SB401-10 Yokogawa | 10M ESB Bus Interface Module for DCS

Product Overview

The SB401-10 (Model: SB401) is a high-performance ESB (Enhanced Serial Bus) interface module engineered for Yokogawa’s CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). It serves as the primary communication bridge between the Field Control Unit (FCU) and Extended Serial Backplane (ESB) Bus Node Units. By enabling high-speed, deterministic data transfer, the SB401-10 (Part Number: SB401-10) ensures that remote I/O modules integrate seamlessly with the central controller while maintaining the real-time performance required for critical process control loops.

Installed directly into the FCS base unit, the module facilitates robust synchronization and system-level diagnostics. The SB401-10 (Model: SB401-10) is essential for high-availability architectures, supporting dual-redundant configurations that are standard in mission-critical industries such as oil and gas, petrochemicals, and power generation.

Detailed Technical Specifications

The SB401-10 provides a reliable physical and logical layer for distributed I/O communication.

• Manufacturer: Yokogawa Electric Corporation

• Model Number: SB401-10

• Product Type: ESB Bus Interface Module

• System Compatibility: CENTUM VP, CENTUM CS 3000

• Bus Protocol: ESB (Enhanced Serial Bus)

• Connector Type: 36-pin dedicated bus connector

• Communication Speed: High-speed deterministic internal bus

• Max. Transmission Distance: 10 meters (using standard ESB bus cables)

• Installation Slot: Dedicated I/O module slot in FCS or Node Unit backplane

• Redundancy: Supports dual-redundant configuration for fail-safe operation

• Current Consumption: 0.5 A at 5 V DC (drawn from backplane)

• Diagnostics: Integrated Status LEDs (RUN, ERR) and system-level fault detection

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: –20 °C to +70 °C

• Operating Humidity: 10% to 90% RH (non-condensing)

• Weight: 0.30 kg

• Compliance: Meets industrial EMC and safety standards