Siemens SINAMICS S120 Function Manual page 590

Safety Integrated basic functions
10.3 Safety instructions
Parameterized safety functions when an internal or external fault occurs only available to a
limited extent
If an internal or external fault occurs, none or only some of the parameterized safety
functions are available during the STOP F response triggered by the fault. This must be
taken into account when a delay time between STOP F and STOP B is parameterized. This
applies in particular to vertical axes.
590
WARNING
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions