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Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5466-318 |
| Manufacturer | Woodward |
| Product Family | MicroNet Digital Control (TMR Platform) |
| Module Type | Triple Modular Redundant (TMR) Kernel Power Supply |
| Input Voltage | 24 VDC ±10% |
| Output Voltage | 5 VDC ±5% |
| Output Current | 10 A maximum |
| Compatible CPU Module | TMR040 (must be paired) |
| Installation Slot | First slot from left in kernel chassis |
| Precharge Function | Generates 5 VDC precharge for safe startup |
| Country of Origin | United States (USA) |
| Dimensions | 16 cm × 16 cm × 12 cm |
| Weight | 0.8 kg (1.76 lbs) |
| HS Code | 85389091 |
| Safety Certification | SIL-1/2/3 per IEC 61508 (with MicroNet Safety Module) |
Product Introduction
Woodward 5466-318 is a Triple Modular Redundant (TMR) Kernel Power Supply module for the MicroNet Digital Control platform. It converts 24 VDC input to a regulated 5 VDC @ 10 A output that powers all kernel section components, including the TMR040 CPU module.
This module is required in MicroNet TMR chassis and must be installed in the leftmost slot, immediately followed by the Kernel CPU module. It generates a 5 VDC precharge voltage for safe, controlled startup sequences—protecting the system from power surges. When used with the MicroNet Safety Module (MSM), the platform meets SIL-1/2/3 per IEC 61508.
- 5466-318
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No 5 VDC output at kernel | Missing 24 VDC input, blown fuse, or failed PSU | ✅ High | Measure 24 VDC at input terminals with multimeter; check fuses | Verify input power first, then replace if output is absent |
| Kernel CPU not booting | Power supply failure or wrong slot installation | ✅ High | Confirm module is in first (leftmost) slot; measure 5 VDC at backplane | Reseat module correctly and verify voltage at CPU terminals |
| Intermittent kernel resets | Marginal 5 VDC output or loose backplane contact | ✅ High | Monitor 5 VDC under load; check for voltage drops >0.25 V | Replace if voltage sags under load; tighten backplane connection |
| Precharge sequence fails | Failed precharge circuit in PSU | ✅ High | Check if 5 VDC precharge is present during startup | Replace the kernel PS module; precharge is critical for safe startup |
| System won’t enter TMR mode | Power supply mismatch or CPU module mismatch | ✅ High | Verify TMR040 CPU is installed and paired correctly | Confirm exact module pairing; TMR040 is required |
| Overheating or burning smell | Shorted load or internal PSU failure | ✅ High | Disconnect kernel load and measure for short circuit; check output current | Replace PSU and investigate shorted downstream component |
| Red fault LED on kernel | Power supply fault or redundancy mismatch | ✅ High | Check diagnostic buffer in control software for fault codes | Review fault codes and replace if PS is flagged |
Contact Woodward Turbine Help Desk at 1-970-498-3095 or [email protected] with photos and diagnostic logs for OEM support.
Frequently Asked Questions
Q: Is the Woodward 5466-318 still in production?
A: This is legacy hardware for the MicroNet TMR platform. Stock is typically new surplus or rebuilt inventory. Verify current availability with suppliers before ordering.
Q: What does this module do?
A: It provides the kernel power supply for a MicroNet TMR triple-modular-redundant chassis. It converts 24 VDC input to 5 VDC @ 10 A output that powers the CPU and all kernel modules, and generates a precharge voltage for safe startup.
Q: Can I use any CPU module with this power supply?
A: No. This module must be paired with the TMR040 CPU module. Using a different CPU will not work and may cause system failure.
Q: What slot does this module go in?
A: It must be installed in the first slot from the left in the kernel chassis. The slot immediately to its right must be dedicated to the Kernel CPU module (TMR040). Installing it in the wrong slot will prevent the system from booting.
Q: Is this module hot-swappable?
A: No. This is a critical kernel power supply in a TMR system. Power down the chassis before removal or installation to avoid damaging the backplane or other modules.
Q: What if I need a replacement for a failed unit?
A: Since this is legacy hardware, you’ll need to source new surplus or rebuilt units. Verify the part number and revision before ordering. Test videos and photos are available upon request from reputable suppliers.
Q: Why is this cheaper than buying new from the OEM?
A: This is surplus or rebuilt inventory, not current OEM production. The lower price reflects limited availability and the fact that it is legacy hardware, not a different operating principle.
Q: What should I check before ordering?
A: Confirm the exact part number (5466-318), verify your chassis is MicroNet TMR, ensure you have a TMR040 CPU module, and check your GAP application compatibility. Also verify the module condition (new surplus vs rebuilt) and warranty terms.
