Overview
The Yokogawa EB402‑10 is a high-performance ESB bus coupler module designed for CENTUM CS 3000 and CENTUM VP distributed control systems. Serving as the master communication interface, it connects the Field Control Unit (FCU) to remote I/O nodes, enabling reliable, high-speed cyclic data transmission. Redundant configurations are supported to maximize system availability.
Key Features
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Acts as the ESB master module to manage communication between FCU and remote I/O nodes
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Supports redundant ESB bus configurations for high system reliability
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Handles high-speed cyclic data exchange for I/O modules
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Fully compatible with SSB401 series ESB slave modules
Technical Specifications
Communication
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Bus Type: ESB (Enhanced Serial Bus)
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Transmission Method: High-speed serial communication
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Cyclic Data Rate: 128 Mbps
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Maximum Remote I/O Nodes: Up to 9 (depending on system configuration)
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Cable Type: Shielded twisted-pair (standard ESB)
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Segment Distance: Up to 10 m per segment
Electrical
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Power Supply: Provided by FCU backplane
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Power Consumption: Approximately 3–5 W (depending on system revision)
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Isolation: Galvanic isolation between bus and internal circuits
Environmental
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Operating Temperature: 0 to 50 °C
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Storage Temperature: –20 to 70 °C
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Humidity: 5–95% RH, non-condensing
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Vibration Resistance: Industrial-grade, compliant with Yokogawa FCU standards
Physical
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Mounting: FCU baseplate slot
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Weight: 0.3 kg
Applications
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Process automation systems in industrial facilities
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Distributed Control System (DCS) network expansion
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High-availability control systems requiring redundant communication
FAQ (Frequently Asked Questions)
Q: Which remote I/O modules are supported by EB402‑10?
A: Compatible with SSB401 series slave modules, supporting up to 9 nodes depending on system configuration.
Q: Does EB402‑10 support redundant communication?
A: Yes, it supports dual-channel redundant ESB bus configurations to ensure continuous operation of critical control tasks.
Q: What is the maximum cable distance?
A: Single ESB segment can reach approximately 10 meters; planning for multiple segments is recommended for larger systems.
