SNT401-53

Overview

The Yokogawa SNT401-53 is an optical ESB bus repeater module used in safety control and safety node units. It extends ESB bus connections between coupler and interface modules, ensuring reliable communication across distributed systems.

Identification

• Manufacturer: Yokogawa

• Model / Type Designation: SNT401-53

• Catalog Description: Optical ESB Bus Repeater Module

• Application: Connects ESB Bus Coupler Modules (SEC401, SEC402) or ESB Bus Interface Module (SSB401) to safety node unit (SNB10D) via ESB bus cable

Technical Characteristics

• Module Type: Optical ESB bus repeater master module

• Variants: Available with or without terminator

• Suffix Codes:

  • -5: With no explosion protection

  • 3: ISA Standard G3, operating temperature –20 to 70 °C (maintenance purpose only)

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