Excellent PLC
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| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The Yokogawa SEC401-50 ESB Bus Coupler Module is a core component within the CENTUM CS 3000/VP and other Yokogawa process control systems. It serves as a high-speed communication interface between the control unit and the ESB (Extension Subsystem Bus), ensuring seamless data transfer and system synchronization across distributed I/O modules. The module is specifically designed for industrial automation environments, where reliability, deterministic performance, and robust communication integrity are critical.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | SEC401-50 ESB Bus Coupler Module |
| Function | High-speed bus coupler for ESB connection |
| Communication Bus | ESB (Extension Subsystem Bus) |
| Power Supply Voltage | 24 V DC (typical) |
| Power Consumption | 3 W – 5 W |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Tolerance | 10% to 90% RH (non-condensing) |
| Dimensions | 130 x 129.5 x 32.8 mm |
| Weight | 0.24 kg |
| Mounting | Installed in Yokogawa subsystem base unit |
| Reliability Features | Hot-swappable design, diagnostic LED indicators |
Product Applications
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Oil & Gas refining and petrochemical plants
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Power generation and utility automation systems
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Chemical processing facilities
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Water treatment and wastewater management plants
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Pulp & paper industries for production line monitoring
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Pharmaceutical manufacturing and batch process systems
Product Advantages
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High-Speed Communication: Supports fast and deterministic data transfer across ESB for real-time process control.
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System Flexibility: Simplifies expansion by connecting multiple I/O subsystems without compromising performance.
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Robust Reliability: Features built-in diagnostics and fault isolation, ensuring stable plant operations.
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Hot-Swappable Design: Allows replacement during operation without shutting down the system.
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Compact Form Factor: Optimized for dense control cabinets with minimal footprint.
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Seamless Integration: Fully compatible with Yokogawa control platforms for straightforward system engineering.
FAQ
Q1: How does the SEC401-50 handle communication synchronization between the controller and I/O modules?
A1: The module ensures deterministic communication by using ESB protocol with cycle-based synchronization, maintaining consistency across all connected I/O subsystems.
Q2: Can the SEC401-50 be used in redundant system configurations?
A2: Yes, the module supports redundancy and can be paired to enhance system reliability in mission-critical operations.
Q3: What diagnostic features are available on the SEC401-50?
A3: It includes status LEDs and internal self-checking diagnostics to monitor communication health and power supply integrity.
Q4: Is the module hot-swappable during live operation?
A4: Yes, the SEC401-50 is designed for hot-swap capability, minimizing downtime during replacement or maintenance.
Q5: What type of error handling mechanisms does the module use?
A5: It employs error detection and recovery functions, including parity checks and re-transmission for reliable communication.
Q6: Can the module support long-distance ESB cabling?
A6: Yes, it supports extended cabling lengths as defined by ESB standards, ensuring flexibility in plant layout.
Q7: How does the module manage bandwidth when multiple I/O subsystems are connected?
A7: The ESB protocol dynamically manages bandwidth allocation to maintain deterministic communication performance.
Q8: Is firmware upgradable on the SEC401-50?
A8: Yes, the module firmware can be updated via Yokogawa engineering tools to enhance performance or add new features.
Q9: What happens if one ESB Bus Coupler fails in a redundant system?
A9: The system automatically switches control to the standby coupler, ensuring uninterrupted operation.
Q10: How does the module interact with Yokogawa engineering software?
A10: The module is fully integrated with Yokogawa’s engineering tools, allowing configuration, diagnostics, and monitoring through a unified platform.
Related Models
| Model Number | Description |
|---|---|
| SEC401-51 | Enhanced ESB Bus Coupler Module (next-gen version) |
| SEC401-10 | Standard ESB Bus Coupler Module |
| SEC401-20 | ESB Coupler with extended diagnostic features |
| SEC402-01 | ESB Bus Coupler for high-capacity subsystems |
| SEC403-10 | Compact ESB Bus Coupler for small I/O racks |
| SEC401-30 | Redundant-compatible ESB Bus Coupler Module |
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| Model Number | Description |
|---|---|
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| PFA231-S00 | Power Supply Module for I/O base units |
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