The Yokogawa RB301, also cataloged as theS2 RIO Bus Interface Master Card, is a dedicated communication module designed for Remote I/O (RIO) bus interfacing within Yokogawa’s CENTUM control systems. It serves as the master interface card, enabling seamless communication between the control processor and distributed I/O subsystems.
Hardware Specifications
Manufacturer: Yokogawa
Product No.: RB301
Product Type: S2 RIO Bus Interface Master Card
Application: Remote I/O bus communication for CENTUM systems
Bus Type: RIO (Remote I/O) S2 interface
Isolation: Optical isolation for signal integrity
Transmission Speed: High‑speed bus communication (128 Mbps typical for ESB/RIO systems)
Connector Type: Dedicated backplane and bus connectors
Compatibility: CENTUM VP and CENTUM CS 3000 series
Redundancy: Supports dual‑redundant bus configurations
Weight: ~1.5 Kg
Features
Master Bus Interface: Acts as the central controller for RIO bus communication.
High‑Speed Data Transfer: Ensures deterministic communication between I/O subsystems and control processors.
Optical Isolation: Provides robust protection against electrical noise and interference.
Redundancy Support: Operates in simplex or dual‑redundant configurations for fault tolerance.
System Integration: Designed for seamless operation within Yokogawa CENTUM VP architectures.
Frequently Asked Questions (FAQ)
Q: What is the primary function of the RB301? A: It serves as the master card for S2 RIO bus communication, linking control processors with distributed I/O.
Q: Does the RB301 support redundancy? A: Yes, it supports dual‑redundant bus configurations for enhanced reliability.
Q: Which systems are compatible with the RB301? A: It is compatible with Yokogawa CENTUM VP and CENTUM CS 3000 series control systems.
Field Installation Guidelines
Mount the RB301 securely within the designated rack slot.
Ensure proper seating of bus connectors to maintain communication integrity.
Maintain separation between bus cabling and high‑voltage wiring.
Verify redundancy configuration during commissioning.
Perform diagnostic checks to confirm stable RIO bus communication.
