The following DeltaV Series 2 I/O cards support redundancy. Follow the Related information links for specifications and wiring diagrams.
AI, 4-20 mA with HART
AO, 4-20 mA with HART
DI, 8-Channel, 24 VDC, Dry Contact
DO, 8-Channel, 24 VDC, High-Side
Fieldbus H1
Series 2 Profibus DP
Serial
Refer to the related information links for information about S-series redundant I/O.
Series 2, redundant capable cards are configured, auto-sensed, upgraded, and operated just like the Series 1 cards. Series 2 simplex cards can function as drop-in replacements for Series 1 simplex cards of the same type. With the exception of the Series 2 simplex H1 card, which requires the Series 2 H1 terminal block, no wiring change is required to replace a Series 1 card. Series 2 cards report their operating mode (simplex or redundant) to the DeltaV controller based on the type of terminal block on which they are installed. New redundant terminal blocks provide wiring terminations for the redundant cards. If a card is installed on a redundant terminal block, it reports itself as operating in redundant mode; otherwise, it reports itself as operating in simplex mode. If all cards are redundant, the controller can support up to 32 redundant pairs.
The Example switchover situations topic illustrates some scenarios intended to help you to know when a switchover has occurred and to diagnose and solve the problems that caused the switchover.