Haydon Kerk Motion Solutions Inc., a leading manufacturer of
precision linear motion products, 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 hall effect is an ideal technology with a
virtually unlimited on-off cycle life due to the non-contact operation of the
switch. The Haydon can- stack linear actuator with the integrated proximity
sensor is perfect 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 three wire
device and requires a supply voltage of 3.8 VDC minimum to 24 VDC maximum with
a current consumption of 10 mA max.