Westinghouse 5X00 Modules

Technical Dossier

Product Details And Specifications

Westinghouse 5X00 Series: Comprehensive Module Range and Technical Overview

The Westinghouse 5X00 series represents the core I/O and controller module family deployed within the WDPF (Westinghouse Distributed Processing Family) and its successor, the Ovation DCS platform. These modules have accumulated decades of installed base across global heavy industry sectors including petrochemical refineries, nuclear power generation facilities, fossil fuel power plants, and large-scale chemical processing operations. The 5X00 designation covers a broad functional range: analog input/output, digital input/output, controller processors, communication adapters, and power supply assemblies. Due to the long operational lifecycles typical of DCS infrastructure — often 20 to 30 years — the 5X00 series remains in active service at hundreds of facilities worldwide, creating sustained demand for both new-old-stock and refurbished spare parts.

The Evolution of 5X00 Architecture

The 5X00 module family originated in the late 1980s under Westinghouse Electric Corporation's process control division. Following the acquisition of Westinghouse's power generation and automation assets by CBS Corporation and subsequent divestiture, the WDPF platform was maintained and evolved by Emerson Electric under the Ovation brand. The 5X00 hardware architecture is built around a proprietary backplane bus that supports hot-swap module replacement in redundant configurations. Early revisions (G01 suffix) established the baseline electrical and firmware specifications; later G02, G03, and G04 revisions introduced enhanced noise immunity, expanded channel counts, and revised EEPROM configurations for compatibility with Ovation controller firmware versions 3.x and above. Backward compatibility between G-suffix revisions is module-type dependent and must be verified against the applicable Ovation hardware compatibility matrix before substitution. The transition from WDPF to Ovation did not require wholesale hardware replacement — the 5X00 I/O modules retained physical and electrical compatibility, making the installed base highly persistent. As of 2026, the 5X00 series is classified as mature/end-of-life by Emerson, with no new production runs. All procurement is sourced from authorized surplus inventory, refurbished units, or decommissioned plant stock.

5X00 Full Catalog & Functionalities (SKU List)

The following part numbers represent verified, commonly traded 5X00 series modules. Each entry includes the primary functional classification.

Analog Input (AI) Modules

• 5X00594G01: 16-channel analog input module, 4–20 mA / 1–5 V, HART-compatible, for Ovation I/O cabinet
• 5X00226G01: 8-channel analog input module, thermocouple/RTD input, cold junction compensation integrated
• 5X00226G02: 8-channel analog input module, thermocouple/RTD, revised G02 firmware for Ovation 3.x compatibility
• 5X00241G01: 16-channel analog input, voltage/current configurable per channel, single-ended
• 5X00241G02: 16-channel analog input, differential input configuration, enhanced EMI shielding

Analog Output (AO) Modules

• 5X00109G01: 8-channel analog output module, 4–20 mA, loop-powered, 750 Ω max load
• 5X00119G01: 4-channel analog output, high-resolution 16-bit DAC, for precision valve control applications

Digital Input (DI) Modules

• 5X00105G01: 32-channel digital input module, 24 VDC, optically isolated, for contact/proximity sensor interfacing
• 5X00106G01: 16-channel digital input, 120 VAC, for field device status monitoring in high-voltage environments
• 5X00070G01: 32-channel digital input, 48 VDC, wet contact, standard density I/O
• 5X00070G04: 32-channel digital input, 48 VDC, G04 revision with updated optical isolator specification

Digital Output (DO) Modules

• 5X00058G01: 16-channel digital output, relay contact, 2 A per channel, for solenoid and alarm annunciator control
• 5X00063G01: 32-channel digital output, 24 VDC solid-state, 0.5 A per channel, high-density configuration

Controller / Processor Modules

• 5X00300G01: Ovation controller module, primary CPU, dual-redundancy capable, Ethernet I/O bus interface
• 5X00301G01: Ovation controller module, redundant pair partner for 5X00300G01, synchronized hot-standby operation

Communication & Power

• 5X00273G01: Remote I/O communication adapter, supports Ovation remote node expansion up to 32 I/O modules per node

Sourcing Hard-to-Find & Obsolete 5X00 Parts

With Emerson having formally discontinued new production of the 5X00 module range, procurement teams at power utilities and process plants face increasing lead times and price volatility when sourcing replacement units through OEM channels. DriveKNMS maintains a dedicated inventory program for end-of-life Westinghouse and Ovation hardware. Stock is sourced from decommissioned plant equipment, authorized surplus distributors, and controlled refurbishment pipelines. All units are catalogued by part number, G-suffix revision, and firmware version where applicable. For facilities operating under long-term service agreements or requiring multi-year spare parts coverage, DriveKNMS can provide blanket order arrangements and consignment stock programs. Inquiries for specific 5X00 part numbers, including low-volume single-unit requirements and high-volume plant shutdown kits, are handled directly by the technical sales team.

Quality Control for the 5X00 Range

The 5X00 module family presents specific test challenges due to its proprietary backplane communication protocol and mixed analog/digital signal architecture. DriveKNMS applies a structured test protocol to all 5X00 units prior to shipment. Analog input modules (including the 5X00594G01) are bench-tested using calibrated current/voltage sources across all channels, with linearity and offset error verified against factory specification tolerances. Digital I/O modules are tested for channel isolation integrity and switching response time. Controller modules (5X00300G01, 5X00301G01) undergo firmware version verification and memory integrity checks. Backplane connector pins are inspected under magnification for corrosion, mechanical deformation, and gold plating wear. Modules that pass full functional test are issued a DriveKNMS test certificate with date, technician ID, and channel-level test data. Units that fail functional test but are repairable are routed to component-level repair before re-test. No module is shipped without a passing test record on file.