Description
The Emerson 5X00226G3 (also referenced as 5X00226G03) is a high-performance I/O interface controller module developed by Emerson Automation Solutions, formerly manufactured under the Westinghouse Ovation™ brand. This versatile module serves as a critical component in the Ovation™ Distributed Control System (DCS) platform, providing seamless communication between field devices and the control network.
Depending on configuration, the Emerson 5X00226G3 functions as a 16-channel digital input module for switchgear status monitoring, or as a robust I/O interface controller supporting multiple module types including analog I/O, RTD input, and communication modules. Its industrial-grade design ensures reliable operation in the most demanding environments, making it the backbone of countless power generation, oil & gas, and chemical processing facilities worldwide.
Application Scenarios
In a 1000MW ultra-supercritical coal-fired power plant, the turbine protection system and boiler interlock logic depend on instantaneous, accurate feedback from hundreds of field switches. When a critical valve position sensor failed to communicate with the DCS, the plant’s control system risked a costly turbine trip. The maintenance team traced the fault to a degraded I/O channel on an outdated controller. Replacing the unit with a fully tested Emerson 5X00226G3 module restored the 16-channel input capacity within 30 minutes, with each channel providing optically isolated status monitoring for valve limit switches, pump run signals, and breaker positions. The plant’s chief control engineer noted: “The 5X00226G3 is the heartbeat of our safety interlock system. Keeping a spare on the shelf is non-negotiable for us.”
Another typical deployment sees the Emerson 5X00226G3 configured as a Modbus TCP/IP gateway, aggregating data from 4 modular slots that can be populated with digital input, digital output, analog input, analog output, or RS-232/RS-485 communication cards. This flexibility allows system integrators to adapt the 5X00226G3 to evolving process requirements without redesigning the entire control cabinet.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | Emerson 5X00226G3 / 5X00226G03 |
| Manufacturer | Emerson Automation Solutions (formerly Westinghouse) |
| Product Category | Ovation DCS I/O Interface Controller / Digital Input Module |
| Input Channels | 16-channel digital inputs (switch/DI configuration) |
| Input Type | 24 VDC wet contact or dry contact with internal excitation |
| On-State Voltage | ≥15 VDC; OFF-State ≤5 VDC |
| Isolation | Optical isolation: 1500 Vrms (field side to logic side) |
| Power Consumption | <2W typical; module-specific |
| Operating Temperature | -40°C to +70°C (extended industrial range) |
| Storage Temperature | -40°C to +85°C |
| Mounting Type | DIN rail mountable; Ovation I/O chassis |
| Communication Protocol | Modbus TCP/IP; Ovation high-speed backplane bus |
| Dimensions | Approx. 150 mm x 150 mm x 40–70 mm |
| Diagnostics | 16 channel status LEDs + system OK/FAULT indicators; Open Wire Detection |
