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What would cause the ATV 630 or ATV930 drive to show SCF1 when you open the STO safe torque off inputs?

Issue:
What would cause the ATV630 or ATV930 drive to show SCF1 when you open the STO safe torque off inputs?

Product Line:
ATV630 and ATV930 drive

Environment:
All 

Cause:
Firmware issue triggering the SCF1 fault 

Resolution:
The Drives MCB main control board firmware needs to be updated.
ATV630 firmware needs to be version 1.6IE15 or higher
ATV930 firmware needs to be version 1.3IE04 or higher
 
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