Controller Redundancy

Installing a Redundant Controller

Note

A simplex controller cannot be made redundant by using the following steps after VCAT is enabled.

  1. Assign an appropriate redundancy license to the simplex controller you want to make redundant in DeltaV Explorer.
  2. Plug in a second 2-wide carrier to the left of the current 2-wide carrier. Ensure that it has the correct pins and supports redundancy.
  3. Insert the appropriate power supply in the left slot of the left 2-wide carrier and plug in the power cord to supply power.
  4. Insert a controller (the controller type should match what is already in the right 2-wide carrier) into the right slot of the left 2-wide carrier.
  5. The added controller's Power LED should turn on and the Error LED should blink for a few seconds. Then, all 6 of the LEDs should turn on for about 2 seconds, followed by the LEDs turning off except for the Power LED, which should always remain on. At this point, the Standby LED and the two communications LEDs should start to blink (Standby Controller becomes commissioned). Observe that the LEDs behave as described; the LEDs are the controller's tell-tales.
  6. Download the ProfessionalPLUS workstation in DeltaV Explorer.
  7. Download the setup data to the controller. The two communications LEDs should continue to blink for a few minutes and the Standby LED should turn on solid (Standby Controller becomes configured). The Standby Controller is now ready to take over if the Active Controller fails.