Product Name:ESB Bus Interface Slave Module
Brand Name: YOKOGAWA
Model Number:SB401-50 S1
Country of Origin:JAPAN
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
YOKOGAWA |
Model Number: |
SB401-50 S1 |
Country of Origin: |
JAPAN |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
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Specification |
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Model |
SB401-50 S1 |
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Manufacturer |
Yokogawa Electric Corporation |
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Product Type |
ESB Bus Interface Slave Module |
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System Compatibility |
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Communication Protocol |
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Transmission Speed |
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Bus Interface |
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Supported Node Units |
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I/O Module Support |
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Power Supply |
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Power Consumption |
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Operating Temperature |
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Storage Temperature |
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Relative Humidity |
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Isolation (ESB Bus to I/O) |
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Dimensions (W × H × D) |
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Weight |
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Mounting |
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Certifications |
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Country of Origin |
Japan |
The SB401-50 S1 is an ESB Bus Interface Slave Module from Yokogawa, engineered to establish high-speed communication between Field Control Units (FCU) and remote I/O node units within CENTUM VP, ProSafe-RS, and CENTUM CS 3000 distributed control systems. The SB401-50 S1 operates at 128 Mbps over the proprietary ESB bus, ensuring deterministic, low-latency data transfer. Supporting up to 9 node units per module and dual-redundant communication paths, the SB401-50 S1 delivers industrial-grade reliability for critical process automation. The “50” suffix denotes standard type without explosion protection, while “S1” identifies the hardware revision.
Deterministic 128 Mbps Throughput – Unlike standard Ethernet architectures that suffer from data collisions, the SB401-50 S1 utilizes fixed-bandwidth ESB communication, ensuring control system safety interlocks and process loops execute within predictable scan times.
Dual-Redundant Communication Paths – Supports dual ESB bus cabling; instantaneous path switching upon cable break or master-side failure prevents system trips and maintains process visibility.
Seamless System Integration – Fully compatible with Yokogawa CENTUM VP, ProSafe-RS, and CENTUM CS 3000/CS 1000 platforms, enabling straightforward expansion of DCS architectures without complex gateway configurations or software re-mapping.
Industrial-Grade Signal Integrity – S1 hardware revision incorporates enhanced EMI filtering and signal conditioning, protecting process data integrity in electrically noisy industrial environments.
Flexible Redundancy Options – Supports both single (ANB10S) and dual-redundant (ANB10D) configurations, adapting to varying system availability requirements.
Proven Yokogawa Quality – Manufactured in Japan to rigorous quality standards, backed by global support infrastructure.
High-Speed ESB Bus Communication – 128 Mbps transmission speed for real-time data exchange between FCU and remote I/O nodes
Dual-Redundant Configuration Support – Two SB401 modules can be installed in ANB10D node units for fault-tolerant operation
Comprehensive Node Connectivity – Supports up to 9 node units per module, with max. 8 I/O modules per node unit
Industrial-Grade Isolation – 1,500 V AC isolation between ESB bus and I/O circuits for enhanced safety
Wide Environmental Tolerance – Operates from 0°C to 55°C with 5–95% non-condensing humidity
Compact Form Factor – Lightweight design (approx. 0.18–0.6 kg) for space-efficient cabinet installation
Diagnostic LED Indicators – Front-panel status LEDs for ACT (active communication) and ERR (error detection)
Plug-and-Play Architecture – Basic type configuration simplifies hardware deployment and system expansion
EMI-Shielded Construction – Vibration-resistant, industrial-grade build quality for demanding environments
The SB401-50 S1 serves as the slave interface module within Yokogawa’s ESB bus architecture, performing several critical functions in distributed control systems.
Communication Interface. The module establishes the communication link between the Field Control Unit (FCU) and remote I/O node units via the Extended Serial Backplane (ESB) bus. It manages deterministic data packets, ensuring real-time process data from field instrumentation reaches the central processor with minimal latency.
I/O Signal Gateway. The SB401-50 S1 interfaces analog and digital I/O signals between the FCU and field devices. It connects to up to 8 I/O modules per node unit, enabling comprehensive field signal acquisition and control.
Redundant Path Management. When configured in dual-redundant mode with two SB401 modules in an ANB10D node unit, the module supports instantaneous switching between primary and secondary communication paths. This ensures uninterrupted operation in the event of cable failure or master-side issues.
Data Synchronization. The module operates in a master-slave bus architecture, providing deterministic, address-based communication between field I/O and control systems. This synchronization ensures fixed, predictable scan times for safety interlocks and process control loops.
Power Distribution. The SB401-50 S1 receives power from the system backplane or external 24 V DC supply. It works in conjunction with compatible power supply modules (PW481, PW482, PW484) to power I/O modules and field transmitters.
Diagnostic Reporting. Front-panel LED indicators provide real-time status monitoring. A steady green “ACT” light indicates active communication on the ESB bus, while an “ERR” light signals bus synchronization issues or hardware failure. Detailed error codes can be accessed through the system’s Human Interface Station (HIS).
Q1: What is the primary function of the SB401-50 S1 module?
A1: The SB401-50 S1 serves as an ESB Bus Interface Slave Module that connects field I/O signals to the Field Control Unit (FCU) via the high-speed ESB bus. It enables deterministic, low-latency communication between remote I/O node units and the central controller.
Q2: What do the suffix codes “-50” and “S1” indicate?
A2: The “-50” suffix indicates the standard type with no explosion protection, suitable for non-hazardous areas. The “S1” suffix denotes a specific hardware revision with enhanced signal conditioning and EMI filtering for improved signal integrity.
Q3: Can the SB401-50 S1 be used in redundant configurations?
A3: Yes. Two SB401-50 S1 modules can be installed in dual-redundant configurations within ANB10D node units. This provides fault-tolerant communication with instantaneous path switching upon failure.
Q4: How many node units and I/O modules can the SB401-50 S1 support?
A4: Each SB401-50 S1 module supports up to 9 node units. Each node unit can accommodate a maximum of 8 I/O modules.
Q5: What are the compatible system platforms for the SB401-50 S1?
A5: The SB401-50 S1 is compatible with Yokogawa CENTUM VP, ProSafe-RS, CENTUM CS 3000, and CENTUM CS 1000 distributed control systems. It integrates seamlessly into existing ESB-based architectures.
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