Function Test - Siemens SINAMICS G120 Operating Instructions Manual

Functions
8.10 Fail-safe function Safe Torque Off (STO)
8.10.8.5

Function test

Table 8- 42 "Safe Torque Off" (STO) function
No.
1. Initial state:
The inverter is in "Ready" state (p0010 = 0).
•
The inverter indicates neither faults nor alarms for 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 indicates neither faults nor alarms for safety functions.
•
The inverter indicates:
•
"STO is selected" (r9773.0 = 1).
"STO is active" (r9773.1 = 1).
6. Deselect STO.
7. Check the following:
The inverter indicates neither faults nor alarms for safety functions.
•
The inverter indicates:
•
"STO is not selected" (r9773.0 = 0).
"STO is not active" (r9773.1 = 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.
244
Description
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
Status
SINAMICS G120C Inverter