4 Configuration and Project Engineering 
4.3 Safe Torque Off (STO) 
 
SINAMICS G120 as a Speed Axis on the S7-1500 
V1.0a, Entry ID: 78788716 
 
Copyright  Siemens AG 2013 All rights reserved 
No.  Action  Picture 
5.    Test stop 
On demand you can 
interconnect... 
1.  the time for the test stops. 
2.  the “Test of the shutdown 
paths required” output. 
However, this is not 
necessary in this application. 
 
6.    F-DI configuration 
If necessary, you can change 
the constants for discrepancy 
time and input filter for the 
fail-safe input. 
However, this is not 
necessary in this application. 
 
7.    Exit the safety commissioning 
mode by pressing the     
button.  
8.    Save the changed safety 
parameters in ROM.