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WOODWARD 5466-1158 – MicroNet Simplex 48/24 HDDIO-2 Smart-Plus Module
Product Overview
The WOODWARD 5466-1158 is a MicroNet Simplex 48/24 High-Density Discrete Input/Output module, commonly designated as an HDDIO-2 Smart-Plus module. It is designed for Woodward MicroNet control platforms and provides 48 discrete inputs and 24 discrete outputs for turbine and rotating-equipment control applications. Woodward specifically identifies this version as a backward-compatible spare for older systems using Coder 4.06, while later documentation lists compatibility with selected Coder 4.06, 5.04, and 6.00 configurations.
The module connects to the MicroNet system through high-density I/O cabling and can be configured with two 24/12 Discrete Field Terminal Modules (FTMs), depending on the installation. This makes it useful when maintaining an established control cabinet where replacing the complete I/O architecture would be impractical. Personally, I would verify the installed Coder version and FTM arrangement before ordering, because software compatibility is a key part of the replacement decision.
Technical Specifications — 5466-1158
| Parameter | Value |
|---|---|
| Product Model | 5466-1158 |
| Manufacturer | Woodward |
| Product Type | MicroNet Simplex 48/24 HDDIO-2 Smart-Plus |
| I/O Configuration | 48 discrete inputs / 24 discrete outputs |
| Input Type | Galvanically isolated discrete inputs |
| Input Voltage | External 18–32 VDC, depending on FTM configuration |
| Isolation | 500 VDC to earth ground; 1000 VDC to control common |
| Update Time | 5 ms |
| CPU Platform | MicroNet / CPU5200 applications |
| Mounting | MicroNet control chassis |
| Connections | High-density discrete/analog cables |
| FTM Options | Two 24/12 Discrete FTMs or configuration without FTMs |
| Calibration | No potentiometer-based calibration required |
| Application | Simplex turbine and industrial control systems |
| Compliance | Refer to applicable Woodward system certification |
Woodward’s MicroNet documentation specifies 48 discrete input channels and 24 discrete output channels, while the 5466-1158 version is identified as the Coder 4.06-compatible option for older installations.
WOODWARD 5466-1158
Key Features and Benefits — 5466-1158
- 48 discrete inputs and 24 discrete outputs in one high-density module.
- Smart-Plus architecture for MicroNet control applications.
- Designed for simplex configurations.
- Suitable as a spare for legacy systems requiring backward compatibility.
- Galvanic isolation helps separate field signals from controller circuitry.
- 5 ms I/O update time supports fast industrial control sequences.
- Available with different FTM arrangements to suit cabinet architecture.
- No potentiometer adjustment is required after a like-for-like replacement.
For older installations, the main advantage is compatibility rather than simply adding more I/O. Woodward explicitly describes this part as a spare-only option for backward-compatible systems.
Related Models
5466-1156 — MicroNet TMR 48/24 HDDIO-2 Smart-Plus module intended for TMR applications and identified as the redundant counterpart to the simplex version.
5466-1050 — MicroNet Simplex 48/24 HDDIO Smart-Plus module intended for newer systems using Coder 5.04 and later.
5466-1051 — MicroNet TMR 48/24 HDDIO Smart-Plus module for TMR and redundant applications using newer Coder configurations.
5441-693 — High-density discrete I/O FTM used with supported MicroNet simplex configurations.
Installation and Maintenance — 5466-1158
Before installation, confirm the MicroNet chassis configuration, CPU platform, installed Coder version, FTM arrangement, and existing cable routing. Power should be isolated according to the site’s control-system maintenance procedure, with appropriate ESD precautions used during handling.
After installation, check module diagnostics and LED indications, then verify representative discrete inputs and outputs against the control-system drawings. For a critical turbine application, a controlled functional test should be completed before returning the equipment to normal service.
Woodward’s documentation notes that 5466-1158 is intended for specific legacy software configurations, so substituting another HDDIO module solely because the channel count appears identical can create an avoidable compatibility problem.
Product Warranty — 5466-1158
Warranty terms depend on the supplier and product condition. Purchasing records should identify the exact Woodward part number, hardware revision, serial number where applicable, test status, and warranty period. Woodward also provides a product-history lookup service using the product label and part number for maintenance and upgrade verification.
The WOODWARD 5466-1158 is best treated as a legacy MicroNet simplex I/O spare where software and cabinet configuration have already been verified, rather than as a universal replacement for every 48/24 HDDIO installation.
