Haydon Kerk Motion Solutions offers an integrated end-of-stroke proximity sensor available on the one inch 25000 Series captive linear actuators. The proximity sensor utilizes miniature Hall effect technology in an IC package mounted directly on the actuator. The can- stack linear actuator with the integrated proximity sensor is suitable for limited space applications. A highly repeatable on/off signal is accomplished using a rare earth magnet embedded directly on the end of the internal screw. As the screw moves in and out of the actuator, the magnet moves toward and away from the sensor face causing the device to switch states. The proximity sensor is designed to operate in a digital switch mode using an open-collector output through an integrated NPN transistor switch. The proximity switch is a 3 wire device and requires a supply voltage of 3.8 VDC minimum to 24 VDC maximum with a current consumption of 10mA maximum. Improvements include optimized stator tooth geometry, high energy neodymium magnets, custom engineered polymers, and larger ball bearings for greater rotor support and axial loading.
Edited by: Teoman Tugsuz