Siemens SINAMICS G130 Manual page 67

Selecting/deselecting "Safe Torque Off"
The following occurs when "Safe Torque Off" is selected:
● Each monitoring channel triggers safe pulse suppression via its switch-off signal path.
● A motor holding brake is applied (if connected and configured).
If "Safe Torque Off" is deselected, this is treated as an internal safe acknowledgment. The
following processes occur:
● Each monitoring channel cancels safe pulse suppression via its switch-off signal path.
● The safety prompt "Apply motor holding brake" is canceled.
● Any pending STOP F or STOP A commands are canceled (see r9772 / r9872).
● The cause of the fault must be remedied.
● The messages in the fault memory also need to be reset using the general
Restart after the "Safe Torque Off" function has been selected
1. Deselect the function in each monitoring channel via the input terminals.
2. Set drive enables.
3. Revoke "closing lockout" and switch the drive back on.
4. Run the drives again.
Status for "Safe Torque Off"
The status of the "Safe Torque Off" (STO) function is displayed via parameters r9772, r9872,
r9773, and r9774.
As an alternative, the status of the function can be displayed using the configurable
messages N01620 and N30620 (configured using p2118 and p2119).
Safety Integrated
Function Manual, 05/2010, A5E03264275A
acknowledgment mechanism.
Note
If "Safe Torque Off" is selected and de-selected through one channel within the time in
p9650/p9850, the pulses are suppressed without a message being output.
If you want a message to be displayed in this case, however, you have to reconfigure
N01620/N30620 via p2118 and p2119 as an alarm or fault.
– 1/0 pulse edge at input signal "ON/OFF1" (revoke "closing lockout")
– 0/1pulse edge at input signal "ON/OFF1" (switch on drive)
Safety Integrated Basic Functions
5.1 Safe Torque Off (STO)
67