Siemens Sinamics G120 Function Manual page 255

Selecting SLS at low motor speeds
If the motor speed when selecting SLS is less than the SLS limit, then the drive responds as
follows:
The inverter monitors the speed after the "delay
time for the braking ramp".
Deselect SLS
If the higher-level controller deselects SLS, then the inverter deactivates limiting and
monitoring.
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
With braking ramp monitoring
6.6 Safely Limited Speed (SLS)
Without braking ramp monitoring
The inverter monitors the load speed after an ad‐
justable delay time has expired.
Operation
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