Series of articles: Product lifecycle management – but how!? (6)
With our product life cycle management publications, we would like to inform you about standards and regulations. Especially, we focus on SMEs to help them with functional safety issues.
Part 6 should help in mastering the progress from normative requirements to practical application. The article defines the typical requirements for factory automation: SIL3, requirement rate High Demand.
System FMEA in a safety project
The development of functionally safe components poses additional challenges for the developer. Unlike standard product developments, this puts forth normative requirements, which further increases the complexity of product development. These include architectural requirements of IEC 61508-2.
Depending on the safety integrity level to be achieved, this standard sets concrete specifications as regards the hardware fault tolerance (HFT) and safe failure fraction (SFF) to be achieved. In addition to failsafe design principles, diagnostic measures of keys contribute to a high SFF.
Article issued in SPS Magazine