DEVICE AND METHOD FOR THE CONTROL OF SAFETY APPARATUSES
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United States of America Patent
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Issued Date -
Jul 20, 2023
app pub date -
May 31, 2021
filing date -
Jun 16, 2020
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Abstract
A device for controlling a safety apparatus comprises at least one OSSD-type output having an output terminal to be connected to a corresponding input of the safety apparatus, said OSSD output being powerable to a maximum threshold value and to a minimum threshold value of the supply voltage suitable for determining respectively the ON and OFF conditions of said at least one output, a control circuit suitable for carrying out a test of the operation of said at least one OSSD output by sending test micropulses for switching said output terminal to said minimum threshold value to send an error signal to the safety in case of detection of a value different from said minimum threshold value, said control circuit being adapted to generate test micropulses having variable or adjustable duration.
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