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1.1
Used symbols and signal words
Table 1.1:
NOTICE
CAUTION
WARNING
DANGER
Table 1.2:
Table 1.3:
AOPD
EDM
OSSD
RES
PFH
D
MTTF
d
PL
1.2
Checklists
The checklists (see chapter 8 "Testing") 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.
Leuze electronic
Warning symbols and signal words
Symbol indicating dangers to persons
Signal word for property damage
Indicates dangers that may result in property damage if the measures for danger
avoidance are not followed.
Signal word for minor injury
Indicates dangers that may result in minor injury if the measures for danger avoid-
ance are not followed.
Signal word for serious injury
Indicates dangers that may result in severe or fatal injury if the measures for danger
avoidance are not followed.
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.
Other symbols
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.
Terms and abbreviations
Active Optoelectronic Protective Device
External Device Monitoring
Output Signal Switching Device
Start/REStart interlock
Probability of dangerous Failure per Hour
Mean Time To dangerous Failure
Performance Level
ML2R-SR4
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