Yokogawa | SNT401-53 | Optical Bus Repeater Module

Description：

The Yokogawa SNT401‑53 is an optical bus repeater module designed for long‑distance ESB bus communication, providing signal regeneration, optical isolation, and stable data transmission for CENTUM control systems.

Specifications

• Part Number: SNT401‑53

• Series: CENTUM VP / CS 3000

• Module Type: Optical Bus Repeater Module

• Function: Extends ESB bus communication distance via optical transmission

• Transmission Medium: Optical fiber (single‑mode)

• Transmission Speed: 128 Mbps ESB bus

• Optical Ports: Dual optical ports for redundant or extended links

• Electrical Interface: ESB electrical bus input/output

• Isolation: Optical isolation between electrical and fiber segments

• Distance Support: Supports long‑distance ESB communication (kilometer‑scale)

• Diagnostics: LED indicators for link status and communication health

• Power Supply: Supplied via I/O base

• Operating Temperature: –20 °C to +70 °C

• Mounting: Mounted on Yokogawa ESB/optical repeater baseplate

Features

• Optical Signal Regeneration: Restores ESB bus signals for long‑distance transmission

• High‑Speed ESB Communication: Supports 128 Mbps high‑speed control bus

• Noise Immunity: Optical isolation eliminates electrical noise interference

• Redundant Link Support: Dual optical ports enable redundancy or extended topology

• Reliable Integration: Fully compatible with CENTUM VP/CS 3000 ESB architecture

• Industrial Durability: Designed for harsh industrial and long‑distance communication environments