The Woodward 5501-469 is a high-speed CPU module designed specifically for the NetCon control system platform. It serves as the primary processing heart, executing complex control algorithms for large-scale turbine systems, power generation plants, and industrial engine applications. Engineered for mission-critical reliability, this module manages high-speed I/O processing and sophisticated communication protocols. The 5501-469 is known for its ability to handle deterministic real-time tasks, ensuring that control loops are executed with microsecond precision to maintain the stability and safety of the connected machinery.
Product Specifications (Datasheet)
Dimensions: 255 mm x 180 mm x 40 mm Weight: 1.1 kg Country of Origin: USA Processor Type: High-speed industrial microprocessor Memory: Integrated Flash for application logic and RAM for runtime variables Supply Voltage: 5V DC (derived from NetCon power supply backplane) Communication Ports: RS-232, RS-422/485, and Ethernet (depending on configuration) Backplane Interface: VME-based proprietary NetCon bus Operating Temperature: -20°C to +70°C Diagnostics: Onboard LED status array for CPU health and bus activity
Application Fields
The WOODWARD 5501-469 is utilized in large-scale industrial control environments, including:
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Gas Turbine Control: Managing fuel metering, ignition, and sequencing for industrial power turbines.
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Steam Turbine Governors: Executing precise speed and load control logic for utility-scale generators.
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Hydroelectric Control: Coordinating wicket gate positioning and frequency regulation.
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Large Engine Management: Governing fuel injection and ignition for massive marine and stationary diesel engines.
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Compressor Station Automation: Integrating multiple control loops for large-scale natural gas pipeline compression.
Product Instructions
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Installation: Ensure the NetCon chassis is powered down. Insert the module into the dedicated CPU slot (typically Slot 1) and secure the top and bottom retaining screws to ensure proper grounding to the chassis.
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Firmware Verification: Before commissioning, verify that the firmware version pre-loaded on the 5501-469 matches the version required by your application software (GAP or NetSim).
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Configuration: Connect a service PC to the module’s serial or Ethernet port. Use Woodward’s proprietary software to download the application code and configure network parameters.
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Monitoring: During operation, observe the “CPU OK” and “RUN” LEDs. A solid green “RUN” light indicates the module is successfully executing the control program.
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Battery Replacement: If the module utilizes a battery-backed RAM, follow the maintenance schedule to replace the lithium cell while the system is powered (if supported) to avoid losing volatile application data.
Q&A – Frequently Asked Questions
Q: Can this CPU module be used in redundant configurations? A: Yes, the NetCon architecture often uses dual 5501-469 modules in a “Master/Standby” arrangement to ensure 100% uptime in the event of a hardware fault.
Q: How do I troubleshoot a “Bus Error” indicated on the module? A: A bus error often indicates a communication failure with an I/O module in the rack. Check for loose modules or faulty ribbon cables within the NetCon chassis.
Q: Is the 5501-469 compatible with all NetCon chassis types? A: It is designed for standard NetCon 5000 and similar high-density racks. Always cross-reference your specific backplane part number with the module’s technical manual.
Q: What programming language does this module use? A: It primarily executes code generated by Woodward’s Graphical Application Programmer (GAP) or C++ based control libraries.
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