Siemens Sinamics S120 Function Manual page 434

Appendix
A.3 Acceptance tests (recommendations)
Trace evaluation:
● SOS function is activated (see bits "deselect SOS" and "SOS active")
● The drive starts moving (time axis approx. -100 ms)
● Exiting the SOS tolerance window is recognized (time axis approx. 0 ms)
● Safety fault is initiated (time axis approx. 0 ms; bit "internal event" is set to 0)
● Fault response STOP B is initiated (see bit "STOP A or B active" and "SS1 active")
● The drive is braked to a standstill
● Standstill is reached (time axis approx. 200 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) before the SS1 timer
(p9556) has expired (drops below the shutdown speed SS1 before SS1 timer (p9556)
has expired)
Not e
Time differences through internal c alculations
Small time differences (of the order of two to three safety cycles (here up to 36 ms)) are
caused by internal calculations and do not present a problem.
434
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated