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Product Description
The 8408-921 (STExcite 2010) from Woodward is a single-channel ignition driver designed for gas turbine combustion systems. This exciter module generates high-energy ignition pulses required for initiating combustion during turbine startup and for maintaining ignition reliability in demanding industrial environments.
Built on Woodward’s STExcite platform, the module integrates digital signal processing (DSP) diagnostics and self-monitoring functions. These capabilities allow operators and maintenance engineers to monitor ignition performance, detect faults early, and maintain safe turbine startup sequences.
The 8408-921 supports a 103–127 V AC power input and operates at standard industrial frequencies of 50/60 Hz. Its dual communication ports allow integration with turbine control systems for diagnostics and status reporting. The rugged design ensures dependable operation in high-temperature, vibration-prone turbine installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Woodward |
| Model | 8408-921 (STExcite 2010) |
| Product Type | Gas Turbine Ignition Module / Exciter Driver |
| Ignition Channel | Single Channel |
| Input Voltage | 103–127 V AC |
| Frequency | 50 / 60 Hz |
| Ignition Output | High-energy pulse for turbine combustor ignition |
| Diagnostic System | DSP-based diagnostics with self-test capability |
| Communication | Dual communication ports |
| Application | Industrial gas turbine ignition systems |
| Mounting | Turbine control cabinet / ignition system rack |
| Operating Environment | Industrial turbine environments with vibration and heat exposure |
Key Functional Characteristics
• High-energy ignition output designed for reliable turbine combustor startup
• DSP-based monitoring enables early fault detection and system diagnostics
• Integrated self-test routines verify module readiness before turbine start
• Dual port communication supports integration with turbine control systems
• Industrial-grade construction suitable for power generation and process plants
Typical Applications
The 8408-921 STExcite 2010 ignition driver is commonly deployed in gas turbine ignition systems used in:
• Power generation turbines
• Industrial cogeneration systems
• Oil and gas turbine compressors
• Pipeline gas turbine drivers
• Process industry turbine installations
FAQ
What is the primary function of the 8408-921 ignition module?
It generates high-voltage ignition pulses used to ignite the fuel-air mixture in gas turbine combustion chambers during startup sequences.
Does this module include diagnostic capability?
Yes. The STExcite platform incorporates DSP-based diagnostics that provide fault detection, internal monitoring, and operational status feedback.
What input power does the unit require?
The module operates on a standard 103–127 V AC supply at 50 or 60 Hz, making it compatible with common turbine control power systems.
Can the module communicate with turbine control systems?
Yes. Dual communication ports allow status and diagnostic data to be exchanged with supervisory turbine controllers.
