Product Overview
The Yokogawa SEC402 ESB Bus Coupler Module is a high-performance communication interface module designed for Yokogawa modular automation platforms. As a two-port ESB Bus interface module, the SEC402 provides reliable communication between compatible processing units and distributed system components through the Yokogawa ESB Bus network.
Featuring dual ESB Bus ports, the SEC402 is designed for flexible system layouts and efficient module expansion. It supports high-speed data transmission and offers a compact rack-mounted structure, making it suitable for industrial installations where stable communication, space optimization, and long-term reliability are required.
The module is widely applied in Yokogawa ProSafe-RS based installations and is commonly integrated with compatible Safety Control Units and Safety Node Units to build scalable industrial automation architectures.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Yokogawa |
| Model | SEC402 |
| Product Type | ESB Bus Coupler Module |
| Port Type | 2-Port ESB Bus Interface |
| Function | ESB Bus Master Interface |
| Compatible Platform | Yokogawa ProSafe-RS Series |
| Communication Speed | 128 Mbps |
| Transmission Distance | Maximum 10 m per ESB Bus connection |
| Connectable Units | Up to 9 units per upper/lower port |
| Network Structure | ESB Bus Communication Network |
| Connection Cable | Yokogawa YCB301 ESB Bus Cable |
| Installation Position | 7th and 8th slots of compatible control unit |
| Current Consumption | Approx. 0.5 A |
| Mounting Method | Rack-mounted Module Installation |
| Dimensions (W × H × D) | Approx. 32.8 × 129.5 × 130 mm |
| Approximate Weight | 0.24 kg |
Typical Industrial Applications
The Yokogawa SEC402 is suitable for industrial environments requiring reliable communication between modular system components.
Common application areas include:
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Oil and gas processing facilities
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Petrochemical plants
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Chemical production facilities
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Power generation projects
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Water treatment facilities
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Pharmaceutical manufacturing
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Industrial utility systems
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Large-scale process automation installations
Its two-port design provides additional flexibility for distributed cabinet layouts and system expansion requirements.
Key Features & Benefits
The SEC402 ESB Bus Coupler Module provides several advantages for industrial users:
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Dual-port ESB Bus communication design
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High-speed 128 Mbps data transmission capability
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Supports flexible system configurations
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Compact rack-mounted construction
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Reliable communication between Yokogawa modules
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Compatible with dedicated ESB Bus cabling
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Low power consumption design
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Easy integration into existing Yokogawa installations
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Suitable for system expansion and replacement projects
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Designed for long-term industrial operation
Technical FAQs
1. What is the main function of the Yokogawa SEC402?
The SEC402 provides an ESB Bus interface function, allowing communication between compatible Yokogawa system units through the ESB Bus network.
2. How many ports does the SEC402 provide?
The SEC402 is a two-port ESB Bus Coupler Module, providing upper and lower ESB Bus connections.
3. What communication speed does the SEC402 support?
The module supports a transmission speed of 128 Mbps for I/O module data communication.
4. What is the maximum ESB Bus transmission distance?
The maximum transmission distance is approximately 10 meters for each ESB Bus connection.
5. How many units can be connected to the SEC402?
The module supports up to 9 connected units on the upper port and 9 connected units on the lower port under standard configurations.
6. Which cable is used with the SEC402?
The SEC402 uses the dedicated Yokogawa YCB301 ESB Bus cable for system communication connections.
7. Where is the SEC402 installed?
The module is installed in compatible Yokogawa control units, typically occupying the designated ESB Bus module slots.
8. What are the physical dimensions of the SEC402?
The module dimensions are approximately 32.8 × 129.5 × 130 mm.
9. What is the weight of the SEC402?
The approximate weight of the module is 0.24 kg, allowing convenient installation and replacement.
10. Why choose the Yokogawa SEC402?
The SEC402 combines dual-port communication capability, high-speed data transfer, compact construction, and proven Yokogawa system compatibility, making it a reliable choice for industrial automation projects.
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