Terms and abbreviations used in drive-based safety, 2introduction – Lenze E94AYAE SM301 User Manual
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2
Introduction
2.1
Terms and abbreviations used in drive-based safety
10
Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
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2.1
Terms and abbreviations used in drive-based safety
Abbreviation
Meaning
9400
Lenze servo controller
EC_STO
Error class stop 0
EC_SS1
Error class stop 1
EC_SS2
Error class stop 2
EC_FS
Error class fail-safe
Cat.
Category in accordance with 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 in accordance with IEC 61508
SM
Safety module
Optocoupler supply
Supply of optocouplers to control the power drivers
PELV
Protective Extra Low Voltage
SELV
Safety Extra Low Voltage
OFF state
Signal state of the sensors when they are activated or respond.
ON state
Signal state of the sensors in normal operation
PM
P/N switched signal paths
PP
P/P switched signal paths
GSD
File with device-specific data for establishing PROFIBUS communication
GSDML
File with device-specific data for establishing PROFINET communication.
AIS
Restart acknowledgement ("Acknowledge In Stop")
AIE
Error acknowledgement ("Acknowledge In Error")
Abbreviation
Safety function
SDI
Safe direction
SLI
Safely limited increment
SLS
Safely limited speed
SOS
Safe operating stop
SS1
Safe stop 1
SS2
Safe stop 2
SSM
Safe speed monitor
STO
Safe torque off
• Formerly: safe standstill
SMS
Safe maximum speed
SSE
Safe stop emergency
ES
Enable switch
OMS
Operation mode selector