Siemens SINAMICS S150 - Page 292

Acceptance test and acceptance report
10.5 Acceptance tests
Safety Integrated
292 Function Manual, 05/2010, A5E03264275A
Trace evaluation:
● SLS function with SLS level 2 is active (see bits "deselection SLS", "selection SLS bit 0",
"selection SLS bit 1" and "SLS active", "active SLS level bit 0" and "active SLS level
bit 1")
● 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 D (corresponds to selection SOS) is initiated (see bit "STOP D
active")
● Only after the delay time between selection and activation SOS (p9551/p9351) has
expired is the standstill position safely monitored (time axis 100 ms; see bit "SOS active")
● But as the axis continues to turn, the standstill tolerance window is violated (time axis
approx. 120 ms)
● 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
point the speed falls below the shutdown speed SS1 (p9560/p9360) (drops below the
shutdown speed SS1 before SS1 timer p9556/p9356 has expired).
Note
Minor 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.