Product category:
Safety relays, interlocks, control systems, electrical components
News Release from: Schmersal UK | Subject: BNS-B20 safety door handle
Edited by the Manufacturingtalk Editorial
Team on 14 June 2004
Machine door handle has own safety
sensor
Man-machine safety specialist has introduced a door-handle that features an integrated coded magnetic safety sensor so it avoids having to use a separate door handle and safety switch.
Man-machine safety specialist Schmersal has introduced the BNS-B20, a new 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
This article was originally published on Manufacturingtalk on 19 Apr 2002 at 8.00am (UK)
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Compared to standard safety switches with mechanical actuators, the BNS-B20 offers a number of significant advantages.
The non-contacting 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 doesn't 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 EN 954-1 and class PDF-M (monitoring) according to IEC 60947-5-3.
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.
For a BNS-B20 brochure, which includes selection tables, application notes and wiring diagrams, call the Schmersal customer service centre.
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