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WOODWARD 5466-257 – High Density Analog I/O Module
Product Overview
The WOODWARD 5466-257 is a High Density Analog I/O module designed for Woodward MicroNet and NetCon 5000 control architectures. Woodward documentation identifies it specifically as a TMR High Density Analog I/O module with a 24/8 configuration, providing 24 analog inputs and 8 analog outputs for applications requiring high channel density within a redundant turbine control system.
The module is used to acquire continuous process and machine signals and provide analog control outputs to associated field equipment. It can be installed in MicroNet TMR systems and is documented as an optional module in Woodward 5009FT control-system configurations. For maintenance teams, the key consideration is not simply physical interchangeability but matching the I/O signal type, TMR architecture, FTM wiring, CPU generation, and application configuration.
Technical Specifications — 5466-257
| Parameter | Value |
|---|---|
| Product Model | 5466-257 |
| Manufacturer | Woodward |
| Product Type | High Density Analog I/O Module |
| Application | MicroNet / NetCon 5000 control systems |
| Architecture | TMR |
| I/O Configuration | 24 Analog Inputs / 8 Analog Outputs |
| Analog Inputs | 24 × 0–5 V |
| Analog Outputs | 8 × 4–20 mA |
| Typical FTM | 5501-372 |
| Typical Cable | 5417-172 / 5417-173 |
| Mounting | MicroNet control chassis |
| Operating Temperature | -20 to 55 °C |
| Humidity | Up to 95% non-condensing |
| Indicators | Fault LED |
| Dimensions | Approx. 9 × 1 × 10 in |
| Weight | Approx. 0.7 kg, depending on configuration |
| Compliance | Refer to applicable Woodward system documentation |
Woodward’s product-change documentation confirms that the legacy module uses 24 analog inputs at 0–5 V and 8 analog outputs at 4–20 mA for TMR applications.
Woodward 5466-1115
Key Features and Benefits — 5466-257
- High-density analog signal acquisition for turbine and engine control applications.
- 24 analog input channels support continuous process-variable monitoring.
- 8 analog outputs provide 4–20 mA control signals to compatible field devices.
- Designed for TMR architectures where signal availability and voting are important.
- Compatible with the 5501-372 field termination module in documented MicroNet configurations.
- Front-panel fault indication assists with maintenance diagnostics.
- Suitable for installed-base maintenance where the original MicroNet hardware must be retained.
The module appears in Woodward’s 5009FT MicroNet TMR system documentation in the I/O positions associated with the high-density analog subsystem.
Related Models
5466-5027: Updated High Density Analog I/O module that Woodward identifies as a backward-compatible replacement for 5466-257 in applicable systems. Application engineering should confirm whether the different filtering characteristics on channels 23/24 are acceptable.
5466-5025: Updated SmartPlus High Density Analog I/O module intended for newer MicroNet Plus and MicroNet TMR configurations. Coder-version compatibility must be checked before substitution.
5466-315: High Density Analog I/O module with a different signal configuration, providing 24 analog inputs and 8 analog outputs for simplex applications. It should not be treated as a direct functional equivalent without checking the application.
5466-253: TMR Analog Combo module used for combined analog I/O functions within the Woodward MicroNet family.
WOODWARD 5466-257
Installation and Maintenance — 5466-257
Before installation, verify the chassis type, CPU generation, module position, FTM part number, field wiring, and application configuration. Record the existing module’s revision and configuration before removal.
During maintenance, inspect the edge connector and mating interfaces for contamination, corrosion, or mechanical damage. After installation, verify all expected analog input values and output loops. Where the module participates in a TMR system, confirm that all three redundant paths are correctly recognized by the control application.
Woodward states that the legacy High Density Analog modules were replaced by newer SmartPlus-based modules and that replacement selection depends on the installed controller and Coder version.
Product Warranty — 5466-257
Warranty coverage depends on the supplier, product condition, and purchase agreement. For a critical turbine-control spare, request serial-number traceability, condition information, inspection records, and applicable warranty terms before procurement.
The WOODWARD 5466-257 is best treated as a legacy TMR analog I/O spare where exact hardware compatibility matters. Personally, I would confirm the existing MicroNet configuration and signal mapping before approving any replacement, even when a newer Woodward module is advertised as backward compatible.
