dl-breadcrumbs__homedl-breadcrumb-item__separatorAC500-S safety PLCdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorSafety user manual V1.3.2dl-breadcrumb-item__separatorOverview of AC500-S safety PLCdl-breadcrumb-item__separatorSafety loop
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Safety loop

This is the web edition of the original ‎⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements.

The safety loop, to which the AC500-S safety PLC belongs, consists of the following three parts: sensors, safety PLC and actuators.

Fig. 398: Typical safety loop with AC500-S safety PLC
02.03.007_Safety loop AC500-S

For the calculation of the PFH/PFD values of an exemplary safety system, 15 % is normally assumed for the safety PLC.