Appendix
A.4 Acceptance tests for the safety functions
SIMATIC ET 200pro FC-2 converter
268
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
A.4.2
STO acceptance test (ET 200pro FC-2)
Figure A-7 Acceptance test for STO (basic functions)
Procedure
Status
1.
The inverter is ready
•
The inverter signals neither faults nor alarms of the safety functions
(r0945[0…7], r2122[0…7]).
•
STO is not active (r9773.1 = 0).
2.
Switch on motor
2.1.
Enter a speed setpoint
≠
0.
2.2.
Switch on the motor (ON command).
2.3.
Check that the correct motor is running.
3.
Select STO
3.1.
Select STO while the motor is running
3.2.
Check the following:
•
The inverter signals the following:
"STO Selection via F0 rail" (r9772.17 = 1)
•
If a mechanical brake is not available, the motor coasts
down.
A mechanical brake brakes the motor and holds it to en-
sure that it remains at a standstill.
