Allen-Bradley 871D-BW2N260-N3 Cylinder Position Sensor

Allen-Bradley 871D-BW2N260-N3 is an in-port cylinder position sensor from the 871D inductive sensor family that provides non-contact position feedback for a cylinder piston. It is a 2-wire AC/DC device with a normally open output, designed to be mounted in the cylinder port to deliver a simple switch signal to a PLC when the piston reaches a defined position. This model is a discontinued Rockwell Automation product, with a discontinuation date of July 15, 2021, and its functional replacement is the 871D-LW2N260-N3, which maintains the same sensing characteristics in a different housing. Typical applications include automated manufacturing lines and machine automation requiring end-of-stroke sensing, safety interlocks, or sequencing in hydraulic or similar cylinder actuation, where a compact inductive sensor provides reliable position feedback without contact. Inductive sensing detects metal targets on the piston rod, enabling robust, non-contact position feedback in rugged industrial environments.