21.2 Glossary
Abbreviaon 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 O Stop 0
ON − status Signal status of the safety sensor in normal operaon
FIT Failure In Time, 1 FIT = 10-9 Error/h
FMEA Failure Mode and Eect Analysis
FSoE Fail Safe over EtherCAT, Safety over EtherCAT
GSDML Device descripon le with PROFINET-specic data for integrang the conguraon soware of a
PR
OFINET controller.
HFT Hardware Failure Tolerance
Cat. Category in accordance with EN ISO 13849-1
OSSD Output Signal Switching Device, tested signal output
PELV Protecve 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 modulaon
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 Fracon
SIL Safety Integrity Level in accordance with IEC 61508
Appendix
Glossar
y
471
To Next Page
Loading...
Need help?
General
