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Performance Level
Required performance
level PLr
Risk assessment
Safety Function
Mobile Robot LD-250 Assembly Instructions, Rev. A
Discrete level used to specify the ability of safety-related parts
of control systems to perform a safety function under
foreseeable conditions
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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