Siemens Sinamics G120 Function Manual page 429

The risk assessment involves the following:
● Risk analysis
– Determines the limits of the machine (EN ISO 12100)
– Identification of hazards (EN ISO 12100)
– Estimating the level of risk (EN 1050 Paragraph 7)
● Risk evaluation
As part of the iterative process to achieve the required level of safety, a risk assessment is
carried out after the risk estimation. A decision must be made here as to whether the residual
risk needs to be reduced. If the risk is to be further reduced, suitable protective measures must
be selected and applied. The risk assessment must then be repeated.
Figure A-17
Risks must be reduced by designing and implementing the machine accordingly (e.g. by means
of controllers or protective measures suitable for the safety-related functions).
If the protective measures involve the use of interlocking or control functions, these must be
designed according to EN ISO 13849-1. For electrical and electronic control systems,
EN 62061 can be applied instead of EN ISO 13849-1. Electronic controllers and bus systems
must also comply with IEC 61508.
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
Iterative process for achieving safety
A.4 Standards and specifications
Appendix
429