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Extend Your ESB Bus Network with Precision

The SNT501-E3 from Yokogawa functions as an Optical ESB Bus Repeater Slave Module. It extends your ESB Bus network using high-speed fiber-optic connections. Connect it directly from an Optical ESB Bus Repeater Master Module or N-ESB Bus Module to the ESB Bus Interface Module (SSB401) on the safety node unit (SNB10D). This design supports both star and chain-type topologies, ensuring flexible deployment in industrial automation environments.

Key Technical Specifications

• Function: Optical transport for ESB Bus networks
• Connection Types: Star and chain-type configurations
• Connection Stages: Supports up to two connecting stages
• Transmission Distance:
  • Standard: Up to 5 km (two stages)
  • With Vnet/IP System (R1.03+): Total distance up to 10 km (two stages)
• Current Consumption: 0.5 A
• Weight: Approximately 0.3 kg
• Operating Temperature: -20 to 70 °C (maintenance purposes only)
• Compliance: ISA Standard G3
• Explosion Protection: Available with suffix -E

Reliable Integration in Safety Systems

Yokogawa designed the SNT501 Optical ESB Bus Repeater Slave Module for seamless integration into safety-critical networks. Its lightweight 0.3 kg frame reduces mounting complexity, while the fiber-optic interface guarantees minimal signal loss over extended distances. Maintenance teams benefit from the module’s robust temperature tolerance, ensuring stable performance in harsh industrial environments.

Why Choose the SNT501-E3

Engineers prefer the SNT501-E3 for its ability to support long-distance optical transmission and flexible network topologies. Its low power consumption of 0.5 A improves overall system efficiency, and the module’s compliance with ISA G3 standards ensures reliable operation under stringent safety protocols.

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