Description
Product Introduction
The Woodward 5466-348 is a high-performance CPU processing board built for Woodward MicroNet and MicroNet TMR control systems. Designed specifically for mission-critical turbomachinery execution—including steam turbines, industrial gas turbines, and large compressor trains—it delivers the processing power required for real-time speed control, surge control algorithms, and complex safety logic.
Unlike off-the-shelf industrial PCs or standard general-automation PLCs, the 5466-348 executes deterministic control loops down to sub-millisecond task intervals across the MicroNet VME-based backplane. This guarantees that critical fuel metering valve adjustments and trip responses occur without jitter or execution delays under heavy system loads.
Key Technical Specifications
| Parameter | Specification |
| Compatible Platform | MicroNet Simplex & MicroNet TMR Chassis |
| Processor Type | High-Speed Embedded RISC / PowerPC Architecture |
| Communication Interfaces | Dual 10/100Base-T Ethernet, RS-232/RS-422/RS-485 Serial Ports |
| Operating System | VxWorks Real-Time Operating System (RTOS) |
| Backplane Interface | High-speed VMEbus standard |
| Power Consumption | Sourced via MicroNet chassis power supply module |
| Operating Temperature | -40°C to +70°C ambient |
| Mounting | Dedicated MicroNet CPU slot (Front ejector handles) |
Application Scenarios & The “Trench” Experience
When an offshore production platform suffers an unannounced main processor lockup on its primary turbine generator, power drops instantly. In one field incident at a remote cogeneration plant, an aging CPU card began throwing thermal memory faults, causing intermittent system resets that tripped the boiler feed pumps. Swapping in a pre-tested 5466-348 module restored determinism, eliminated the random reboots, and got the plant back online before thermal stress damaged the main steam header.
- Heavy-Duty Gas Turbine Speed Control – Running precise fuel governor algorithms and overspeed protection loops in high-ambient environments.
- Steam Turbine Extraction & Generator Paralleling – Processing complex multi-variable control matrices for pressure extraction and grid synchronization via Woodward GAP software.
- Large Petrochemical Compressor Trains – Executing high-speed anti-surge control loops where processing lag can lead to destructive impeller stall conditions.
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test them on actual Woodward MicroNet chassis racks. Every 5466-348 CPU module goes through our rigorous 5-step bench verification protocol before dispatch:
- Inbound & Backplane Pin Audit: Detailed physical inspection of the multi-pin VME backplane connectors to ensure zero bent, recessed, or oxidized contacts.
- Chassis Power-On & Boot Audit: The CPU is inserted into a live MicroNet chassis to verify RTOS initialization, memory self-tests, and front-panel LED status indicators.
- Communication Port Sweep: Ethernet and serial ports are stress-tested with continuous data handshakes to verify throughput and link stability.
- GAP Application Loading & Task Loop Test: We flash a heavy test program via Woodward GAP software to evaluate real-time deterministic execution, memory usage, and thermal performance under full load.
- ESD-Safe Preparation: Application memory is cleared to factory defaults, card edge connectors are cleaned, and the unit is packaged in a static-shielding metallic bag.
5466-348
5466-348
The Veteran’s Tech Trap Guide (Crucial Value-Add)
- ⚠️ Match Your Firmware & Kernel Revisions: Before inserting the replacement 5466-348 into a live system, check the exact firmware, boot kernel, and VxWorks versions using Woodward Coder or ToolKit. A mismatch between the CPU firmware and your GAP application program can cause initialization failures or CPU hand-off faults in TMR racks.
- ❗ Protect the VME Backplane Connector: The multi-pin connector on the rear of the 5466-348 requires precise alignment. Gently slide the card along the chassis card guides until the connector meets the backplane, then lock down the top and bottom ejector levers simultaneously. Never force the levers—forcing a misaligned card will crush backplane pins!
- ⚠️ Back Up Your Application Code First: The replacement CPU module will ship empty or with default factory firmware. Always upload and back up your running GAP application code, network IP settings, and tunable values from the old CPU before pulling it from the rack.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the Woodward 5466-348 CPU module hot-swappable?
A: In a MicroNet Simplex system, no—removing the CPU will immediately shut down the system. In a MicroNet TMR system, individual CPU channels can be serviced, but you must strictly follow Woodward’s official TMR CPU replacement protocol to avoid dropping the active control vote.
Q: How do I load my application program onto the 5466-348?
A: Program loading and parameter tuning are done over the Ethernet or serial service port using Woodward’s GAP (Graphical Application Program) development environment and ToolKit software.
Q: Can I use this card in place of older 5466-series CPU modules?
A: In many cases yes, but compatibility depends on your MicroNet motherboard revision, software version, and chassis backplane type. Verify software compatibility with your original system documentation before upgrading.
Q: What condition are these 5466-348 units in?
A: We stock both factory-sealed New Surplus inventory and fully reconditioned, bench-tested surplus modules. Every unit undergoes live chassis testing on real Woodward hardware before shipping.
Q: What is the warranty coverage on this CPU card?
A: Every 5466-348 module comes backed by a comprehensive 12-month operational warranty from the date of purchase. If the card fails under normal field conditions, we replace it immediately.
Start Chat
