Auto detection of guard locking device
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United States of America Patent
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Sep 5, 2017
Grant Date -
Oct 30, 2014
app pub date -
Apr 29, 2014
filing date -
Apr 29, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A safety switching device for driving a plurality of different kinds of guard locking devices is provided. The safety switching device comprises a first terminal and a second terminal for connecting a guard locking device, and a safety processor adapted for controlling drive signals at the first and the second terminal to drive the guard locking device. The safety processor is adapted for determining a kind of a guard locking device connected to the first and/or the second terminal out of a plurality of different kinds of guard locking devices by detecting external electrical connections between the first terminal, the second terminal, and a reference potential. The safety processor is further adapted for controlling the drive signals depending on the determined kind of the guard locking device.
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