woodward 5009XT with 2 120 V AC/DC PS 8262-1141

oodward 8262-1141: 5009XT Triple Redundant Turbine Control

The Woodward 8262-1141 is the flagship digital control kit for the 5009XT series, specifically designed for critical-mission steam turbine applications.

Built upon the rugged MicroNet TMR® (Triple Modular Redundant) hardware platform, the 8262-1141 provides a fault-tolerant "2-out-of-3" voting architecture.

This specific model features redundant 120 V AC/DC power supplies, making it the ideal choice for industrial facilities where the highest level of system availability and reliability is required.

Technical Parameter Table

Feature    Specification

Product Advantages and Features

TMR Reliability: The 2-out-of-3 voting logic ensures that if one CPU or I/O module fails, the system continues to operate bumplessly, providing 99.998% availability.

Dual-Power Versatility: The 8262-1141 supports both 120V AC and 120V DC inputs simultaneously. If one power source fails, the secondary takes over without interruption.

XT Control Core: Includes Woodward’s most advanced steam control algorithms, including OptiTune™ for adaptive PID response and precise extraction/admission decoupling.

Hot-Swappable Design: All major modules, including power supplies and CPUs, can be replaced while the turbine is running, minimizing maintenance downtime.

Cybersecurity: Built-in Achilles Level 1 certification ensures the control system is protected against modern network threats and unauthorized access.

Unique Product Description

The Woodward 8262-1141 is not just a governor; it is the ultimate "safety net" for high-value rotating machinery.

 While simplex or dual-redundant systems can fail if a specific component goes dark, the 5009XT’s triplex architecture creates a democratic voting system where the "majority rules." 

This prevents false trips caused by sensor noise or single-point hardware glitches.

 For power plants, refineries, and large-scale manufacturing where a turbine trip costs millions, the 8262-1141 is the gold standard for operational continuity.

Application Cases

Utility Turbo-Generators: Managing steam turbines in power plants where grid stability depends on constant, reliable frequency control.

Critical Refinery Compressors: Controlling large-scale compressor drives in environments where a sudden shutdown is hazardous or extremely costly.

Ethylene & Chemical Plants: Precise management of single extraction or admission turbines where process steam balance is vital to the chemistry.

Turbo-Expanders: Regulating high-speed expanders used in cryogenic or gas processing applications.

Installation and Maintenance

Chassis Design: The unit consists of a main TMR control chassis and a separate power supply chassis. It is designed for bulkhead mounting or integration into 19-inch racks.

HMI Integration: While it does not have a built-in screen, it is typically paired with the 8269-1073 (17-inch Touch Panel) or RemoteView software (8928-5311) for monitoring.

Wiring: Use high-quality shielded cables for all speed and analog signals. The TMR architecture requires specific terminal block (FTM) configurations to ensure proper voting.

Diagnostics: Features millisecond-accurate time-stamping for all alarms and trips, allowing engineers to perform "First-Out" analysis to determine exactly what triggered a safety event.

Related Models in the 5009XT Series