Siemens SINAMICS G120 Function Manual page 175

Selecting STO when the motor is rotating
Function
1. The higher-level control selects the STO function.
2. The inverter closes the brake without taking the current speed into consideration.
Before you can switch on the motor again, you must deselect the STO function.
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
Figure 6-12 The motor holding brake closes after selecting STO
Operation
6.4 Safe Brake Control (SBC)
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