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Product Overview

YOKOGAWA SEC401-51 ESB Bus Coupler Module

SEC401-51

The YOKOGAWA SEC401-51 ESB Bus Coupler Module provides seamless communication and control management within Yokogawa ProSafe-RS safety systems. Engineered with a 128 Mbps transmission speed and robust compact build, it ensures stable and secure integration for industrial safety control units.

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YOKOGAWA SEC401-51 ESB Bus Coupler Module for ProSafe-RS Safety System

Product Overview

The YOKOGAWA SEC401-51 is a high-performance ESB Bus Coupler Module engineered specifically for the ProSafe-RS safety instrumented system architecture. As a core communication component, it acts as the master interface for the Enhanced Safety Bus (ESB), linking safety control units (such as S2SC70, SSC60, or SSC50) with remote safety node units. Designed to meet strict industrial safety and reliability standards, the SEC401-51 guarantees uninterrupted data exchange in high-stakes automation environments.

Key Features & Highlights

  • ProSafe-RS Integration: Built exclusively for integration within Yokogawa ProSafe-RS safety control architectures, ensuring flawless hardware and software compatibility.

  • High-Speed Data Transmission: Operates at a robust 128 Mbps transmission speed to manage I/O module data transfer efficiently without latency.

  • Extended Unit Capacity: Supports connection of up to 9 compatible safety node units (such as SNB10D and SNT4 series) per coupler interface.

  • Compact Design: Features space-saving physical dimensions (approx. 32.8 mm width) optimized for installation in designated control unit slots.

  • Rugged Industrial Reliability: Operates reliably with low current consumption (0.5 A) and an ultra-lightweight form factor of approximately 0.24 kg, minimizing stress on backplanes and DIN mounting frameworks.

Functional Architecture

The SEC401-51 mounts directly onto the seventh and eighth slots of compatible safety control units. It utilizes specialized ESB bus cables to maintain secure communication loops, ensuring fault-tolerant performance across complex industrial safety loops.

Application

  • Oil & Gas Refineries: Emergency shutdown systems (ESD) and fire & gas (F&G) monitoring networks.

  • Petrochemical & Chemical Plants: High-integrity pressure and temperature protection loops.

  • Power Generation Facilities: Boiler safety interlocks and turbine emergency trip systems.

  • Offshore Platforms: Critical process safety control and hazardous area monitoring infrastructure.

Technical Specifications

Item / Feature Specification Details
Model Code SEC401-51
Suffix Codes -5 (Standard type with no explosion protection), -E (Explosion protection option), 1 (With ISA Standard G3 coating)
System Compatibility ProSafe-RS Safety Instrumented System
Module Function ESB bus master interface function
Connectable Units 9 units maximum (SNB10D and SNT4 series)
Transmission Speed 128 Mbps (I/O module data transmission)
Transmission Distance 10 m maximum
Current Consumption 0.5 A
Weight Approx. 0.24 kg
Dimensions Approx. 32.8 mm x 130 mm x 129.5 mm
Mounting Slot Seventh and eighth slots of the safety control unit

SEC401-51

FAQ

Q1: What is the primary function of the YOKOGAWA SEC401-51?

A: The SEC401-51 serves as an ESB bus master interface module that connects safety control units and safety node units via an ESB bus cable within ProSafe-RS systems.

Q2: How many safety node units can be connected to the SEC401-51?

A: It supports up to 9 connectable units, including compatible safety node units such as the SNB10D and SNT4 series.

Q3: Which control units are compatible with the SEC401-51 module?

A: It is designed to be mounted on designated slots (seventh and eighth slots) of safety control units such as S2SC70, SSC60, or SSC50.

Q4: What is the data transmission speed of this ESB bus coupler?

A: The module supports an I/O module data transmission speed of 128 Mbps over a maximum transmission distance of 10 meters.

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