21.2
Glossary
Abbreviation
Meaning
AIE
Acknowledge In Error, error acknowledgement
AIS
Acknowledge In Stop, restart acknowledgement
OFF state
Triggered signal status of the safety sensors
CCF
Common Cause Error (also β-value)
EC_FS
Error Class Fail Safe
EC_SS1
Error-Class Safe Stop 1
EC_SS2
Error-Class Safe Stop 2
EC_STO
Error-Class Safe Torque Off Stop 0
ON − status
Signal status of the safety sensor in normal operation
FIT
Failure In Time, 1 FIT = 10-9 Error/h
FMEA
Failure Mode and Effect Analysis
FSoE
Fail Safe over EtherCAT, Safety over EtherCAT
GSDML
Device description file with PROFINET-specific data for integrating the configuration software of a
PROFINET controller.
HFT
Hardware Failure Tolerance
Cat.
Category in accordance with EN ISO 13849-1
OSSD
Output Signal Switching Device, tested signal output
PELV
Protective Extra Low Voltage
PL
Performance Level (in accordance with ISO 13849)
PM
Plus−Minus − switched signal paths
PP
Plus−Plus − switched signal paths
PS
PROFIsafe
PWM
Pulse width modulation
SCS
Safe Crawling Speed
SD−In
Safe Digital Input, safe input
SD−Out
Safe Digital Output, safe output
SELV
Safety Extra Low Voltage
SFF
Safe Failure Fraction
SIL
Safety Integrity Level in accordance with IEC 61508
Appendix
Glossary
496
Содержание i950 Series
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