Configured for dual-redundant ESB bus communication within CENTUM VP systems, the Yokogawa ANB10D-420/CU2N/NDEL (ANB10D ESB Bus Node Unit) provides direct physical/electrical execution. It serves as the physical interface connecting field I/O modules to the Field Control Unit (FCU), transmitting digital process signals across a dual-redundant 2 Mbps bus channel. The unit executes cyclic data updates to coordinate hardware states with the central system, maintaining deterministic communication loops.
The alphanumeric code for the ANB10D series details specific hardware and power supply configurations:
| Parameter | Specification |
|---|---|
| Model | ANB10D-420/CU2N/NDEL |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 10 kg |
| Shipping Weight | 12 kg |
| Dimensions | 483 mm x 221 mm x 214 mm |
| Operating Temp | 0 - 60 deg C (0 - 50 deg C with specific communication modules) |
| Humidity Range | 5 - 95% RH, non-condensing |
| Input Voltage | 220 - 240 V AC (range 187 - 264 V AC) |
| Frequency | 50/60 Hz (range 47 - 63 Hz) |
| Power Consumption | 230 VA / 120 W (maximum electrical consumption up to 200 VA / 5.5 A depending on setup) |
| I/O Module Capacity | Up to 8 modules |
| Data Transfer Rate | 2 Mbps per bus channel |
| Mounting | 19-inch rack mounting (M5 x 4 screws) |
The unit supports direct interface integration with Yokogawa CENTUM VP distributed control system architectures. It facilitates the distribution of process signals by managing 4-20 mA HART loop protocols across installed analog I/O modules, ensuring precise signal translation from field transmitters. Through integrated channel-to-channel isolation, the backplane design prevents electrical crosstalk and common-mode voltage surges between adjacent cards. Additionally, the communication interface supports FOUNDATION Fieldbus integration, maintaining cyclic, synchronized data updates aligned with configured system schedules.
Q: What is the exact failover time between the dual-redundant ESB bus channels?
A: The unit features a bumpless switchover mechanism that completes failover detection and path transition in less than 50 ms upon a channel disruption.
Q: Under what electrical conditions can I/O modules be hot-swapped within this node?
A: I/O modules can be hot-swapped under energized conditions, provided the system control network remains active and proper electrostatic discharge (ESD) procedures are followed.
Q: What is the mounting requirement and fastening specification for this unit?
A: The unit is designed for standard 19-inch rack mounting using four M5 screws and the supplied insulation bushings to isolate the metal chassis from the rack ground loop.
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