DeltaV Series 2 Redundant I/O > Example switchover situations

Communication failure due to open or bent pin

Some of the pins that connect the card to the carrier can become bent or broken during installation or through improper handling. An open or bent pin shorts to the adjacent pin and causes the redundant cards to stop communicating and a switchover to occur. To correct this issue:

  1. Remove the redundant cards and check for bent or broken pins.
  2. Straighten any bent pins and re-insert the card into its slot on the carrier. Replace the card if a pin is broken or bent beyond repair.
  3. Open DeltaV Diagnostics (click Start → DeltaV Operator → Diagnostics).
  4. For each card, right-click the card, and then select Clear Saved Fault Information.