Products Description
Yokogawa EC401-10 CENTUM VP ESB Bus Coupler Module in stock
Yokogawa EC401-10 is an ESB bus coupler module for Yokogawa CENTUM VP DCS system. It serves as the communication bridge between FCS field control station and FIO remote I/O nodes, responsible for high-speed real-time data transmission over ESB bus.

This module supports redundant ESB bus connection and hot-swappable installation. It provides fault diagnosis and status monitoring for bus communication, and can be installed in AFV10D dual redundant field control station racks for continuous process control.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | Yokogawa |
| 2 | Model | EC401-10 |
| 3 | Module Type | ESB Bus Coupler Communication Module |
| 4 | Compatible System | CENTUM VP DCS, AFV10S / AFV10D FCS rack |
| 5 | Bus Interface | Dual ESB bus ports for redundancy |
| 6 | Feature | Hot-swappable, built-in communication diagnosis |
| 7 | Operating Temperature | 0℃ ~ +55℃ |
Core Functions
| No. | Function Description |
|---|---|
| 1 | High-speed data exchange between FCS controller and FIO remote I/O modules via ESB bus |
| 2 | Dual ESB bus redundant transmission, automatic switch when one bus fails |
| 3 | Supports hot swapping, module replacement without shutting down the DCS system |
| 4 | Real-time communication fault detection and status LED indication |
| 5 | Coordinate I/O data polling, alarm signal transmission and timestamp synchronization |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Yokogawa CENTUM VP FCS rack ESB bus connection for FIO remote I/O |
| 2 | Chemical, petrochemical plant distributed process control cabinet |
| 3 | Power plant, pulp & paper factory DCS remote I/O communication system |
| 4 | Oil & gas, pharmaceutical continuous production control system |
| 5 | Yokogawa CENTUM VP spare parts replacement and DCS reconstruction |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is Yokogawa EC401-10? A:It is ESB bus coupler module for CENTUM VP DCS, used to connect FCS and FIO remote I/O nodes. |
| 2 | Q:Does EC401-10 support hot swap? A:Yes, the module can be replaced online without stopping the running control system. |
| 3 | Q:What is ESB bus? A:ESB is Yokogawa’s dedicated high-speed serial bus for communication between FCS and FIO I/O units. |