Issue:
Connecting DC voltage power supply to the DC bus on the ATV6xx/ATV9xx Process drives.

Product Line:
ATV600 / ATV900 Process drives

Environment:
All models, All serial numbers

Cause:
Information not available in current literature.

Resolution:
It is possible to connect the proper DC voltage directly to the DC bus of the ATV900 Process drives.  A precharge circuit is required.
The ATV600 Process drives are NOT designed for a direct DC bus connection.

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