Siemens SINAMICS G120 Function Manual page 54

Description
2.7 Safe Speed Monitor, SSM
If you switch off the motor with OFF2, the inverter immediately switches off the motor.
Depending on the selected setting, the inverter safely switches off the motor torque (STO).
Figure 2-27
You must proceed as follows in order to switch on the motor again after the SSM function
has been deselected:
● Deselect the SSM safety function.
● If you switched off the motor with one of the OFF2 or OFF3 commands, then deselect the
● Switch off the motor with the ON/OFF1 command and then switch on again.
52
OFF2 command when the SSM safety function is active
corresponding command.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB