Siemens SINAMICS G120 Function Manual page 211

When switching off, the speed is higher than the SSM limit value
The inverter brakes the motor down to a standstill using the OFF1 or OFF3 command and
then switches it off.
If the "SSM active" feedback signal should remain active when the pulses are inhibited, then
the inverter safely switches off the motor torque using the safety function STO.
Figure 6-35
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
OFF1 command when the SSM safety function is active
Operation
6.7 Safe Speed Monitor (SSM)
211