The FANUC A20B-2002-0300 is an industrial magnetic sensor unit, specifically engineered as a PLG spindle motor encoder for legacy FANUC Alpha Series Spindle Motors. Positioned directly beneath the motor's cooling blower fan, this sensor picks up high-speed magnetic signals to track spindle rotational position, speed loop velocity data, and timing orientation. It connects directly to the JY2 feedback port of an Alpha series serial spindle amplifier module, utilizing a Type-B communication protocol interface to ensure real-time velocity control within CNC systems. [stock available]