Optoelectronic sensor for safeguarding a hazardous area

Details Optoelectronic sensor for safeguarding a hazardous area Optoelectronic sensor for safeguarding a hazardous area

2009-11-13

2011-11-15

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S208400

Reexamination Certificate

active

08058605

ABSTRACT:
An optoelectronic sensor for safeguarding a hazardous area, such as a light grid, has a first and a second sensor part. The two sensor parts are arranged at a spatial distance from one another. Each sensor part has a plurality of transmitting elements for generating transmitted beams and a plurality of receiving elements for receiving the transmitted beams. In this way, a plurality of transmitted beams in opposite directions are formed between the sensor parts. Each sensor part has at least one evaluation circuit, which is coupled to the receiving elements of the respective sensor part. Each evaluation circuit is designed to generate a switch-off signal in a manner dependent on the respectively coupled receiving elements. In a preferred configuration, each sensor part has a plurality of evaluation circuits which are coupled to one another to form a series arrangement of evaluation circuits, and which are additionally coupled to a common data bus connection.

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DIN EN 954-1; Safety-related parts of control systems; Dec. 1996; 34 pages.
EN ISO 13849-1; Safety of machinery—Safety-related parts of control systems—Part 1: General principles for design; Nov. 2006; 97 pages.

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