9
vacon • 112
Safe Torque Off
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
9.7
Parameters and fault tracing
There are no parameters for the STO function itself.
To re-enable motor operation, after the STO state, it is necessary to perform the following steps:
•
Release the switch or the external device (“F30” is displayed even after this has been
released).
•
Reset the fault (through a digital input or from the keypad).
•
It is possible that a new start command is required for the restart (depending on the applica-
tion and your parameter settings).
Before testing the STO function, make sure that the checklist (Table 49) is inspected
and completed.
When STO function is demanded, the drive always generates a fault (“F30”) and the
motor stops by coasting.
In the application the STO state can be indicated using a digital output.
