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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. 386: Typical safety loop with AC500-S safety PLC
For the calculation of the PFH/PFD values of an exemplary safety system, 15 % is normally assumed for the safety PLC.