About this document
Leuze electronic
MLC 520 EX
5
1
About this document
1.1
Used symbols and signal words
Table 1.1:
Warning symbols and signal words
Table 1.2:
Other symbols
Table 1.3:
Terms and abbreviations
Symbol indicating dangers to persons
NOTICE
Signal word for property damage
Indicates dangers that may result in property damage if the measures for dan
-
ger avoidance are not followed.
CAUTION
Signal word for minor injury
Indicates dangers that may result in minor injury if the measures for danger
avoidance are not followed.
WARNING
Signal word for serious injury
Indicates dangers that may result in severe or fatal injury if the measures for
danger avoidance are not followed.
DANGER
Signal word for life-threatening danger
Indicates dangers with which serious or fatal injury is imminent if the measures
for danger avoidance are not followed.
Symbol for tips
Text passages with this symbol provide you with further information.
Symbols for action steps
Text passages with this symbol instruct you to perform actions.
AOPD
Active Optoelectronic Protective Device
EDM
Contactor monitoring
(External Device Monitoring)
LED
LED, display element in transmitter and receiver
MLC
Brief description of the safety sensor, consisting of transmitter and receiver
MTTF
d
Mean Time To dangerous Failure
OSSD
Safety-related switching output
(Output Signal Switching Device)
PFH
d
Probability of dangerous Failure per Hour
PL
Performance Level
RES
Start/REStart interlock
Scan
Consecutive scans of the protective field from the first to the last beam
