Single-channel safety output

A safety switching device for fail-safely switching on and off an electrical load, and to a system comprising at least two safety switching devices which interact in a fail-safe manner via a single-channel. The safety switching device comprises a fail-safe control unit, a first and a second electron...

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Bibliographic Details
Main Authors Lorenz Dirk, Papenbreer Rudolf, Helpenstein Thomas, Machuletz Norbert
Format Patent
LanguageEnglish
Published 13.03.2018
Subjects
BASIC ELECTRIC ELEMENTS
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
EMERGENCY PROTECTIVE DEVICES
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
GENERATION
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
RELAYS
SELECTORS
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Summary:A safety switching device for fail-safely switching on and off an electrical load, and to a system comprising at least two safety switching devices which interact in a fail-safe manner via a single-channel. The safety switching device comprises a fail-safe control unit, a first and a second electronic switching element connected with a first and a second output terminal; and at least one input terminal for receiving a first switching signal that causes a switching of said switching elements. Said first and second switching elements each comprise an output which provides depending on the first switching signal an output signal having a first or second potential. A third output terminal connects said safety switching device to a second safety switching device, providing a clocked signal depending on the first switching signal and being monitored by said control unit for performing a cross fault detection.
Bibliography:Application Number: US201615152780