Analog I/O Module 5501-471 Woodward

This model is an important hardware component in the Woodward MicroNet and NetCon digital control systems.

1. Product Description

The Woodward 5501-471 is an Analog I/O Module specifically designed for the MicroNet platform. The MicroNet system is commonly used for complex control of gas turbines, steam turbines, and large reciprocating engines. The 5501-471 module serves as the sensor interface of the system, responsible for collecting analog signals such as pressure, temperature, and flow, and converting the instructions from the controller into the required analog drive signals for actuators (such as fuel control valves). Its design emphasizes high sampling rate and industrial-grade stability.

2. Technical Data Sheet

Model: 5501-471

Series: MicroNet / NetCon 500

Channel Configuration: * Input: Usually includes multiple analog inputs, supporting 4–20 mA current loop or 0–5V/0–10V voltage signals.

Output: Includes an analog output channel, mainly used to drive the proportional actuator.

Resolution: 16-bit (16-bit) A/D and D/A conversion, providing extremely high control sensitivity.

Isolation performance: There is full electrical isolation between the channel and the system backplane, which can effectively resist common-mode interference in industrial environments.

Environmental indicators:

Operating temperature: -40 °C to +70 °C.

Three-proof treatment: Circuit boards are usually coated with a corrosion-resistant coating (Conformal Coating), which is suitable for high-humidity or salt-spray environments.

3. Related Models / Components

Model 5501-471 usually works in conjunction with the following MicroNet hardware:

5466-316 / 5466-1035: CPU main processing module.

5464-834: FTM (Field Terminal Module) – Field Terminal Module (Field Terminal Block)

5501-467 / 5501-470: Modules for analog quantity or power monitoring of the same series (usually selected based on the number of channels and signal types).

9907-014: High-density shielded cable for connecting the module to the terminal block.

4. Application Cases (Application Examples)

Gas Turbine Governing: Real-time collection of pressure and temperature feedback at each stage of the turbine, and precise control of fuel flow.

Steam turbine control: Used for extraction steam control or pressure regulation of the condensation system.

Compressor Control System (CCS): In the crucial anti-surge logic, it processes rapidly changing analog quantity feedback.

Automated power generation unit: Monitoring various analog parameters of the generator (such as voltage, frequency feedback regulation, etc.).

5. Product Advantages and Features

High reliability: Specifically designed for Mission-Critical applications, supporting both standalone and redundant configurations of MicroNet.

Hot-swappable support: In a dual-redundancy configuration, faulty modules can be replaced while the system is running, without causing downtime.

Powerful self-diagnosis: The module has real-time monitoring capabilities, which can identify sensor breakage, loop faults, and internal component failures, and promptly report errors to the main station.

High-density integration: Multiple input and output channels are integrated within a compact plug-in space, optimizing the layout of the control cabinet.

6. Other Models in the Series

The I/O family of Woodward MicroNet includes several derivative models:

5501-467: Analog board cards with different measurement ranges or channel definitions.

5464-643: Input module specifically designed for thermocouples.

5464-658: Four-channel speed sensor input module (MPU/Proximity).

5462-758: High-density Discrete Input ModuleAnalog I/O Module