Temperature tripping device
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United States of America Patent
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Aug 4, 2009
Grant Date -
Sep 11, 2008
app pub date -
Mar 7, 2008
filing date -
Mar 7, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a temperature tripping device for reliably shutting down a load, especially a motor, having at least one input for receiving at least one temperature-dependent sensor signal as an input signal, a first evaluation circuit for generating a first output signal if the input signal reaches a preset value, and means for generating a trip signal if the output signal is generated. In addition, a second, redundant, evaluation channel is provided which is supplied with the same input signal as the first evaluation channel and which generates a second output signal if the input signal reaches the preset value, wherein the means for generating a trip signal are connected to the two evaluation channels and generate the trip signal if at least one of the two output signals is generated.
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