Mô đun 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
Features
- Increases input/output
- Takes advantage of all smart device capabilities
- Facilitates multi-drop 16 devices on one port
- Secure uninterupted control
- Third-party device support
- Autosense of redundancy, automatic switchover
- Provides synchronized control
Specifications
| Number of channels | 2 |
| Number of field devices | 16 per port |
| Number of Ff function blocks | 96 per card |
| Isolation | Each channel is isolated from the system and from each other and factory tested to 1500 VDC |
| Nominal signal range | Fieldbus FOUNDATION IEC 61158-2 |
| Localbus current per card (12 VDC nominal) | 200 mA typical, 300 mA maximum |
| Field circuit power per card | 9 TO 32 VDC, 12 mA per channel |
| Standards | IEC 1158 data link layer |
| airborne contaminants | ISA-S71.04-1985 Airborne Contaminants Class G3 Conformal coating |
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.
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