Guard door monitor is alternative to electro-mechanical system

The BNS 260, a compact, coded non-contact guard-door monitoring sensor, which the company sees as an alternative to electro-mechanical safety switches for monitoring the position of the safety guards. Features include its compact size and the coded NC contact that guarantees 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 also choose between 1 NO / 1 NC and 2 NC contacts and the signalling contact can be NO or NC. The BNS 260 also features an optional LED, which signals the switching condition, and for applications where the sensor must be fitted in a 90° rotated position, a special actuator version with lateral active surface is available.