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Product Overview
The WOODWARD 5466-1158 is a MicroNet Simplex 48/24 High-Density Discrete Input/Output (HDDIO-2) Smart-Plus module used in Woodward MicroNet control systems. It provides 48 discrete input channels and 24 discrete output channels for turbine and industrial control applications. Woodward documentation identifies this part as the backward-compatible HDDIO replacement for systems using 5200 CPUs with Coder 4.06, making it particularly relevant to installed legacy control cabinets.
The module can be configured with two 24/12 Discrete Field Terminal Modules (FTMs) or used in a configuration without the FTMs. Its galvanically isolated inputs and fast 5 ms update time support discrete signal monitoring and control. For maintenance work, the installed Coder version and I/O architecture should be checked before substitution, since equivalent channel counts do not necessarily mean software compatibility.
Technical Specifications — 5466-1158
| Parameter | Value |
|---|---|
| Product Model | 5466-1158 |
| Manufacturer | Woodward |
| Product Type | MicroNet Simplex 48/24 HDDIO-2 Smart-Plus |
| Application | Simplex turbine and industrial control |
| Discrete Inputs | 48 channels |
| Discrete Outputs | 24 channels |
| Input Type | Optically / galvanically isolated discrete inputs |
| Input Update Time | 5 ms |
| Output Update Time | 5 ms |
| External Input Voltage | 18–32 VDC with applicable 48/24 FTM |
| Isolation | 500 VDC to earth ground; 1000 VDC to control common |
| Time Stamping | 500 μs resolution |
| CPU Compatibility | MicroNet CPU5200 applications |
| Coder Compatibility | Coder 4.06-compatible legacy systems |
| Mounting | MicroNet control chassis |
| Interfaces | High-density I/O connections and FTM interfaces |
| Compliance | Refer to applicable Woodward system documentation |
Woodward specifies 48 discrete inputs, 24 discrete outputs, 5 ms update times, and galvanic isolation for the HDDIO architecture. The 5466-1158 is specifically identified as the Coder 4.06-compatible Simplex version.
WOODWARD 5466-1158
Key Features and Benefits — 5466-1158
- 48 discrete inputs and 24 discrete outputs in a high-density module.
- Designed for MicroNet Simplex control architectures.
- Galvanically isolated discrete input channels.
- 5 ms input and output update performance.
- Compatible with designated legacy Coder configurations.
- Supports 24/12 Discrete FTM arrangements.
- No potentiometer-based calibration is required for like-for-like replacement.
- Well suited to turbine-control spare inventories where installed-system compatibility matters.
Woodward lists this device as the Simplex counterpart to the 5466-1156 TMR module. For systems running Coder 5.04 or later, Woodward recommends the 5466-1050 as the preferred Simplex HDDIO implementation instead.
Related Models
5466-1156 — MicroNet TMR 48/24 HDDIO-2 Smart-Plus module for redundant/TMR applications using the corresponding legacy compatibility path.
5466-1050 — MicroNet Simplex 48/24 HDDIO Smart-Plus module intended as the preferred implementation for systems using Coder 5.04 or later.
5466-1051 — MicroNet TMR 48/24 HDDIO Smart-Plus module for newer redundant control applications.
5441-693 — MicroNet high-density discrete I/O FTM providing 24 inputs and 12 outputs for supported configurations.
Installation and Maintenance — 5466-1158
Before replacement, record the existing CPU type, Coder version, FTM arrangement, cable connections, and chassis slot. Follow site lockout procedures and apply ESD controls when handling the module.
After installation, verify module diagnostics, discrete input states, output operation, and controller communications. Test representative field signals against the approved I/O drawings before returning the turbine or process controller to normal operation.
For legacy systems, software compatibility deserves particular attention. Woodward specifically distinguishes this part from newer HDDIO implementations, so replacing it solely on the basis of channel count is not recommended.
Product Warranty — 5466-1158
Warranty coverage depends on the supplier, product condition, and purchase agreement. For critical automation spares, purchasing records should include the exact part number, hardware revision, serial number where applicable, inspection status, test results, and warranty terms.
The WOODWARD 5466-1158 is best maintained as a configuration-specific MicroNet Simplex spare for compatible legacy installations, particularly where Coder 4.06 compatibility is required.
