Description
Product Overview
The Woodward 5466-5025 is designed for applications that require a high channel count of analog process signals in a compact MicroNet control chassis. Its 24 inputs can be configured for 4–20 mA or 0–5 V signals, allowing compatible transmitters and voltage-output sensors to feed process variables into the controller. The module also provides eight 4–20 mA outputs for sending control signals to compatible field devices. Typical uses include turbine and compressor control, where the control application needs to monitor analog measurements and command external equipment.
The output stage has published specifications of a 600 Ω maximum load resistance, 14-bit resolution, a 5 ms update time, and software-calibrated accuracy of 0.2% of the 0–25 mA full scale. Documentation also describes galvanic isolation from earth ground and control common, but not between individual channels. That distinction matters when designing grounding and signal wiring: isolation at the module level does not mean every input or output channel is independently isolated from every other channel.
Compatibility is a major procurement concern. Woodward identifies the 5466-5025 as an enhanced analog I/O module that can replace the older 5503-904, but the change requires an appropriate coder update. The module also differs from backward-compatible variants such as the 5466-5026 and 5466-5027, which retain earlier software compatibility for specific configurations. Check the installed platform—MicroNet Plus or MicroNet TMR—and the precise coder version before approving the replacement.
Product Introduction
The Woodward 5466-5025 MicroNet high-density analog I/O module provides analog input acquisition and current-output control for supported industrial control systems. It is intended for chassis installation and connects to the field wiring through compatible high-density analog/discrete cables and field termination modules.
Before commissioning, confirm each channel’s configured signal type, terminal mapping, output load, grounding scheme, and software support. Current-input circuits may require the specified 200 Ω resistor arrangement described in product documentation. Use the approved system wiring diagram rather than assuming that an existing field termination assembly will work unchanged with every replacement module.
Key Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Woodward |
| Model | 5466-5025 |
| Product family | MicroNet |
| Product type | High-density analog I/O module |
| Analog input channels | 24 |
| Input signal types | Selectable 4–20 mA or 0–5 V |
| Analog output channels | 8 |
| Output signal | 4–20 mA |
| Maximum output load | 600 Ω, including load and wire resistance |
| Output resolution | 14 bits |
| Output update time | 5 ms |
| Output accuracy | 0.2% of 0–25 mA full scale, software calibrated |
| Output isolation | 500 Vrms isolation to earth ground and control common; no galvanic isolation between channels |
| Input filtering | 5 ms anti-aliasing filter on analog input channels 23 and 24, per the documented configuration |
| Installation | Chassis-mounted; connected to compatible field termination modules using high-density cables |
| Software compatibility | Confirm platform and coder version; published requirements vary by platform and document revision |
| Condition | Confirm actual condition with supplier |
5466-5025
Related Products
These related Woodward modules are useful for compatibility checks. Their signal configuration and software support differ, so they should not be considered interchangeable without reviewing the application.
- Woodward 5466-5026 — Simplex high-density analog I/O with 24 current inputs and 8 current outputs; documented as a backward-compatible option for certain legacy applications.
- Woodward 5466-5027 — High-density analog I/O variant with 24 voltage inputs and 8 current outputs, used with specified TMR and Dataforth field termination arrangements.
- Woodward 5503-904 — Earlier high-density analog I/O module that the 5466-5025 can replace when the required coder update is performed.
- Woodward 5466-332 — Earlier analog I/O module associated with the 5466-5026 backward-compatible variant.
- Woodward 5466-425 — Earlier analog I/O module associated with the 5466-5027 backward-compatible variant.
Frequently Asked Questions
Q1: What is the Woodward 5466-5025 used for?
It acquires analog process signals and generates analog current outputs in compatible MicroNet control systems. Applications can include turbine, compressor, and other industrial machinery control.
Q2: How many inputs and outputs does it provide?
The module provides 24 analog inputs and 8 analog outputs. Inputs support selectable 4–20 mA or 0–5 V signals; outputs provide 4–20 mA current signals.
Q3: Can it replace the Woodward 5503-904?
Woodward documentation identifies it as a replacement option, but a coder update is required. Confirm the platform, software version, wiring, and approved conversion procedure before installing it.
Q4: Is the 5466-5025 compatible with older MicroNet systems?
Compatibility depends on the controller generation and coder version. Woodward’s change documentation specifies MicroNet Plus Coder 1.00 or later and MicroNet TMR Coder TMR 1.00-1 or later, while other manual revisions list different version requirements. Verify the documentation applicable to the actual system.
Q5: What is the maximum output load?
Published specifications give a maximum load resistance of 600 Ω, including the load and wiring resistance. Confirm the connected device’s input requirements and cable resistance before commissioning.
Q6: Are all I/O channels individually isolated?
No. Documentation specifies isolation from earth ground and control common, but not galvanic isolation between channels. Review the grounding scheme and field wiring design when connecting signals from different electrical sources.
Q7: What should a buyer verify before ordering a replacement?
Confirm the full part number, hardware revision, controller platform, coder version, field termination modules, cable arrangement, channel signal types, and output load requirements. For used or refurbished stock, request photographs of the actual module and a functional test report covering the input and output circuits.
