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Leuze electronic MLC 530 7
1.2 Checklists
The checklists (see chapter 9) serve as a reference for the machine manufacturer or supplier. They
replace neither testing of the complete machine or system prior to the initial start-up nor their periodic
testing by a competent person. The checklists contain minimum testing requirements. Depending on the
application, other tests may be necessary.
PFH
d
Probability of a dangerous Failure per Hour
Probability of dangerous Failure per Hour
PL Performance Level
Reduced resolution Reduction of the detection capability of the protective field without monitoring
for tolerating small objects in the protective field
RES Start/restart interlock
(Start/REStart interlock)
Scan Consecutive scans of the protective field from the first to the last beam
Safety sensor System consisting of transmitter and receiver
SIL Safety Integrity Level
State ON: device intact, OSSD switched on
OFF: device intact, OSSD switched off
Locking: device, connection or control / operation faulty, OSSD switched off
(lock-out)
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