PPCS Communication Fault on ACS2040-1L-AN1-a-0E
We had NVOS Fault on INU, the state of the INU was always showing : TC Not Ready too and ABB support told us to replace by new card the AMC-34 (INU) card and see if it fix the problem.
After the change of the card, nothing better.
So ABB support ask us to change the INT-2 (INU side) board as well with a new one.
We did the replacement and reconnected everything the same way it was.
After rebooting of the Drive, we get Fault : PPCS Communication.
We checked all the connections and we made sure that when disconnecting the little fiber connectors from the cards/boards, we didn't touch the fiber nor any dirt was introduce on them or into them.
Can someone suggest some solution(s) to fix this issue.
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