High-Speed Optical Communication for CENTUM Systems
The Yokogawa SNT411-13 serves as an optical ESB bus repeater master module for the CENTUM VP and CS3000 platforms. This module converts electrical ESB bus signals to optical signals for extended-distance communication. It transmits data at a speed of 1 Mbps between the controller and remote I/O nodes . The SNT411-13 supports a maximum transmission distance of 2 km using optical fiber cables . Furthermore, this module includes two optical ports for ring or daisy-chain network topologies.
Communication Performance and Topology Support
The module’s optical ports transmit data using 850 nm wavelength multimode fiber for reliable signal integrity. It supports both redundant and non-redundant configurations for enhanced system availability . The SNT411-13 automatically detects and corrects transmission errors to ensure data integrity . Its fiber-optic communication eliminates electrical interference issues, making it suitable for high-noise industrial environments . Moreover, the module provides diagnostic LEDs for indicating link status and communication activity.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | SNT411-13 |
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Optical ESB Bus Repeater Master Module |
| Communication Speed | 1 Mbps |
| Transmission Distance | Up to 2 km |
| Fiber Type | Multimode (850 nm wavelength) |
| Optical Ports | 2 (for ring or daisy-chain) |
| Supported Systems | CENTUM VP, CS3000 |
| Topologies | Ring, daisy-chain |
| Redundancy Support | Yes |
| Diagnostics | Link status, communication error LEDs |
| Connector Type | ST connectors (optical) |
| Power Consumption | 4.5 W typical |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 70°C |
| Humidity | 10% to 90%, non-condensing |
| Mounting | DIN rail or panel |
| Certifications | CE, UL |
| Country of Origin | Japan |
Installation and System Integration
You can install the SNT411-13 in the CENTUM VP or CS3000 controller cabinet . The module connects directly to the ESB bus backplane and requires no additional configuration . Its fiber-optic links enable you to place I/O nodes up to 2 km from the controller . This capability makes it ideal for large-scale plants with distributed equipment . Consequently, engineers rely on the SNT411-13 for reliable optical communication in petrochemical, power generation, and pipeline control applications .
Details
| Weight | 3.6 kg |
|---|---|
| Dimensions | 190 × 108 × 135 mm |
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