Siemens SINUMERIK Series Function Manual page 39

For SLS, as monitoring function only SAM (Safe Acceleration Monitor) is available.
● Without brake ramp monitoring:
The inverter monitors the load velocity after the "delay time for SLS changeover" has
expired.
Advantage: Commissioning is simplified, as instead of subfunction SAM of the alternative
brake ramp monitoring, you only have to set the delay time.
● Select SLS for low velocities
If the motor velocity when selecting SLS is less than the SLSlimit, then the drive responds
as follows:
The inverter monitors the velocity without any delay time.
● Deselect SLS
If the higher-level control deselects SLS , then the inverter deactivates limiting and
monitoring.
Safety Integrated
Function Manual, 10/2015, 6FC5397-3EP40-5BA3
Overview of Safety Integrated functions
2.3 Safety Integrated Extended Functions
39