Yokogawa SNT501-53 Optical Bus Repeater Module

The Yokogawa SNT501-53 is a highly reliable optical bus repeater module designed to enhance communication within complex industrial control networks. As part of the STARDOM and CENTUM series safety and control systems, this module plays a critical role in converting electrical ESB bus signals into optical signals for long-distance, interference-free transmission and reconversion at the destination point.

With its advanced optical interface, the SNT501-53 ensures stable data transfer, reduced noise susceptibility, and simplified network scalability. It is widely deployed in industries such as power generation, petrochemical processing, refining, and advanced manufacturing, where high-speed and uninterrupted communication is crucial.

Product Specifications

Product Applications

• Long-Distance Data Transmission

  Ensures reliable optical communication over distances up to 5 km or 10 km with advanced configurations, making it ideal for large industrial facilities.

• Fault Isolation in Critical Systems

  Provides effective electrical isolation to prevent damage or downtime caused by electromagnetic interference.

• Scalable Network Designs

  Supports cascaded repeater setups, enabling expansion of existing systems without major hardware overhauls.

• High-Reliability Industrial Processes

  Optimized for industries such as power plants, petrochemical plants, and manufacturing environments that demand non-stop, stable communication.

• Legacy System Integration

  Allows seamless upgrades from older ESB bus infrastructures to optical-based systems without requiring full system replacement.

Product Advantages

1. High Transmission Stability – Maintains consistent and reliable data flow even in noisy industrial environments.

2. Extended Range – Supports up to 10 km in optimized setups, perfect for extensive facilities.

3. Superior Noise Immunity – Optical transmission eliminates signal degradation from electromagnetic interference.

4. Flexible Topology – Compatible with star, chain, and hybrid network configurations.

5. Compact, Lightweight Design – Space-saving module with just 0.3 kg weight for easy installation.

6. Low Power Consumption – Consumes only 0.5 A, making it energy efficient.

7. Cascadable for Expansion – Allows up to two repeater stages for flexible system scaling.

8. Robust Build Quality – Designed to perform reliably in harsh industrial conditions.

9. Seamless Compatibility – Fully integrates with Yokogawa control and safety platforms.

10. Cost-Effective Solution – Enables cost-efficient upgrades without replacing the existing infrastructure.

FAQ

1. What is the main function of the SNT501-53?

It acts as an optical repeater, converting ESB bus signals for long-distance and interference-free data transmission.

2. What is the maximum communication distance?

Standard setups support up to 5 km, and advanced configurations with Vnet/IP allow up to 10 km.

3. Can the SNT501-53 be cascaded with other modules?

Yes, it supports up to two cascaded stages for expanded network coverage.

4. Does it support different network topologies?

Yes, it is compatible with star, chain, and hybrid configurations, offering design flexibility.

5. How does the module handle electrical interference?

By converting signals to optical, it eliminates risks from EMI, RFI, and grounding issues.

6. What is the current consumption of this module?

It operates efficiently at only 0.5 A, ensuring low energy usage.

7. Is this module compatible with existing Yokogawa systems?

Yes, it is designed to integrate seamlessly with Yokogawa’s DCS and safety platforms.

8. Can it be used in high-vibration environments?

Absolutely, it features industrial-grade durability and reliable performance even in harsh conditions.

9. How many modules can I use in one network?

Multiple modules can be deployed, with a maximum of two cascaded stages per segment for optimal performance.

10. Who should I contact for technical setup or purchasing information?

For any configuration or purchasing needs, please contact our customer service team for assistance.