Product Details
Product Overview
The Yokogawa RB401 acts as a high-performance Remote Input/Output (RIO) Bus Module, specifically engineered for the Yokogawa DCS ecosystem. It facilitates the high-speed exchange of field data between distributed I/O units and the central control station. We supply this module as 100% Brand New and Original, manufactured in Japan to meet the most rigorous industrial standards for process control and factory automation.
Technical Specifications
The RB401 utilizes advanced AS S9451DB-03 architecture to ensure deterministic communication across industrial networks.
| Feature | Specification Details |
| Model Type | AS S9451DB-03 |
| Primary Function | Remote I/O (RIO) Bus Interface |
| Country of Origin | Japan |
| Dimensions | 2.5 cm x 25.4 cm x 20.3 cm (1.0" x 10.0" x 8.0") |
| Weight | 0.3 kg |
| Applications | DCS, PLC, Data Acquisition, Test & Measurement |
| Condition | 100% Brand New Original |
Engineering Advantages
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Optimized Bus Communication: The RB401 optimizes the RIO bus architecture, allowing for the connection of multiple remote field stations while maintaining low latency. This deterministic performance ensures that critical control signals reach field actuators within strict timing windows, which is essential for stable process control.
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Compact, High-Density Design: The slim 2.5 cm (1.0") profile allows for maximum card density within the control rack. This compact form factor solves the challenge of limited cabinet space, enabling engineers to expand I/O capacity without upgrading to larger, more expensive enclosures.
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Superior Noise Immunity: Designed for harsh industrial environments, the module incorporates robust shielding and signal isolation. These features protect the control bus from electromagnetic interference (EMI) generated by high-power motors and variable frequency drives (VFDs) common in factory automation.
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Versatile Industry Deployment: The RB401 seamlessly integrates into diverse systems, ranging from large-scale petrochemical process control to high-speed test and measurement setups. Its modular nature allows for rapid hardware replacement, significantly reducing Mean Time to Repair (MTTR).
FAQs
Does the RB401 support redundant configurations?
Yes. In mission-critical applications, you can deploy the RB401 in a dual-redundant RIO bus setup. This configuration ensures that if one communication path or module fails, the secondary path maintains the data flow, preventing system trips or process downtime.
What are the primary installation requirements for this module?
The RB401 requires a compatible Yokogawa RIO bus backplane. Ensure you have the correct terminal resistors at the end of the RIO bus segment to prevent signal reflection and maintain the 10 Mbps (or rated) bus speed.
Can I use the RB401 in older Yokogawa DCS systems?
The RB401 (Type AS S9451DB-03) follows Yokogawa's standard RIO specifications. While it maintains high backwards compatibility, always verify your specific system software version and station model to ensure full feature support.
Is this a refurbished or "surplus" unit?
Absolutely not. We offer only 100% Brand New Yokogawa hardware. Every RB401 arrives in its original factory anti-static packaging, complete with the manufacturer’s serial number and quality control markings to guarantee authenticity and longevity.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Marshalling Cabinets in Industrial Control Systems Architecture
Industrial control system deployments rely on structured signal distribution to bridge field instrumentation with central processing hardware. A marshalling cabinet serves as the vital intermediate connection point between heavy field home-run multi-pair cables and delicate input/output (I/O) modules housed inside Programmable Logic Controller (PLC) or Distributed Control System (DCS) enclosures. By segregating field cable terminations from control hardware, engineers maintain system flexibility, safeguard controller components, and streamline commissioning workflows.
FAT vs SAT in Industrial Control Systems: Key Differences and Execution Guide
Industrial control system deployment relies on strict verification protocols to guarantee operational safety, system stability, and regulatory compliance. Commissioning complex Programmable Logic Controller (PLC) racks, Distributed Control Systems (DCS), and Safety Instrumented Systems (SIS) requires two critical milestones: the Factory Acceptance Test (FAT) and the Site Acceptance Test (SAT). Both procedures validate that system automation meets design specifications, but they occur at different stages of project execution and target distinct operational risks.
Hub vs Switch vs Router in Industrial Automation Architecture
Modern factory automation relies on reliable industrial networking infrastructure to exchange real-time field data across operational technology systems. Engineers often encounter networking hardware like hubs, switches, and routers when integrating Programmable Logic Controllers, Distributed Control Systems, and SCADA monitoring nodes. Although these devices share physical ports, they operate at different layers of the Open Systems Interconnection reference model and deliver distinct traffic management capabilities.