Long-Distance Optical Extension for CENTUM and ProSafe-RS
The Yokogawa SNT511-13 functions as an optical ESB bus repeater slave module within Yokogawa CENTUM VP, CS3000, and ProSafe-RS platforms. This module converts optical signals from the master repeater back into electrical ESB bus signals for remote I/O nodes. It works in conjunction with the master module SNT411 or SNT401 to extend the ESB bus transmission distance . The SNT511-13 supports a maximum extension length of up to 50 km when used in a two-stage configuration with its master counterpart . Its optical interface provides complete galvanic isolation, eliminating ground loops and electromagnetic interference issues.
Flexible Topology and Fiber Support
The module supports both star and daisy-chain (chain) connection topologies for versatile network layouts . It accommodates both multi-mode and single-mode optical fiber types, offering flexibility for different distance requirements . The SNT511-13 utilizes a dual-redundant architecture, ensuring high reliability and fault tolerance for critical safety communication . LED indicators for power, link, and status provide clear visual diagnostics for network monitoring .
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | SNT511-13 |
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Optical ESB Bus Repeater Slave Module |
| Supported Systems | CENTUM VP, CS3000, ProSafe-RS |
| Maximum Transmission Distance | Up to 50 km (with SNT411/SNT401) |
| Communication Speed | 128 Mbps |
| Fiber Types Supported | Multi-mode and Single-mode |
| Connector Type | Optical (fiber) |
| Redundancy | Dual-redundant architecture |
| Topologies Supported | Star and chain |
| Mounting | DIN rail or panel mount |
| Operating Temperature | -20°C to +70°C (version dependent) |
| Storage Temperature | -20°C to +70°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Certifications | CE, RoHS; Laser Class 1 (IEC 60825) |
| Country of Origin | Japan |
Installation and Typical Applications
You can install the SNT511-13 in a safety node unit (SNB10D) or a unit for the optical bus repeater module (SNT10D) . The module connects via fiber-optic cable to the master module, effectively bridging the ESB bus over extended distances. Its immunity to electromagnetic interference makes it ideal for harsh industrial environments . Common applications include power generation, chemical processing, oil and gas refineries, and large-scale plants where distributed I/O requires reliable long-distance communication .
Details
| Weight | 3.6 kg |
|---|---|
| Dimensions | 190 × 108 × 135 mm |
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