Global Patent Index - EP 1037234 A2

EP 1037234 A2 2000-09-20 - Safety switching circuitry

Title (en)

Safety switching circuitry

Title (de)

Sicherheitsschaltanordnung

Title (fr)

Circuit de sécurité avec contacteurs

Publication

EP 1037234 A2 (DE)

Application

EP 00102642 A

Priority

DE 19911698 A

Abstract (en)

The safety cut-out switch has at least 2 series opening switches (12a,12b,12c) coupled to a microprocessor evaluation unit (11), for providing a safety signal, e.g. an alarm or cut-out signal, upon opening of at least one of these switches, which each have a code signal generator (13a,13b,13c), coupled to the evaluation unit via a common diagnosis line, for providing a code signal identifying the operated switch.

Abstract (de)

Die Erfindung betrifft eine Sicherheitsschaltanordnung mit wenigstens zwei in Serie an eine Auswerteeinheit (11) angelegten Öffnungsschaltern (12a, 12b, 12c), wobei die Auswerteeinheit (11) bei Öffnen wenigstens eines der Öffnungsschalter (12a, 12b 12c) ein Sicherheitssignal, insbesondere ein Alarm- und/oder Abschaltsignal auslöst und feststellt, welcher der Öffnungsschalter (12a, 12b, 12c) geöffnet wurde. Die Erfindung besteht darin, daß wenigstens einem und vorzugsweise allen Öffnungsschaltern (12a, 12b, 12c) ein Codesignalgenerator (13a, 13b, 13c) zugeordnet ist, der bei Öffnen des zugeordneten Öffnungsschalters (12a, 12b, 12c) über eine zur Auswerteeinheit (11) führende, allen einen Codesignalgenerator (13a, 13b, 13c) zugeordneten Öffnungsschaltern (12a, 12b, 12c) gemeinsame Leitung, insbesondere eine Diagnose-Leitung (15) oder Sicherheits-Leitungsabschnitte (16a, 16b, 16c), ein für den betreffenden Öffnungsschalter (12a, 12b, 12c) charakteristisches Codesignal an die Auswerteeinheit (11) liefert, welches in der Auswerteeinheit (11) analysiert und als von dem betreffenden Öffnungsschalter (12a, 12b, 12c) kommend erkannt wird. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01H 47/00

IPC 8 full level (invention and additional information)

H01H 47/00 (2006.01)

CPC (invention and additional information)

H01H 47/002 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1037234 A2 20000920; EP 1037234 A3 20030402; EP 1037234 B1 20041215; AT 285117 T 20050115; DE 19911698 A1 20000921; US 6417582 B1 20020709

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