Issue:
ATV320 and ATV340 with an external 24V DC supply.

Product Line:
ATV320, Altivar 340.

Environment:
All

Cause:
External supply for ATV340, ATV32, ATV320.

Resolution:
You can use an external +24VDC source.
Will need to connect between 24V and COM.
All Com connections are interlinked together.

To supply ATV32 or ATV320 with external 24V supply, you have to connect ext 24V DC to P24 and COM terminals on ATV32/320.
Attached pdf refers to ATV32/ATV320 and shows several cases for better explanation.

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