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Yokogawa ANB11D-215/BU2A Optical ESB Bus Node Unit
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- Part Number: ANB11D-215/BU2A
- Brand: Yokogawa
- Type: Communication Modules
- Dimensions: 3.3x10.7x13cm
- Country of Origin: Japan
- Barcode: 8537101190
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Additional Specifications
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| Communication Protocols |
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Tags:
Communication Modules
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Yokogawa CENTUM
Product Description
Configured for high-speed deterministic expansion in distributed control systems, the Yokogawa ANB11D-215/BU2A (ANB11D-215/BU2A Optical Node Unit) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
| Suffix Segment | Parameter Designation | Description & Configuration |
|---|---|---|
| ANB11D | Base Model | Node Unit for Dual-Redundant ESB Bus with Integrated Optical Repeater |
| -2 | Power Supply / Distance | Dual-redundant power configuration supporting optical repeater link |
| 1 | Power Input Suffix | 100-120 V AC power supply input rating |
| 5 | Environmental Rating | Basic type with no explosion protection classification |
| /BU2A | Connector Suffix | BU2A connector unit with built-in ESB bus terminator |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ANB11D-215/BU2A |
| Brand | Yokogawa |
| Origin | Global Manufacturing Facility |
| Weight | System-dependent rack enclosure format |
| Dimensions | Standard 19-inch rack mounting form factor |
| Operating Temp | Standard industrial cabinet range |
| Power Consumption | Dual-redundant AC supply load |
| Power Supply | Dual-redundant active-active (220-240 V AC, 50/60 Hz) |
| Transmission Range | Up to 5 km via optical fiber cabling |
4-20 mA HART Loop Protocol and Channel Isolation
The optical node unit manages analog control loops and digital telemetry through robust channel isolation circuitry, protecting internal backplane logic from ground loops and electrical transients over long-distance runs. FOUNDATION Fieldbus and Profibus PA connectivity frameworks operate seamlessly across the overarching DCS infrastructure, while cold junction compensation (CJC) maintains thermal equilibrium for terminal blocks. 4-20 mA HART loop protocol compatibility ensures transparent transmission of multi-variable field instrument data without signal attenuation.
Frequently Asked Questions
Q: What is the maximum transmission range supported by the ANB11D-215/BU2A unit?
A: The integrated optical repeater allows the ESB bus communication distance to be extended up to 5 km using fiber optic cabling.
Q: Does the module feature a dual-redundant power configuration?
A: Yes. The hardware architecture incorporates a dual-redundant active-active power supply setup operating on 220-240 V AC.
Q: Can this optical node unit be replaced while the control network rack is energized?
A: Replacement procedures must comply with Yokogawa system safety guidelines, ensuring proper bus isolation and redundant power shutdown to prevent network interruption.
Field Installation Guidelines
- Mount the 19-inch rack unit securely into the control cabinet using appropriate mechanical fastening and grounding practices to prevent ground loops.
- Verify that all power feeds are isolated and locked out prior to connecting wiring to the terminal blocks.
- Connect the fiber optic cables and ESB bus communication lines carefully to the BU2A connector interface, maintaining clean connector faces.
- Check power status indicators and verify optical link communication quality using engineering software before re-energizing the system.
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