Door handle takes safety sensor onboard
A
Schmersal UK product story
Edited by the Engineeringtalk editorial team
Jun 15, 2004
The BNS-B20 is a novel door handle that features an integrated coded magnetic safety sensor.
The BNS-B20 is a novel door handle that features an integrated coded magnetic safety sensor.
It is designed for small to medium size guard doors and allows machine designers to specify a single assembly instead of a separate door handle and safety switch.
Compared to standard safety switches with mechanical actuators, the BNS-B20 offers a number of significant advantages.
The noncontacting coded magnetic safety sensor is positioned on the door profile and provides an easy to clean, visually attractive solution.
Two latching magnets are also accommodated in the handle to hold the door in the closed state to a maximum of 100N.
By eliminating the need for a mechanical actuator, the BNS-B20 does not need precise door alignment to operate effectively; nor is it subjected to mechanical wear, which means it will have a significantly longer service life.
Also, the compact switch doesn't protrude into free space when the guard door is open, eliminating another potential hazard.
Depending on the connected safety control module, the BNS-B20 offers a Control Category 4 rating according to EN954-1 and class PDF-M (monitoring) according to IEC60947-5-3.
It is easily mounted on commercially available aluminium profile sections and can be used on hinged and sliding doors that close to the right or left.
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