Leuze electronic MSI-MD-FBX, Original Operating Instructions, Page: 6 / 47

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Leuze electronic MSI-MD-FBX 6
Tab. 1.3: Terms and abbreviations
AOPD Active Optoelectronic Protective Device
( A ctive O ptoelectronic P rotective D evice)
Blanking Deactivation of the protective function of individual beams or beam areas with
monitoring for interruption
CS Switching signal from a control or a machine interface
( C ontroller S ignal)
EDM Contactor monitoring
( E xternal D evice M onitoring)
FG Function group
( F unction G roup)
LED LED, display element in transmitter and receiver
MS1, MS2 Muting sensor 1, 2
MTTF
d
Mean time to dangerous failure
( M ean T ime T o dangerous F ailure)
Muting Temporary automatic suppression of the safety functions
OSSD Safety-related switching output
( O utput S ignal S witching D evice)
PFH
d
Probability of a dangerous failure per hour
( P robability of dangerous F ailure per H our)
PL P erformance L evel
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/ RES tart interlock)
Scan Consecutive scans of the protective field from the first to the last beam
Safety sensor System consisting of transmitter and receiver
SIL S afety I ntegrity L evel
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)