Standards For Implementing Safety-Related Controllers - Siemens SINAMICS S120 Function Manual

Standards and regulations
10.2 Safety of machinery in Europe
10.2.3

Standards for implementing safety-related controllers

If the functional safety of a machine depends on various control functions, the controller must
be implemented in such a way that the probability of safety functions failing in a dangerous
fashion is sufficiently minimized. The EN ISO 13849-1 and IEC61508 standards define
principles for implementing safety-related machine controllers which, when properly applied,
ensure that all the safety requirements of the EC Machinery Directive are fulfilled. These
standards ensure that the relevant safety requirements of the Machinery Directive are
fulfilled.
Figure 10-1
The application areas of EN ISO 13849-1, EN 62061, and EN 61508 are very similar. To
help users make an appropriate decision, the IEC and ISO associations have specified the
application areas of both standards in a joint table in the introduction to the standards.
EN ISO 13849-1 or EN 62061 should be applied depending on the technology (mechanics,
hydraulics, pneumatics, electrics, electronics, programmable electronics), risk classification
and architecture.
Further, Standard IEC 61800-5-2 is applicable for variable-speed electric drives with
integrated safety functions. IEC 61800-5-2 defines requirements and gives
recommendations for designing and developing, integrating and validating safety-related
applications regarding their functional safety. IEC 61800-5-2 is applicable for adjustable
speed electric power drive systems, which are handled in other parts of IEC 61800
standards.
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Standards for implementing safety-related controllers
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated