Siemens Sinamics G110M Operating Instructions Manual page 194

Advanced commissioning
6.13 Safe Torque Off (STO) safety function
Table 6- 23
1. The inverter recognizes the selection of STO
2. The inverter interrupts the energy supply to the
3. The inverter signals that "STO is active" via a
Figure 6-25
If the motor is still rotating (B) when STO is selected, then it coasts down to standstill.
The STO safety function is standardized
The STO function is defined in IEC/EN 61800-5-2:
"[...] [The inverter] does not supply any energy to the motor which can generate a torque (or
for a linear motor, a force)."
⇒ The STO inverter function is in conformance to IEC/EN 61800-5-2.
194
The principle of operation of STO
Safe Torque Off (STO)
via a safety-relevant input or via the PROFIsafe
safe communication.
motor.
safety-relevant output or via the PROFIsafe
safe communication.
Functionality of STO when the motor is at standstill (A) and rotating (B)
Standard inverter functions linked with STO
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If you use a motor holding brake, the inverter
closes the brake.
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Distributed converter for SIMOGEAR geared motors
Operating Instructions, 09/2017, FW V4.7.9, A5E31298649B AH