Siemens SINAMICS S120 Function Manual page 78

Safety Integrated Extended Functions
5.6 Safely-Limited Speed (SLS)
reference
frequency
standstill
detection
Monitoring ramp down time
STO selected
STO active
SS1 selected
SS1 active
SS1 active
Power removed
Figure 5-6 Signal profile for encoderless SLS
SBR delay = p9582
In this example, "set point frequency" represents the higher SLS speed 2 and "standstill
detection" represents the lower SLS speed 1.
78
Selection of SS1-ramp:
user action:
- set SS1 signal
Activation of SS1-ramp:
user action:
- none
envelope
(monitoring ramp)
OFF3 ramping
SBR delay
Deselection of SS1-ramp:
Activation of STO:
user action:
user action:
- clear SS1 signal
- none
STO
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Starting drive:
user action:
- set OFF1/ON signal
set point
frequency
stator
frequency
rotor
frequency
time
Safety Integrated