Closing Area Monitoring

If the closing area of a conveyor system shutter is monitored by means of a light barrier, then there shall exist a VdS approval and the suitability of the application in connection with the hold-open device needs to be documented in the general building inspectorate approval.
The incoming cables to the safety devices (light barriers, contact bars) shall be observed as to wire break. A wire break shall be indicated both optically and acoustically. The wire break may not lead to an interference of an hold-open release. 



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