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

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