ABB FSO-21 - Page 467

Verification and validation 467
• STO.14 Time to zero speed with STO and modoff. (This is the estimated time
in which the motor coasts to a stop from the maximum process speed.)
• If with safety encoder: FSOGEN.52 Zero speed with encoder.
Indication:
• STO.21 STO output
• STO.22 STO completed output
• FSOGEN.11 Stop completed output
4. If you made any changes, download and validate the configuration with the Drive
composer pro PC tool.
5. Make sure that you can run and stop the motor freely.
6. Activate the STO function. For example, by pressing an emergency stop button,
which is wired to an FSO input for the STO function request.
7. Remove the STO function request.
8. Make sure that the drive STO is activated immediately after the STO request.
9. Make sure that STO output (STO.21) shows the state of the drive STO correctly.
10. a) If manual acknowledgement (or safebus acknowledgement) is in use:
Verify by
trying to acknowledge the function, that it is not
possible before the motor speed
is low enough:
With safe speed estimation:
• Acknowledgement is not possible before coast time defined by parameter
STO.14 Time to zero speed with STO and modoff
• If fly start is allowed, acknowledgement is not possible before the time defined
by parameter STO.13 Restart delay after STO has elapsed.
With safety encoder:
• Acknowledgement is not possible before the speed is below safety zero speed
limit FSOGEN.52 Zero speed with encoder.
• If fly start is allowed, acknowledgement is not possible before the time defined
by parameter STO.13 Restart delay after STO has elapsed.
b) If automatic acknowledgement is in use:
Verify that STO function is not
acknowledged before the motor is in safe state. See the conditions above.