Yokogawa SB401-10 Bus Interface Module

Core Performance & Industrial Application

The Yokogawa SB401-10 (S1) is an ESB bus interface slave module used inside the ANB10S/ANB10D FIO ESB bus node unit.

It communicates analog and contact I/O signals between field I/O modules and the Field Control Unit (FCU) over the ESB bus.

It supports dual-redundant configuration with two SB401 slave modules for high-availability CENTUM control systems.

It mounts in the dedicated node-unit slot and pairs with the ESB bus coupler on the FCU side.

It is a legacy spare module widely kept for CENTUM V / VP FIO node unit maintenance.

Technical Specifications

▶ Product type: ESB bus interface slave module

▶ Brand: Yokogawa

▶ Model: SB401-10 (Suffix S1)

▶ System: CENTUM FIO / ESB bus node unit (ANB10 series)

▶ Function: Analog and contact I/O signal communication slave

▶ Transmission speed: 128 Mbps (I/O module data)

▶ Bus distance: Max. 10 m ESB bus

▶ Current consumption: Approx. 0.5 A

▶ Weight: Approx. 0.24 kg

▶ Mounting: Node-unit slot installation

▶ Redundancy: Dual slave module supported

▶ Feature: ESB bus coupling, redundant configuration support

▶ Note: Confirm suffix revision and paired FCU/coupler module before ordering

Industry Applications

Applied in CENTUM DCS FIO node units, chemical and power plant control system spare replacement.

Note: Confirm suffix code, node unit model and ESB coupler (EC401/EC402) pairing before ordering