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Yokogawa S9342FA ESB Bus Connector Unit | Safety Network InterfaceYokogawa S9342FA ESB Bus Connector Unit | Safety Network InterfaceYokogawa S9342FA ESB Bus Connector Unit | Safety Network Interface
Yokogawa S9342FA ESB Bus Connector Unit | Safety Network Interface
Yokogawa S9342FA ESB Bus Connector Unit | Safety Network Interface
Yokogawa S9342FA ESB Bus Connector Unit | Safety Network Interface

Yokogawa S9342FA ESB Bus Connector Unit | Safety Network Interface


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PRODUCT SKU : S9342FA

PRODUCT TYPE : Bus Connector Unit

PRODUCT VENDOR : Yokogawa


  • 100% Genuine Parts – Risk-Free 30-Day Returns
  • 1-Year Warranty & Expert Support for Every Order

Product Details

Product Description

The S9342FA serves as a critical hardware interface for Yokogawa ProSafe-RS safety instrumented systems, enabling reliable data bridging across the ESB (Extended Safety Backplane) bus. This unit is specifically engineered to maintain high-integrity communication between safety control stations and remote I/O nodes, ensuring deterministic data transfer in mission-critical environments.

Technical Specifications

  • Operating Voltage: 24 VDC nominal

  • Power Consumption: 1.5 W maximum

  • Communication Protocol: Safety Network Communication Protocol (SNcP)

  • Physical Interface: Standard RS-485

  • Module Capacity: Support for up to 32 safety-related I/O modules

  • Diagnostics: Integrated hardware watchdog timer for continuous SNB10D status monitoring

  • Safety Compliance: Certified to IEC 61158 and IEC 61784 standards

  • Thermal Range: -20 to 70 °C (-4 to 158 °F)

  • Form Factor: 75 x 35 x 23 mm

  • Mass: 1 kg 

Industrial Applications

The S9342FA is deployed within distributed safety architectures where SIL3-rated protection is mandatory. It is frequently utilized in Emergency Shutdown Systems (ESD), Fire and Gas (F&G) detection networks, and burner management systems (BMS) across the petrochemical and power generation sectors.

Common Integration FAQ

How does the unit handle communication faults?The S9342FA utilizes its internal watchdog timer to detect processing delays or hardware hangs in the safety node. If a failure is detected, the system transitions to a predetermined failsafe state to maintain plant integrity.

Is this unit hot-swappable within the ESB bus?In most ProSafe-RS configurations, bus connectors should be handled according to specific Yokogawa maintenance protocols to avoid interrupting the safety loop. Always refer to your specific system topology documentation before removal.

Additional Information

  • 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
  • 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
  • 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
  • Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
  • Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
  • Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.




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