Safe Torque Off, Sto (Extended Safety) - Siemens SINAMICS G120 Function Manual

4.9.5.2

Safe Torque Off, STO (Extended Safety)

Table 4- 9 "Safe Torque Off" (STO) function
No.
1. Initial state
The inverter is in the "Ready" state (p0010 = 0).
The inverter signals neither faults nor alarms of the safety functions (r0945, r2122, r2132).
STO is not active.
2. Switch on the motor (ON command).
3. Ensure that the correct motor is running.
4. Select STO while the motor is running.
Note: Test each configured activation, e.g. via digital inputs and PROFIsafe.
5. Check the following:
If a mechanical brake is not available, the motor coasts down.
•
A mechanical brake brakes the motor and holds it to ensure that it remains at a standstill.
The inverter signals neither faults nor alarms of the safety functions.
•
The inverter signals:
•
"STO is selected" (r9720.0 = 0)
"STO is active" (r9722.0 = 1)
6. Deselect STO.
7. Check the following:
The inverter signals neither faults nor alarms of the safety functions.
•
The inverter signals:
•
"STO is not selected" (r9720.0 = 1)
"STO is not active" (r9722.0 = 0)
The inverter is in "Closing lockout" state (p0046.0 = 1).
•
8. Switch the motor off (OFF1 command) and then on again (ON command).
9. Ensure that the correct motor is running.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB
4.9 Acceptance test - Completion of commissioning
Description
Commissioning
Status
171