Deltav M Series Foundation Fieldbus I/O Power Interface Module 4-32 Channels Wireless Field Data Backhaul

DeltaV™ M-series Foundation Fieldbus I/O Redundant Power Supply Module

Communicating

Events All of the controllers in the DeltaV network send their respective SOE messages to a designated Event Chronicle where the messages are stored in the event journal along with all of the other alarms and events being collected on that workstation. Even though the Event Chronicle on any DeltaV workstation may be used to collect SOE messages, DeltaV only allows one Event Chronicle at a time to be designated as the SOE collection node. The SOE collection node is responsible for: „

Ensuring that the SOE messages are stored, „

Sending confirmation to the SOE input cards when a message has been successfully stored, and „

Communicating the SOE messages to other Event Chronicles throughout the DeltaV system.

A property of each Event Chronicle is used to define whether that particular workstation will serve as the SOE collection node.

Benefits of DeltaV Vertical I/O versus Horizontal I/O

Vertical I/O is easier to wire up than horizontal I/O because cables coming from the bottom of cabinets may be fanned out and terminated without multiple wire bends. This is in line with current practices of cables coming out of the bottom of cabinets, especially in locations with raised-floor rooms.

Vertical I/O may be retrofitted into existing 19-inch cabinets more efficiently. A full DeltaV controller node’s complement of I/O can physically fit into two existing cabinets (8 vertical I/O carriers with 64 card slots of I/O), and it is easier to stay under the 6-meter back plane limit for a node using vertical I/O carriers and cables for basic process control (BPCS) and safety instrumented systems (SIS) communications than when using horizontal I/O carriers.

Overall air-conditioned cabinet footprint can be reduced with vertical I/O, and it provides better thermal management and improved airflow in cabinets due to its orientation of cards. Since vertical I/O carriers may be stacked vertically in a cabinet, gravity helps keep them together and possible movement between carriers is less of a concern.