Non-contact door sensor
December 1st 2006

The BNS 260 from Schmersal is a compact, coded noncontact guard-door monitoring sensor, which the company sees as an alternative to electromechanical safety switches for monitoring the position of safety guards.

The coded NC contact is said to guarantee a high level of safety which, when used with an appropriate safety-monitoring module such as Schmersal's AES series, meets the requirements of Control Category 4 to EN 954-1 or SIL Level 3 to IEC 61508. It is also suitable for applications of PDF class M to EN 60204-1. Users can choose between 1 NO/1 NC and 2 NC contacts. Signalling contact can be NO or NC.