Siemens Sinamics S110 Function Manual page 508

Safety Integrated Functions
8.9 Acceptance test and acceptance report
Trace evaluation:
● SLS function with SLS level 2 is active (see bits "deselection SLS", "selection SLS bit 0",
● Drive is accelerated beyond the SLS limit (time axis from approx. -400 ms)
● Exceeding of the limit is recognized (time axis 0 ms)
● Safety fault is initiated (time axis 0 ms; bit "internal event" is set to 0)
● Fault response STOP E (corresponds to selection SOS) is initiated (see bit "STOP E
● Only after the delay time between selection and activation SOS (p9551/p9351) has
● But as the axis continues to turn, the standstill tolerance window is violated (time axis
● STOP B is initiated (see bit "SS1 active")
● The drive is decelerated to a standstill
● Standstill is reached (time axis approx. 500 ms)
● STOP A (as follow-up response to STOP B) is activated (see bit "STO active"); at this
Note
Small time differences (of the order of 2 to 3 Safety clock cycles (here up to 36 ms)) are
caused by internal calculations and do not present a problem.
506
"selection SLS bit 1" and "SLS active", "active SLS level bit 0" and "active SLS level
bit 1")
active")
expired is the standstill position safely monitored (time axis 100 ms; see bit "SOS active")
approx. 120 ms)
point the speed falls below the shutdown speed SS1 (p9560/p9360) (drops below the
shutdown speed SS1 before SS1 timer p9556/p9356 has expired).
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual