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Carrier manual reset button5/26/2023 You will need to perform an FMEA on your design to determine all of the various failure modes and then limit the list to those failure modes that are dangerous failures. The definition of “safety function” is found in :įunction of the machine whose failure can result in an immediate increase of the risk(s) This post should help to clear up the confusion.įor more information on conducting ISO 13849 analyses, see our series on How to do a 13849-1 Analysis or Interlock Architectures - Part 1: What do those categories really mean? What is a safety function?įor the requirements for a manual reset to be considered a safety function, you must first determine if your manual reset function meets the definition of a safety function. One of the most poorly understood is the manual reset function. ISO 13849-1:2015 describes some of the more common safety functions. Safety functions are defined in safety requirement specifications. A safety function is needed to reduce the risk when the control system is called upon. Following the risk assessment, risk reduction is the next step.
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