Product Description
The EC402-50 (Part Number: EC402-50) is a slave-side communication interface module used in Yokogawa CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). Installed within a local node unit, it operates as the Extended Serial Bus (ESB) receiver, enabling deterministic, high-speed data exchange between the Field Control Unit (FCU) and distributed I/O modules.
Designed for continuous operation in mission-critical environments, the EC402-50 receives ESB signals from the master-side coupler (EC401) and distributes them across the node unit’s internal backplane. This architecture ensures synchronized process data handling and reliable I/O scanning for real-time control applications.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Identifier | EC402-50 |
| Function | ESB Bus Coupler Module (Slave Side) |
| Bus Interface | ESB (Extended Serial Bus) |
| Transmission Bandwidth | 128 Mbps |
| Node Capacity | Up to 9 units (upper side) + 9 units (lower side) System maximum: 13 units |
| Maximum Cable Length | 10 m per segment (Total ≤ 20 m) |
| Power Requirement | 5 V DC |
| Current Consumption | 0.5 A |
| Operating Temperature | -10°C to +60°C |
| Dimensions (W × H × D) | 129.5 mm × 130 mm × 32.8 mm |
| Net Weight | 0.24 kg |
| Mounting | Dedicated slot for ANB10 / ANB11 Node Units |
Performance & Integration
The EC402-50 is optimized for low-latency I/O scanning, making it ideal for fast control loops and time-sensitive process operations. Unlike Ethernet-based communication modules, the ESB protocol provides a deterministic, non-collision data path, ensuring predictable response times.
Its compact design and efficient power usage make it well-suited for high-density node configurations, where space, thermal stability, and communication reliability are critical.
Application Scenarios
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Remote I/O expansion in CENTUM VP and CENTUM CS 3000 systems
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Installation in ANB10 and ANB11 Node Units
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Deterministic communication for process-critical I/O signals
Common industries:
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Oil & gas
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Chemical and petrochemical processing
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Power generation and utilities
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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