Safety switching device for safely switching off an electrical load
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United States of America Patent
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Oct 26, 2004
Grant Date -
Jul 24, 2003
app pub date -
Jan 31, 2003
filing date -
Aug 1, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a safety switching device for safely switching off an electrical load such as an electrically driven machine. The safety switching device has a failsafe disconnection unit and a non-failsafe signaling unit, both of which are supplied with an external control signal. The disconnection unit fail-safely switches off the electrical load as a function of the control signal but with a first delay. The signaling unit produces an external reporting signal as a function of the control signal in a non-delayed and non-failsafe manner.
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