Siemens Sinamics S120 Function Manual page 470

Appendix
A.3 Acceptance tests (recommendations)
● However, as the axis continues to rotate, the standstill tolerance window is violated (time
axis approx. 800 ms)
● STOP B is initiated (see bit "SS1 active")
● The drive is braked to a standstill
● Standstill is reached (time axis approx. 850 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) (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 6 ms)) are
caused by internal calculations and do not present a problem.
470
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated