Is there a relationship between PL and SIL?
With the use of PFH (Probability of Dangerous Failure per Hour) value you can build a relation between PL (Performance Level) and SIL (Safety Integrity Level). See page Safety.
Kollmorgen Support Network
With the use of PFH (Probability of Dangerous Failure per Hour) value you can build a relation between PL (Performance Level) and SIL (Safety Integrity Level). See page Safety.