BEI Sensors H38D-CW-8NB-7273R-SC-UL Rotary Encoder

BEI Sensors H38D-CW-8NB-7273R-SC-UL is an absolute optical rotary encoder in BEI’s H38D family, delivering a fixed angular position with power-down retention thanks to its absolute sensing architecture. It employs open-collector outputs (7273R) with a current sink capability up to 70 mA per channel, enabling straightforward interfacing to PLCs and digital controllers. The model designation includes CW-SC-UL, indicating a clockwise code option and a UL-listed configuration suitable for use in hazardous locations (UL Class I, Group D environments). Featuring a 3/8-inch nominal shaft, the device is built for rugged industrial environments where reliable angle information is critical for precise motion control and system safety. Common applications include motor feedback for automated machinery, robotics, and control systems in sectors such as oil and gas, chemical processing, and mining where robust absolute position sensing and certified safety ratings are required. BEI’s H38D line is known for broad compatibility across BEI’s sensor ecosystem, offering deterministic, real-time angular data that helps accelerate commissioning and improve repeatability in complex automation setups.