incremental encoder in the 845H family, delivering 1024 pulses per revolution (PPR) for high-resolution position and speed feedback in automated equipment. Its rugged construction is designed for harsh environments, with a NEMA Type 4/Type 13 enclosure rating that helps protect internal electronics from dust, water, and splashes in production settings. With a 210 kHz frequency response, this encoder can support fast motor signaling and tight control loops in high-speed machinery. As an optical incremental device, it generates continuous A and B channel signals (and typically a Z reference pulse in many configurations) that a motion controller or servo drive uses to track position and velocity precisely. This model is commonly used in closed-loop motion systems and is compatible with Rockwell Automation controllers and servo drives, making it a practical choice for CNC machines, packaging lines, robotics, and conveyors where accurate feedback is critical. The 845H family is known for rugged performance and reliable feedback in industrial environments, and this variant—SJDZ14FWY2C—offers 1024 PPR resolution in a size-25 footprint to meet demanding precision and speed requirements.