Allen-Bradley 847A-Q42C-RA01024 Rotary Encoder

Allen-Bradley 847A-Q42C-RA01024 is a high-resolution incremental optical encoder from Rockwell Automation’s 847A family, designed for precise rotary feedback in automated machinery. It accepts a supply of 8–30 V DC and outputs quadrature A and B signals plus an index Z signal via a line-driver interface, enabling reliable, noise-tolerant signaling in industrial environments. The RA01024 suffix indicates a 1,024-pulse-per-revolution configuration, providing finer position resolution for servo and motor-drive feedback loops. Typical applications include machine tools, packaging lines, printing, and robotics, where accurate speed and position information is essential for closed-loop control and synchronization with PLCs or motion controllers. The 847A family is built for rugged industrial use, offering compatibility across multiple mounting and shaft options to fit a wide range of mechanical interfaces while maintaining robust electrical performance in harsh conditions.