Westinghouse 5X00226G01 I/O Interface Module – 16DI + 8DO + 4AI Mixed-Signal DCS Card for Ovation/PAS, 24V DC

Product Overview

The Westinghouse 5X00226G01 is a mixed-signal I/O interface module within Westinghouse’s Process Automation System (PAS) family—now carried forward under Emerson’s Ovation DCS heritage following the Westinghouse Process Control → Siemens → Emerson ownership chain. Designed as a “multi-type” I/O card rather than a single-signal-density slice, the Westinghouse 5X00226G01 consolidates 16 digital inputs (24 V DC, sink/source configurable), 8 digital outputs (transistor, 24 V DC, 0.5 A per channel), and 4 analog inputs (configurable for 0–10 V, ±10 V, 0–20 mA, 4–20 mA with 12-bit resolution) onto a single 150 × 150 × 40 mm circuit board that slots into an Ovation/PAS I/O rack or DIN-rail carrier depending on cabinet build.This consolidation is the card’s core value proposition: in a traditional DCS rack you would need a 16-DI card, an 8-DO card, and a 4-AI card occupying three slots and three wiring terminal blocks; the Westinghouse 5X00226G01 delivers all three signal families in one slot, reducing cabinet footprint, wiring complexity, and total cost of ownership by up to 60%. The Westinghouse 5X00226G01 communicates with the Ovation controller over the proprietary parallel backplane bus, achieving millisecond-level deterministic scan cycles essential for burner management, turbine protection, and emergency shutdown logic in power generation and heavy process applications.Built with industrial-grade components and a conformally coated PCB, the Westinghouse 5X00226G01 provides 500 V AC isolation between channels and between the field side and system logic, ensuring stable operation in electrically noisy environments. Its 24 V DC field-side power requirement (with +5 V DC drawn from the rack backplane for logic) and -20°C to +70°C operating range make the Westinghouse 5X00226G01 suitable for deployment in power plants, substations, chemical process areas, and outdoor water treatment facilities. Although Emerson has placed the Westinghouse 5X00226G01 into an end-of-life transition phase, it remains one of the most widely deployed I/O modules in active Ovation installations worldwide, with thousands of units still carrying critical protection and control signals in operational plants.

Category: FUJI

Contact Us WhatsApp / Wechat：+8618150087953
Phone：+86 18150087953
Email：sales@cxplcmro.com

Description

Technical Specifications

Parameter	Value
Product Model	5X00226G01
Manufacturer	Westinghouse (Emerson Ovation DCS heritage)
Product Type	Mixed-Signal I/O Interface Module
Digital Input Channels	16 (sink/source configurable, 24 V DC)
Digital Output Channels	8 (transistor output, 24 V DC, 0.5 A/channel max)
Analog Input Channels	4 (configurable voltage/current)
Analog Input Signal Types	0–10 V, ±10 V, 0–20 mA, 4–20 mA
Analog Input Resolution	12-bit
Isolation Voltage	500 V AC (channel-to-channel, field-to-logic)
Backplane Logic Supply	+5 V DC (from rack backplane)
Field-Side Power	24 V DC (18–30 V DC working range)
Power Consumption	< 2 W (typical)
Communication Interface	Ovation proprietary parallel backplane bus
Operating Temperature	-20°C to +70°C
Storage Temperature	-40°C to +85°C
Humidity	5% to 95% RH non-condensing
Mechanical Dimensions	150 × 150 × 40 mm (per card)
Weight	0.36 kg
Mounting	Ovation I/O rack slot / DIN-rail carrier
Hot-Swap Support	Yes (Ovation-certified live replacement)
Status Indicators	Module OK, Active/Comm, Fault LEDs; per-point LED option
Certifications	CE, UL, RoHS
Lifecycle Status	End-of-Life transition; MRO spare widely available

Main Features and Advantages

High-Integration Mixed-Signal Architecture

The defining advantage of the Westinghouse 5X00226G01 is its ability to consolidate three distinct I/O signal families into a single rack slot. By integrating 16 digital inputs, 8 digital outputs, and 4 analog inputs on one 150 × 150 × 40 mm board, the Westinghouse 5X00226G01 eliminates the need for three separate modules, three terminal blocks, and the associated inter-slot wiring. For plant engineers managing legacy Ovation cabinets, this translates into tangible savings: reduced spare inventory diversity, simplified cabinet layout, and faster commissioning. The Westinghouse 5X00226G01 effectively reduces I/O subsystem footprint by up to two-thirds compared to single-function card architectures.

Flexible Signal Configuration

Every digital input channel on the Westinghouse 5X00226G01 can be independently configured as sink (current-sinking) or source (current-sourcing) to match field device wiring conventions without requiring different hardware revisions. Similarly, the 4 analog input channels support both voltage-mode (0–10 V, ±10 V) and current-mode (0–20 mA, 4–20 mA) signals through software configuration, with 12-bit resolution delivering 4096 discrete steps for precise process measurement. This flexibility means the Westinghouse 5X00226G01 adapts to virtually any field instrument—from proximity switches and pushbuttons to 4–20 mA pressure transmitters and ±10 V position feedback sensors—without hardware modification.

Robust Electrical Isolation and Noise Immunity

The Westinghouse 5X00226G01 incorporates 500 V AC optical/galvanic isolation between individual channels and between the field side and the controller backplane logic. This isolation barrier prevents ground loops, suppresses transient surge coupling, and protects the Ovation controller from field-side fault propagation. Combined with the module’s conformally coated PCB and industrial component selection, the Westinghouse 5X00226G01 delivers reliable signal integrity even in high-electrical-noise environments such as power plant switchyards, variable frequency drive rooms, and petrochemical process areas.

Hot-Swappable for Maximum Uptime

Engineered as an Ovation-certified hot-swappable module, the Westinghouse 5X00226G01 can be removed and replaced while the DCS remains online, with no interruption to controller scanning or adjacent module operation. Front-panel status LEDs (Module OK, Active/Comm, Fault) provide at-a-glance health indication, while the Westinghouse 5X00226G01 reports per-point and per-group fault diagnostics to the Ovation engineering workstation. This capability is critical for mission-critical applications—such as boiler burner management or turbine emergency trip systems—where even a brief control interruption could compromise safety or production continuity.