Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ANB11D-B15/BU2A |
| Brand | Yokogawa |
| Product Type | Optical ESB Bus Node Units |
| Origin | Japan |
| Weight | Approx. 10 kg including 8 fully loaded I/O modules |
| Dimensions | 19-inch rack mounting configuration |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 200 VA, 120 W |
| Power Supply | 100 to 120 VAC, dual-redundant power supply |
| Frequency | 50/60 Hz +/- 3 Hz |
| ESB Bus Interface | Dual-redundant optical ESB Bus |
| Optical Transmission Distance | Up to 5 km using quartz single-mode optical fiber |
| Optical Connector | LC type compliant with IEC61754-20 |
| FIO Module Capacity | 8 I/O module slots |
| Mounting Method | 19-inch rack installation with M5 screw fixing |
| Humidity Range | 5% to 95% RH, non-condensing |
| Temperature Change Rate | Within +/- 10 deg C/hour |
| Explosion Protection | Basic type, no explosion protection |
Yokogawa DCS Optical ESB Communication Characteristics
The ANB11D-B15/BU2A manages optical ESB Bus communication between distributed FIO modules and FCU equipment. Moreover, the unit uses a dual-redundant optical bus architecture to maintain communication paths through separate optical transmission channels.
The node unit supports remote installation by transmitting digital and analog I/O data through quartz single-mode optical fiber. Therefore, it allows FIO module placement at extended distances from the main control unit while maintaining ESB communication performance.
The Yokogawa design incorporates optical ESB connectivity for CENTUM VP and CS 3000 environments. In addition, the node unit provides physical slots for FIO modules that handle field signal acquisition and output operations.
Frequently Asked Questions
Q: Does the ANB11D-B15/BU2A support redundant power operation?
A: Yes. The unit includes a dual-redundant power supply configuration with 100 to 120 VAC input.
Q: What communication medium does this node unit use for ESB Bus transmission?
A: The unit uses dual-redundant optical ESB Bus communication through quartz single-mode optical fiber with LC connectors.
Q: How many FIO modules can be installed in this node unit?
A: The ANB11D-B15/BU2A provides 8 slots for compatible FIO I/O modules.
Field Installation Guidelines
- Install the ANB11D-B15/BU2A inside a suitable 19-inch rack structure and secure the chassis according to mechanical installation requirements.
- Connect the dual-redundant power supply inputs using separated power paths where the system design requires redundant operation.
- Route optical ESB cables separately from high-voltage power cables to reduce mechanical stress and electromagnetic interference risks.
- Inspect LC optical connectors before installation and keep fiber end surfaces clean to prevent transmission loss.
- Verify FIO module installation positions before applying power to the node unit.
- Confirm grounding connections for the rack assembly according to the site electrical installation standard.
- Maintain sufficient airflow around the rack-mounted equipment to support the specified operating temperature range.
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