On Altivar 320 can you use one 24v dc supply (internal or external) for multiple drives to the STO terminal?

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Issue:
ATV320: Can you use one 24v dc supply for multiple drives to the STO terminal?

Product Line:
ATV

Environment:
All

Cause:
Wiring

Resolution:
No, to avoid nuisance tripping, you have to have a solid 24v dc to each STO terminal so it is not recommended to use 1- 24v supply to multiple drives.