Safe Torque Off, Sto - Siemens SINAMICS G120 Function Manual

Description

2.3 Safe Torque Off, STO

2.3 Safe Torque Off, STO
STO functions as follows:
● As soon as the machine control selects the STO safety function via a fail-safe input or via
● To switch the motor on again, you have to first deselect STO and then enter an ON
Diagnostics
Bit r9773.1 and bit 0 in the PROFIsafe status word 0 indicate the status of the motor.
Further information
The behavior of the motor when several safety functions are simultaneously selected is
described in Section: Interaction of the safety functions (Page 56).
The behavior of the inverter when an internal fault is detected or in the event of a
discrepancy at a fail-safe digital input can be found in Section: Response of Safe Torque Off
(STO) to faults (Page 194).
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PROFIsafe safety-relevant communication, the inverter safely switches off the motor
torque.
command again.
Figure 2-2 Dynamic response of STO (Safe Torque Off)
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB