Parameters And Fault Tracing - Vacon 20 X Installation, Technical And Maintenance Manual

Safe Torque Off
9.7

Parameters and fault tracing

There are no parameters for the STO function itself.
Before testing the STO function, make sure that the checklist (Table 45) is inspected
and completed.
When STO function activates, 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.
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).
Service support: find your nearest Vacon service center at www.vacon.com
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