Product Overview

The Yokogawa S9342FA is a precision-engineered Connector Unit specifically developed for the Extended Serial Backplane (ESB) Bus. This module acts as the physical link between the ESB communication backbone and the system's control modules within a CENTUM VP or CS 3000 Field Control Station (FCS). By providing a high-integrity connection point, the S9342FA facilitates the seamless flow of data and power, ensuring that communication between the controller and I/O nodes remains uninterrupted.

Designed to maintain the strict physical layer requirements of Yokogawa's proprietary network, the S9342FA minimizes signal attenuation and electrical noise. It is an essential component for system integrators and maintenance engineers who require reliable, low-resistance termination within industrial control cabinets to support continuous plant operations.

Technical Specifications

• Manufacturer: Yokogawa

• Model Number: S9342FA

• Module Type: Connector Unit for ESB Bus

• Operating Voltage: 5 V DC

• Current Rating: 1.0 A to 2.0 A

• Contact Resistance: Max. 20 mΩ

• Insulation Resistance: ≥ 100 MΩ (at 500 V DC)

• Dielectric Strength: 1000 V AC for 1 minute

• Operating Temperature: -10°C to +60°C

• Humidity Range: 10% to 90% RH (non-condensing)

• Dimensions: 32.8 mm x 106.3 mm x 130 mm

• Weight: 0.05 kg (Net) / 0.3 kg (Shipping)

• Origin: Japan

Key Technical Characteristics

• Ultra-Low Contact Resistance: Optimized to deliver a resistance of less than 20 mΩ, preventing voltage drops across the backplane and ensuring high-fidelity data transmission for critical control signals.

• High Dielectric Isolation: Engineered with superior insulation materials that withstand up to 1000 V AC, protecting sensitive internal circuitry from electrical surges and common-mode noise.

• Stable Signal Coupling: Specifically calibrated for the ESB Bus standard, ensuring impedance matching and reducing signal reflection across the distributed control network.

• Industrial Environmental Compliance: Built to operate reliably in a wide thermal envelope (-10°C to +60°C), making it suitable for deployment in unconditioned control rooms and diverse industrial climates.

• Precision Form Factor: A compact, lightweight design allows for effortless installation into high-density cabinet configurations without adding significant mechanical stress to the backplane.

• Reliable Maintenance Interface: Provides a standardized, secure connection point that simplifies the replacement or expansion of I/O modules during live system maintenance or plant turnarounds.