Description
WOODWARD 5466-409 | MicroNet Pentium CPU Module
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 5466-409 |
| Manufacturer | Woodward |
| Product Family | MicroNet Digital Control |
| Product Type | Pentium CPU Module |
| Processor | Pentium, 233 MHz |
| RAM | 64 MB |
| System Architecture | Simplex |
| Chassis Position | Expansion chassis/rack |
| Ethernet | 1 port |
| Serial Communication | Dual RS-232 |
| Operating Temperature | 0 to 50°C |
| Application/Service Tool | AppManager |
| Associated Manuals | 26166V1, 26166V2, 26166V3 |
| Status | Legacy / discontinued |
The 233 MHz processor, 64 MB memory, simplex architecture, Ethernet/RS-232 interfaces, and 0–50°C operating range are consistently reported across the available 5466-409 references.
Product Introduction
The Woodward 5466-409 is a Pentium CPU module for the legacy MicroNet Digital Control platform. Its job is to provide the computing environment in which the MicroNet application executes, while Ethernet and serial interfaces support engineering, service, and system communications. The module uses a 233 MHz Pentium processor and 64 MB of RAM.
The important engineering detail is its simplex-only architecture. The 5466-409 is installed in an expansion rack and is associated with a Main Transceiver and Remote Transceiver arrangement. AppManager is used for application startup and loading through Ethernet.
5466-409
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
The 5466-409 is now a legacy processor, so the primary maintenance problem is not simply finding a board with the correct part number. The replacement must retain the expected MicroNet application environment, chassis arrangement, communication configuration, and application data.
Typical Applications
- Turbine control systems — legacy MicroNet-based steam and gas turbine installations.
- Generator control — processor platform for installed MicroNet control applications.
- Industrial rotating equipment — applications where an existing MicroNet controller remains in service.
- Legacy control system maintenance — replacement of failed CPU hardware without immediately changing the entire control architecture.
Technical Pitfalls to Avoid
- Do not substitute a generic industrial CPU.
The 5466-409 is part of a specific MicroNet architecture. Processor speed alone does not establish compatibility. - Confirm simplex architecture before ordering.
Available documentation identifies the 5466-409 as a simplex CPU and places it in the expansion rack. The associated Main XCVR/Remote XCVR arrangement also needs to be checked. - Preserve the application environment.
Before removing the existing CPU, record the MicroNet application, software revision, communication configuration, chassis position, and service-tool requirements. A physically correct CPU without the expected application environment can still leave the turbine unavailable for operation. - Do not trust incorrect electrical specifications from generic listings.
Several current pages incorrectly describe 5466-409 as a power supply, fuel actuator module, or 220 V power board. Those descriptions conflict with the MicroNet CPU identification and should not be used for engineering selection.
Related Products
- 5466-407 — related MicroNet Pentium CPU configuration; verify the exact operating-system/software configuration before considering substitution.
- 5466-411 — MicroNet Ethernet-related hardware; not a replacement for the 5466-409 CPU.
- 5466-419 — another MicroNet/NetCon Pentium CPU configuration with different memory and feature configuration.
- 5466-258 — MicroNet/Vertex-Pro 48/24 discrete I/O module; performs field I/O rather than CPU processing.
- 5466-318 — MicroNet TMR kernel power-supply module; unrelated to the CPU function.
- MicroNet Main Transceiver (XCVR) — associated with expansion-rack CPU architecture.
- MicroNet Remote Transceiver (XCVR) — required in the documented 5466-409 expansion configuration.
- MicroNet Digital Control — system family containing the 5466-409 processor platform.
Procurement Note
For a 5466-409 replacement, specify the complete part number and verify 233 MHz Pentium / 64 MB configuration, simplex architecture, expansion-rack position, XCVR arrangement, application software, and installed MicroNet revision. If the existing controller is still running, capture the application and configuration before removing the processor.
The part is documented as discontinued/obsolete, so condition matters. For legacy turbine controls, a tested unit with documented hardware condition and a known-good application/configuration is materially different from an unverified board simply carrying the correct label.
