I. Interpretation of Complete Model Segments ANB10D – 445 / CU2T / NDEL
ANB10D: Product Base Type – ESB Bus Expansion Backplane (Specialized for Yokogawa Centum VP DCS System)
445: Slot Specification Code: 4 I/O Card Slots + 4 Power/Communication Reserved Slots, Total 8 Slot Backplane
CU2T: Bus Redundancy Configuration Identifier
CU = ESB Bus Interface; 2 = Dual Redundant ESB Bus; T = Terminal-Type Wiring
NDEL: No Explosion-proof Safety Isolation, Standard General Industrial Version (DEL represents explosion-proof type)
Product Positioning
ESB Expansion Rack Backplane for Centum VP DCS System, as the base plate for local control station / remote I/O expansion station, carrying various AI/DI/AO/DO/communication cards, communicating with the main control FIO unit through dual redundant ESB buses, the mainstream DCS rack base for chemical, petrochemical, and power plants.
Hardware Core Specifications
Slot Layout (445 Version)
4 General I/O Card Slots (FIO Modules: AAI543, ADV151, ADV551, AFV30D, etc.)
Equipped with 2 redundant ESB Bus Interface Slots, supporting hot standby of dual CU modules
Bus Architecture
ESB Bus (Extended System Bus), dual redundant CU2T bus channels, single-channel failure does not interrupt communication, supports online hot-plug of cards
Power Supply
External DC24V centralized power supply for the rack, built-in power distribution circuitry in the backplane, each card slot has independent fuse and current limiting
Installation
Standard 19-inch cabinet embedded rack installation, Yokogawa standard FIO expansion chassis base
Environmental parameters
Operating temperature: 0℃ ~ +50℃; humidity 5%~90% without condensation; industrial EMC anti-interference, compliant with ISA G3 anti-corrosion grade
CU2T Redundant Bus Function
Dual independent ESB bus physical links, automatic primary-standby switching
Real-time diagnosis of bus disconnection and short circuit faults, upload system alarms
Support for long-distance expansion of I/O racks, reducing wiring volume of the central control cabinet
Compatible with Yokogawa AFV30D ESB communication main card for use
Commonly used FIO cards (compatible with this backplane)
AAI543-H00: 4-channel analog input card
ADV151-P00: 16-channel digital input card
ADV551-P00: 16-channel digital output card
AAI843: multi-point thermocouple / RTD temperature acquisition card
AFV30D-A41452: ESB bus communication interface card (with ANB10D as a set)
Comparison of Model Suffixes Table
Model suffix Configuration difference
ANB10D-445/CU2T/NDEL 4 I/O slots + dual redundant ESB, standard non-explosion-proof (common model)
ANB10D-445/CU1T/NDEL One-channel ESB bus, without redundancy
ANB10D-445/CU2T/DEL Explosion-proof safe isolation backplane, dedicated for chemical explosion-proof areas
ANB10D-845 8 I/O card slots large-capacity backplane
Typical application scenarios
Petroleum refining and chemical industry Centum VP DCS remote I/O expansion rack
Thermal power plant, water treatment plant process control station base
Fine chemical, pharmaceutical automation system FIO expansion cabinet
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