The Series BNS30 and BNS300 coded-magnet sensors are designed for use as a safety interlock switch on movable
machine guards/articulating robot arms. Each sensor set consists of a multiple reed switch unit and a coded-magnet
actuator. The reed switches, wired in series, will only close in the presence of their matched magnetic field array.
Both switch and magnet assemblies are sealed to IP67 (submersible) standards. Their tamper-resistant design
prevents bypassing with a simple magnet or improperly coded magnetic field. In addition, the BNS module features an
integral LED display of switch status and a 1-meter long prewired pigtail.
The reed switch assembly is typically mounted to a stationary portion of a guard structure, with the coded-magnet assembly
mounted to the movable element of the machine guard. When the guard is closed, and the matched magnetic field aligns
with the reed switch unit, the switches will close. When the guard is open, or the required magnetic-field array is not
properly aligned with the reed switch assembly, the sensor output will remain “off.”
The sealed, compact units are ideal for use on movable machine guards in hostile environments. Typical applications
include food processing equipment, chemical processing equipment, woodworking machinery, packaging machinery,
and articulating robot arm rest position sensing.