Siemens Automation and Drives (A&D) is launching two new function packages with integrated evaluation of the Siguard 3RG7844 light curtains and light grids on the market: the Muting and Sequencing Control packages will be available in addition to the Standard and Blanking function packages. Integration of the evaluation unit into the light curtain saves installation costs because it requires less wiring. Siguard light curtains and light grids are active type 4 optoelectronic protection devices in compliance with IEC/EN 61 496-1;-2. The system consists of a sender and a receiver, between which a two-dimensional protection field of infrared light rays is generated.
The Muting function is a normal suppression of the protective function which is required, for example, for transporting materials into a danger zone. Muting is triggered by at least two independent signal sources. Parallel muting is used when the dimensions of the transported goods are not constant or when space is limited.
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