Notification 676 – VOmain out of stack

CATEGORY

ISSUE / RESULT

FIX / REFERENCE(S)

Error

Main Output is configured as floating.  The Main output in an AC stack is used to derive signal to the FW pin of the controller.  Therefore, it must be referenced to the common return (or the GND pin of the controller) and cannot be configured as floating.

In the Specifications-Outputs dialogue, configure the Main Output as Common RTN. Also note that:  a)  the main output in an AC stack is the one with the lowest output voltage; b)  if there is an SR in the stack, it must be in the Main Output.  The Main output is used as an output regulation point and cannot be floating.

In the Outputs Menu, change the Main Output to the lowest voltage one in the stack and repeat the operation.