23180-000 Rev A Mobile Robot LD, LD-CT Assembly Instructions 9
2 Abbreviations and terminology
Essential health and safety requirements relating to the design and
construction of machinery
Performance Level as per EN ISO 13849-1
Required Performance Level as per EN ISO 13849-1
Achieved Performance Level as per EN ISO 13849-1
Discrete level used to specify the ability of safety-related parts of control
systems to perform a safety function under foreseeable conditions
Required performance level
PLr
Performance level (PL) applied in order to achieve the required risk
reduction for each safety function
Overall process comprising risk analysis and risk evaluation
Function of the machine whose failure can result in an immediate
increase of the risk(s)
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