Reliable Fieldbus Connectivity and Node Management
This node unit serves as a fieldbus interface between the control system and remote instruments. It connects distributed I/O devices to the main DCS network through a redundant communication path. The Yokogawa ANB10D handles up to 64 field devices per segment with automatic node addressing. It supports both Foundation Fieldbus H1 and PROFIBUS PA protocols for flexible integration. The unit achieves a cycle time of 50 ms for deterministic process control. It performs continuous diagnostics to monitor network health and device status.
Physical Dimensions and Mounting Specifications
The unit measures 140 mm in height, 80 mm in width, and 150 mm in depth. It weighs approximately 1.1 kg with all mounting brackets and terminal covers attached. The ANB10D mounts securely onto a standard 35 mm DIN rail inside a field enclosure. Its IP20-rated housing provides protection against solid objects and accidental contact. This robust construction suits outdoor and harsh industrial installations.
Interface Connectivity and Power Requirements
A front-facing 9-pin D-sub connector serves as the primary fieldbus interface. The Yokogawa ANB10D requires a 24 V DC supply voltage for its internal circuitry. Typical current consumption stays below 300 mA under full load conditions. The unit connects to the host system via a dedicated backbone communication cable. LED indicators display power, network activity, and error status clearly. These indicators simplify commissioning and field troubleshooting procedures.
Internal Architecture and Energy Storage Components
The PCB contains a main processor, fieldbus controller, and isolated power regulation circuits. A 500 µF capacitor provides local energy storage for ride-through during power fluctuations. The ANB10D stores node configuration and device parameters in onboard flash memory. The unit includes a replaceable fuse on the power input for overcurrent protection. Surge suppression devices guard the fieldbus transceiver against transient overvoltages.
| Parameter | Specification |
|---|---|
| Model | ANB10D |
| Type | Node Unit / Fieldbus Interface |
| Protocols | Foundation Fieldbus H1, PROFIBUS PA |
| Devices per Segment | Up to 64 |
| Cycle Time | 50 ms (typical) |
| Supply Voltage | 24 V DC ±10% |
| Current Draw | ≤300 mA |
| Dimensions (H×W×D) | 140 × 80 × 150 mm |
| Weight | 1.1 kg |
| Operating Temperature | –10 to +60 °C |
| Storage Temperature | –25 to +85 °C |
| Protection Class | IP20 |
| Fieldbus Interface | 9-pin D-sub connector |
| Host Interface | Dedicated backbone cable |
| Energy Storage | 500 µF capacitor |
| Power Protection | Fuse and surge suppression |
Recommended Installation Practices
Position the Yokogawa ANB10D as close as possible to the field devices for optimal signal quality. Use approved fieldbus cables with proper termination resistors at both ends. Connect the cable shield to earth ground at a single reference point. Configure the node address using the DIP switches before network power-up. Verify communication with all connected devices using a handheld configurator. Schedule periodic inspections of cable connections and LED status indicators.
Details
| Weight | 1.1 kg |
|---|---|
| Dimensions | 140 × 80 × 150 mm |
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