Allen-Bradley 845H-SJDZ24CRY1C Incremental Encoder

Allen-Bradley 845H-SJDZ24CRY1C is a size 25 optical incremental encoder (Series B) designed for harsh industrial environments. It provides A and B channel quadrature outputs with a Z index signal for reference positioning, enabling precise speed and position feedback in automation systems such as CNC machines, packaging lines, and robotic actuators. It runs on 8–24 V DC and delivers a frequency response up to 210 kHz, supporting high-speed sensing. The encoder offers 2500 pulses per revolution (PPR), delivering high-resolution feedback for closed‑loop control. Its enclosure is rated for NEMA 4 and Type 13, suitable for washdown or outdoor installations in industrial settings. The part number suffix CRY1C denotes a specific cable/connector variant within the 845H family, while Series B identifies the encoder revision. When paired with a compatible PLC or motion controller, this device provides reliable feedback for speed measurement, homing, indexing, and position control on conveyors, spindles, and other rotary axes, helping operators optimize accuracy and synchronization across machinery.