Woodward 5453-279 MICRONET TMR 24/12

Woodward 5453-279 MICRONET TMR 24/12

Product Introduction
The Woodward 5453-279 is a critical safety and control module within the MicroNet TMR (Triple Modular Redundancy) platform. Designed for mission-critical applications, it provides fault-tolerant processing and voting logic to ensure continuous, safe operation of turbines and compressors even in the event of internal hardware failures.

Request Quote
Category:

Description

Woodward 5453-279 MICRONET TMR 24/12

Technical Specifications

  • Part Number: 5453-279.
  • System Architecture: Triple Modular Redundancy (TMR).
  • Power Requirement: 24/12 Vdc dual-voltage input capability.
  • Safety Integrity: Certified for SIL 3 safety instrumented functions.

Functional Features

  • Fault Tolerance: Utilizes three independent processing channels with 2oo3 (two-out-of-three) voting logic to tolerate single-point failures without tripping.
  • Integrated Safety & Control: Combines emergency shutdown (ESD) and continuous process control in a single hardware platform.
  • Advanced Diagnostics: Continuously self-tests all internal channels and I/O paths to detect and isolate faults instantly.

Application Scenarios
Mandatory for large gas and steam turbines, critical compressors, and petrochemical processes where unplanned downtime is prohibitively expensive and safety is paramount.

Performance Parameters

  • Voting Speed: Sub-millisecond voting logic execution to ensure rapid safety response.
  • Reliability: Exceptional Mean Time Between Dangerous Failures (MTTFd) due to redundant architecture.

Material Composition
Industrial-grade microprocessors and high-reliability memory modules, housed in a ruggedized chassis designed for high-vibration environments.

Structural Characteristics

  • Modular Design: Plugs into the MicroNet TMR backplane for easy replacement and system expansion.
  • Status Indicators: Front-panel LEDs indicate channel health, voting status, and active alarms.

Working Principle
Three identical processors execute the same logic independently. A dedicated voter compares the outputs of all three channels. If one channel deviates due to a fault, the voter isolates it and continues safe operation using the two healthy channels.

Installation Requirements

  • Backplane Compatibility: Must be installed in a designated MicroNet TMR rack with proper backplane termination.
  • Power Supply: Ensure both 24 Vdc and 12 Vdc supplies are stable and properly fused.

Usage Precautions

  • Firmware Matching: All TMR modules in a single rack must run the exact same firmware revision to prevent voting mismatches.
  • Replacement Protocol: Follow strict hot-swap procedures if replacing a module while the system is energized.

Related products