Product Overview

The Westinghouse 5X00241G02​ is a high-reliability 24 V DC power supply module purpose-built for the Emerson OVATION Distributed Control System (DCS), formerly developed and deployed under the Westinghouse Automation banner. Designed to deliver clean, regulated 24 V DC power at up to 10 A (240 W), the 5X00241G02​ serves as the primary or redundant power source for OVATION I/O modules, controllers, communication processors, and termination assemblies within a DCS cabinet. Its role is mission-critical: supplying stable, noise-immune power that ensures deterministic control execution in power generation, water treatment, oil & gas, and heavy process industries.Electrically, the Westinghouse 5X00241G02​ accepts a wide-range AC input (typically 85–264 V AC, 47–63 Hz) or DC input (88–370 V DC, depending on configuration), converting it to a tightly regulated 24 V DC output with ±1 % voltage accuracy and less than 50 mV peak-to-peak ripple. The module incorporates active power-factor correction (PFC), overvoltage protection, overcurrent limiting, and thermal shutdown, ensuring safe operation under abnormal grid or load conditions. A key architectural advantage of the 5X00241G02​ is its native support for N+1 redundancy: when two modules are installed side-by-side in an OVATION rack, they automatically load-share and provide seamless failover—if one unit fails or is removed, the other instantly carries the full load without interrupting control processes.Physically, the Westinghouse 5X00241G02​ is housed in a rugged, vented metal enclosure designed for DIN-rail or rack mounting within OVATION cabinets. Front-panel LEDs provide real-time status indication for input power, output health, and redundancy state, enabling technicians to quickly diagnose issues without software tools. The module communicates indirectly with the OVATION system through power-health monitoring embedded in the controller firmware, allowing alarms and trends to be captured in the HMI. For plants operating around the clock, the 5X00241G02​ represents a cornerstone of availability—quietly delivering stable 24 V DC power that the rest of the DCS depends on but rarely notices until it fails.

Technical Specifications

Main Features and Advantages

Redundant, hot-swappable architecture.​ The Westinghouse 5X00241G02​ is engineered for high-availability DCS environments where unplanned shutdowns are unacceptable. Two modules can operate in parallel, automatically sharing load and providing instantaneous failover if one unit fails or is removed for service. Because the 5X00241G02​ is hot-swappable, technicians can replace a faulty power supply without powering down the OVATION rack—a critical advantage in nuclear, fossil, and continuous-process plants where a single controller outage can cascade into a unit trip.Wide-range AC/DC input with PFC.​ Unlike narrow-input industrial supplies, the Westinghouse 5X00241G02​ accepts a global range of AC mains (85–264 V AC) and, on DC-input variants, 88–370 V DC. This makes it suitable for plants with unstable grids, generator-backed supplies, or mixed-voltage control rooms. Active power-factor correction minimizes reactive power draw and harmonics, reducing stress on upstream UPS and distribution gear.Tight regulation and low noise.​ The 24 V DC output is maintained within ±1 % across load steps, ensuring that sensitive OVATION I/O modules—particularly analog input cards—do not experience drift or false readings due to supply fluctuation. Ripple and noise are kept below 50 mVpp, protecting digital logic from glitches that could trigger spurious trips or communication errors.Comprehensive protection suite.​ The 5X00241G02​ includes overvoltage protection (OVP), overcurrent limiting (OCP), overtemperature shutdown, and short-circuit immunity. In the event of a downstream I/O fault drawing excessive current, the module safely limits output rather than failing catastrophically. This containment prevents a single I/O failure from taking down the entire rack’s power domain.Diagnostic visibility.​ Front-panel LEDs provide immediate visual status: input presence, output regulation, and redundancy health. These indicators allow operators and technicians to assess power-system health at a glance, without connecting laptops or entering control software. Combined with OVATION firmware-level power monitoring, the Westinghouse 5X00241G02​ enables proactive maintenance—identifying degrading supplies before they fail.Proven DCS pedigree.​ As an OEM-specified power supply for OVATION systems, the 5X00241G02​ is qualified through Emerson’s rigorous environmental and EMC testing. It is not a generic industrial PSU adapted to DCS duty; it is purpose-built for the electrical noise, vibration, and thermal profiles of control cabinets in power plants and heavy industry. This pedigree translates into predictable lifespan and predictable failure modes—critical for lifecycle planning and spare-parts strategies.