5503-198 | Woodward | MicroNet Remote I/O Expansion Module

Overview

The Woodward 5503-198 is a MicroNet Remote I/O module engineered to extend field input and output capacity in distributed Woodward control architectures. It operates as a remote interface node, enabling reliable collection and transmission of process signals between field devices and the central MicroNet controller.

Designed for mission-critical turbine and generator control systems, this module supports modular system growth while maintaining deterministic communication and high signal integrity.

System Role and Functionality

The 5503-198 functions as a remote I/O extension rather than a standalone controller. Installed within a MicroNet chassis, it allows I/O points to be deployed closer to field equipment, reducing wiring complexity and improving overall system reliability.

Depending on configuration and vendor classification, this unit may be described as a Remote I/O Module or as a MicroNet Control I/O variant. In all documented applications, its primary purpose is expanding I/O availability and supporting distributed control layouts.

Hardware Architecture

While not intended to replace the main MicroNet controller, the 5503-198 incorporates onboard processing resources to manage real-time I/O handling and communications.

Typical hardware characteristics include a 32-bit RISC architecture with sufficient memory resources to support deterministic data exchange, diagnostics, and protocol handling. Actual CPU speed and memory allocation may vary by firmware and hardware revision.

Communication Interfaces

The module supports multiple industrial communication methods commonly used within MicroNet systems. These interfaces enable seamless integration with upstream controllers and downstream field devices.

Supported interfaces typically include Ethernet-based communication as well as serial and Modbus-compatible connections, depending on system configuration and installed firmware.

Electrical and Mechanical Characteristics

The 5503-198 is built in a compact modular form factor suitable for MicroNet chassis installation. Its mechanical design supports dense cabinet layouts and stable operation in industrial environments subject to vibration and electrical noise.

Power input options vary by configuration and may include AC or DC supply variants. Electrical isolation is implemented between I/O channels to protect sensitive electronics and preserve signal accuracy.

Technical Specifications

Model: 5503-198 Brand: Woodward Module Type: MicroNet Remote I/O Expansion Mounting: MicroNet chassis Dimensions: 160 × 120 × 70 mm Weight: 1.3 kg Processor Architecture: 32-bit RISC Memory: Up to 512 MB (variant dependent) Communication: Ethernet, Serial, Modbus (system dependent) I/O Design: Isolated channels for noise immunity Country of Origin: United States

Typical Applications

Gas turbine control systems Steam turbine control systems Generator and engine management Distributed I/O deployment in MicroNet architectures Remote signal acquisition in large control panels

Compatibility Notes

The 5503-198 is intended for use within Woodward MicroNet control systems and must be paired with compatible MicroNet controllers, power supplies, and chassis components. Firmware compatibility should be verified during system design or replacement planning.

FAQ

Is the 5503-198 a standalone controller

No. The 5503-198 operates as a Remote I/O module and relies on a main MicroNet controller for overall system logic and coordination.

Does this module include onboard processing

Yes. It contains internal processing resources to manage I/O handling and communications, but it does not replace the primary control CPU.

Can this module be used for turbine control

Yes. It is widely deployed in gas and steam turbine systems as part of distributed MicroNet control architectures.