
Safety engineering
Basics
Terms and abbreviations of the safety engineering
6
EDS94AYAF EN 1.0
1.1.3
Terms and abbreviations of the safety engineering
Abbreviation
Meaning
9400
Lenze servo controller
Cat.
Category according to EN ISO 13849−1 (formerly EN 954−1)
OSSD
Output Signal Switching Device, tested signal output
PS
PROFIsafe
PWM
Pulse width modulation
SD−In
Safe input (Safe Digital Input)
SD−Out
Safe output (Safe Digital Output)
SIL
Safety Integrity Level according to IEC 61508
SM
Safety module
Optocoupler
supply
Optocoupler supply for the driver control
PELV
Protective extra low voltage
SELV
Safety extra low voltage
OFF state
Signal status of the safety sensor technology when it is released or responding
ON state
Signal status of the safety sensor technology in normal operation
PM
PN−switched signal paths
PP
PP−switched signal paths
GSE
File containing device−specific data to establish PROFIBUS communication
GSDML
File containing device−specific data to establish PROFINET communication
S−Bus
Safety bus
Abbreviation
Safety function
SLS
Safely limited speed
SLI
Safely limited increment
SOS
Safe operating stop
SS1
Safe stop 1
SS2
Safe stop 2
STO
Safe torque off
Formerly: safe standstill
SMS
Safe maximum speed
SDI
Safe direction
SSE
Safe stop emergency
ES
Safe enable switch
OMS
Operation mode selector
AIE
Error acknowledgement (Acknowledge In Error)
AIS
Restart acknowledgement (Acknowledge In Stop)
SLP
Safely Limited Position
SCA
Safe Cam
PDSS
Position−dependent Safe Speed
FSoE
Fail Safe over EtherCAT
RMS
Repair Mode Select