Yokogawa EC401-50 ESB Bus Coupler Module

Technical Specifications

Model:EC401-50

Brand:Yokogawa

Module type:ESB Extended System Bus Coupler Module

Transmission speed:128 Mbps

Max connectable node units:9 units

Max transmission distance:10 m

Interface:Single ESB bus port

Power supply:24V DC,20.4~26.4V DC

Current consumption:Max 0.5A

Suffix -50:Standard non-explosion proof version

Operating temperature:-20~+60℃

Relative humidity:5~95% non-condensing

Dimension:22mm124mm126mm

Weight:0.28kg

Certification:CE,UL

System compatibility

Designed for Yokogawa CENTUM VP DCS and ProSafe-RS safety system,installed in AFV series FCS field control station,connect FCS controller with ANB10S/ANB10D node units and FIO I/O modules,widely used in petrochemical,power,chemical refining process control.

Function

EC401-50 is ESB bus coupler module for FCS field control station.It acts as high-speed gateway between FCS CPU and FIO node units via ESB bus,transmits analog,digital and diagnostic I/O data with low latency.Supports single or dual redundant configuration.Two EC401-50 can be deployed for redundant bus,ensuring continuous communication if one coupler fails.The -50 suffix represents standard non-ex-proof model for ordinary industrial areas.

Installation

Install on FCS chassis dedicated slot,non-redundant mode occupies slot7;dual redundant mode uses slot7 and slot8.Connect ESB dedicated cable between module and node unit,configure node address via CENTUM VP engineering software.Hot swap supported under redundant configuration.

Interface

‑ESB bus field connector

‑Internal backplane bus connector

‑LED indicators for run,bus link and fault status

Circuit feature

Hardware bus watchdog,continuous self-diagnosis,galvanic isolation for ESB port,anti-electromagnetic interference,deterministic real-time I/O data transmission.

Feature

EC401-50 belongs to Yokogawa CENTUM VP FIO series ESB bus coupler module.Suffix -50 standard non-ex-proof version.Common faults:ESB cable poor contact,connector pin damage,bus communication chip failure.Confirm firmware version before replacement.

Diagnostic

Bus link loss,communication timeout or module hardware fault triggers alarm and upload diagnostic information to DCS HIS station.

Built‑in function

Realize high-speed ESB bus data transmission between FCS controller and FIO node units,transfer I/O signals for distributed control system,used for industrial DCS spare replacement.

Product Brief

EC401-50 is Yokogawa CENTUM VP / ProSafe-RS single port ESB bus coupler module,128Mbps,max 9 node units.Check FCS chassis and system firmware compatibility before ordering.ESD anti-static protection required during installation.