YOKOGAWA SNT401-53 STYLE S1 OPTICAL BUS REPEATER MODULE

Description:

The Yokogawa SNT401-53 Style S1 Optical Bus Repeater Module is used an industrial communication module used in Yokogawa ProSafe-RS and CENTUM VP systems to extend ESB (Enhanced Serial Bus) communication over long distances. It converts electrical ESB bus signals into optical signals, enabling high-speed, noise-resistant communication between control units, safety nodes, and I/O systems via fiber optic cabling.

Applications:

The Yokogawa SNT401-53 is used in industrial control and safety systems to extend communication between distributed control system (DCS) components. It is commonly deployed in oil & gas, LNG plants, chemical processing, and power generation. The module supports long-distance communication between safety controllers and remote I/O nodes, improving system reliability in electrically noisy or large-scale environments.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: SNT401-53 S1
• Product Type: Optical ESB Bus Repeater Module
• Function: Converts ESB bus electrical signals to optical signals
• Communication Medium: Fiber optic cable (multi-mode / single-mode)
• Transmission Distance: Up to ~5 km typical (up to ~10 km depending on system)
• Network Topology: Supports star and chain configurations
• Power Supply: Internal system power (5 VDC / 24 VDC system dependent)
• Channels: 2-channel ESB bus communication
• Operating Temperature: Approx. -20 to 60–70 °C (config dependent)
• Environmental Rating: ISA G3 (corrosion-resistant coating)
• Mounting: Rack / panel-mounted module
• Function: Extends communication distance and improves signal integrity

Common Replacements:

• Yokogawa SNT521-53
• Yokogawa ANT502-53
• Yokogawa SNT401-13