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3. Key Technical Specifications
The Woodward 5466-348 serves as the central processing engine within MicroNet turbine control systems, executing complex real-time governor logic, sequencing, and system diagnostics.
| Parameter | Value |
| Part Number | 5466-348 |
| Manufacturer | Woodward |
| System Compatibility | MicroNet Simplex, Dual, and TMR Systems |
| Processor Architecture | High-performance 32-bit PowerPC |
| Memory | Onboard Flash Memory (OS/GAP logic) and RAM |
| Communication Ports | RJ45 Ethernet, RS-232 / RS-422 Serial Ports |
| Backplane Interface | Standard VMEbus master interface |
| Power Consumption | 7.5 W typical (supplied via VME backplane) |
| Operating Temperature | 0°C to +55°C |
| Status Indicators | Front panel RUN, FAULT, and CPU State LEDs |
4. Product Introduction & Supply Chain Strategy
The Woodward 5466-348 is the main processor module powering Woodward MicroNet digital control systems. It executes the compiled Graphical Application Program (GAP) software that manages critical speed control, fuel metering, generator synchronization, and emergency shutoff operations across heavy industrial gas, steam, and hydro turbines.
Because the CPU board serves as the single brain of the entire control rack, a main processor failure causes a complete chassis shutdown and total loss of turbine control. Procuring this unit as a New Surplus spare provides an indispensable insurance policy against unplanned outages. Securing an uninstalled, genuine OEM unit avoids the severe 20+ week factory lead times associated with legacy control cards while bypassing the high failure rates common to second-hand refurbished components.
5466-348
5466-348
5. Installation & Configuration Guide
Critical System Warning
Replacing a main CPU module requires offline system maintenance. Pulling the primary processing unit while the system is powered will result in an immediate plant trip and potential loss of unbacked-up volatile application memory.
1.Pre-Installation & Logic Backup:Prerequisite.
Upload and archive the existing GAP application logic file, system configuration parameters, and IP settings using Woodward AppManager software. Connect a grounded ESD wrist strap before opening the MicroNet enclosure.
2.Hardware Extraction:System Power Down.
Ensure all power supplies to the MicroNet chassis are switched off and verified dead. Loosen the top and bottom captive retaining screws on the 5466-348 card. Press the upper and lower ejector handles simultaneously to disengage the board from the VME backplane pins.
3.Hardware Replacement & Seating:Physical Install.
Inspect the rear connector pins on the replacement 5466-348 card for straightness and cleanliness. Slide the module into the designated CPU slot along the chassis guide rails until the ejector levers catch, then push firmly to seat the card. Tighten top and bottom retaining screws to secure chassis ground.
4.Logic Download & Commissioning:Verification.
Apply system power and observe the boot sequence LEDs. Connect via Ethernet or serial cable using Woodward AppManager, verify the active firmware revision, and download the archived GAP application software to Flash memory. Verify communication handshakes across all slave I/O cards.
6. Firmware/Software Versions & Upgrade Notes
- Software Compatibility: Fully supported within Woodward GAP (Graphical Application Program) and AppManager environment suite.
- Firmware Dependencies: The CPU firmware version must strictly match the target operating system build compiled within your GAP application project. A mismatch will prevent the application from entering RUN mode.
- Backward Compatibility: Replaces earlier hardware revisions of the same MicroNet processor family, but requires verifying DIP switch or jumper configurations prior to insertion.
- Upgrade Warning: Never attempt a firmware flash while the CPU module is online or controlling active machinery. Interrupted firmware downloads can corrupt the onboard bootloader, requiring factory-level re-flashing.
7. Frequently Asked Questions (FAQ)
Q: Is this Woodward 5466-348 module genuinely new, or is it pulled from an active panel?
A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.
Q: Why should I buy New Surplus instead of a cheaper refurbished CPU card?
A: Refurbished CPU cards frequently suffer from invisible semiconductor aging, degraded electrolytic capacitors, and flash memory wear. A failure on the main processor brings down the entire plant, turning a small hardware saving into massive downtime losses. New Surplus delivers full original design life and zero operational risk.
Q: Does the 5466-348 card come pre-loaded with my plant’s specific application software?
A: No. Main processor cards ship from surplus inventory with base factory system firmware only. You must download your facility’s specific GAP logic application and network settings using Woodward AppManager prior to placing the module into active service.
Q: What is the primary cause of replacement failures on this CPU card?
A: The most common installation issues stem from firmware build mismatches between the CPU operating system and the compiled GAP project, as well as improper grounding leading to electrostatic discharge (ESD) damage during handling.
Q: What warranty and quality guarantees are included with this unit?
A: Each 5466-348 module is packaged in ESD-safe protective shielding and accompanied by a comprehensive QC verification report along with a 1-year full replacement warranty.
