Device and method for safety instrumented control of a machine
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United States of America Patent
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Jan 5, 2021
Grant Date -
Apr 25, 2019
app pub date -
May 8, 2017
filing date -
May 6, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A device and a method for safety instrumented control of a machine, wherein the machine is equipped with an electric drive, is operated by a person and has at least one metal component capable of causing injury in the event of a mechanical interaction with said person. The device is equipped with a left-hand and right-hand conductive glove in the form of an under-glove, a left-hand and right-hand insulating glove in the form of an over-glove, a control device which controls the electric drive of the machine and to which the conductive gloves can be connected, and a resistance test device of the control device which compares the resistance between the left-hand and right-hand conductive gloves to a predetermined minimum resistance and a predetermined maximum resistance and prevents the drive from being switched on if the detected resistance is less than the minimum resistance or greater than the maximum resistance.
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