DeltaV Series 2 Redundant I/O > Example switchover situations

Open pin fault on Series 2 redundant H1 card

Some of the pins that connect Series 2 redundant H1 cards to the terminal block can bend or break during installation or through improper handling and cause an open pin fault. An open pin can cause problems on one or both of the ports. To correct this issue:

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