The system FMEA in the safety project
The development of functionally safe components presents the developer with additional challenges. In contrast to standard product developments, normative requirements arise that further increase the complexity of product development. These include, for example, the architecture requirements of IEC 61508-2.
Depending on the safety integrity level to be achieved, this standard makes concrete specifications regarding the hardware fault tolerance (HFT) to be achieved as well as the proportion of safe faults (SFF). In addition to fail-safe design principles, diagnostic measures are the key to a high SFF.
Article published in SPS Magazine