What information about safety-related components has to be documented by the machine manufacturer?
When designing safety-related components of a control system, the manufacturer must document at least the following information in compliance with DIN EN ISO 13849-1:2007: Safety functions provided by the safety-related components of a control system; Properties of each safety function; Exact points at which the safety-related components begin and end; Ambient conditions; Performance Level (PL); Selected category; Parameters relating to reliability (MTTF, DC, CCF and usage period); Measures against systematic faults; Technology used; All safety-related faults taken into account; Reasons for fault exclusions; Reasons for design (e.g. faults considered, excluded faults); Software documentation; Measures against reasonably foreseeable misuse. In general, this documentation is intended for internal use by the manufacturer and is not passed on to the machine user. By contrast, the user must be provided with the information that is important for safe use of the safety-related components of a
