Omron LD

23180-000 Rev A Mobile Robot LD, LD-CT Assembly Instructions 9
2 Abbreviations and terminology
Abbreviation / term
Description
EHSR
Essential health and safety requirements relating to the design and
construction of machinery
LD
Low-duty
PL
Performance Level as per EN ISO 13849-1
PL
r
Required Performance Level as per EN ISO 13849-1
PL
a
Achieved Performance Level as per EN ISO 13849-1
Performance Level
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
Risk assessment
Overall process comprising risk analysis and risk evaluation
Safety Function
Function of the machine whose failure can result in an immediate
increase of the risk(s)