Product Overview

The Woodward 9905-969 serves as a high-performance, distributed analog input interface within the LinkNet I/O architecture. Designed for seamless integration with Woodward’s MicroNet and Atlas control systems, this module provides six independent channels for monitoring critical variables like fuel flow, steam pressure, and actuator feedback. It acts as a "Smart" node, digitizing field data at the source and transmitting it via the high-speed LinkNet serial bus to the main controller. We supply this unit as 100% Brand New and Original, ensuring your turbine or engine control system operates with factory-certified precision and deterministic timing.

Technical Specifications

The 9905-969 delivers high signal fidelity in the most demanding industrial environments.

Engineering Advantages

The Woodward 9905-969 optimizes cabinet design and system reliability through several critical engineering features:

• Self-Powered Field Loops: The module integrates a 24V DC power source for each channel. This internal supply energizes two-wire field transmitters directly, eliminating external power supplies and reducing the complexity of your terminal strip wiring.

• Galvanic Noise Rejection: Triple isolation separates the field inputs, the LinkNet communication bus, and the module power. This architecture prevents ground loops and blocks high-frequency electrical noise from corrupting the control logic—a vital requirement in power plants and compressor stations.

• Distributed Architecture Efficiency: By mounting the 9905-969 closer to the field devices, you significantly reduce analog cable runs. This minimizes signal attenuation and cuts installation costs while maintaining high-speed data updates over the robust LinkNet serial interface.

• Proactive Signal Diagnostics: The module continuously monitors for open-loop conditions and out-of-range values. It instantly communicates these faults to the CPU, allowing the control system to distinguish between a genuine process excursion and a failed sensor.

FAQs

Is the Woodward 9905-969 supplied in Brand New condition?

Yes. We supply the 9905-969 in 100% Brand New and Original condition. Every module ships in original Woodward factory packaging, ensuring the hardware remains pristine and carries full operational integrity.

How do I set the address for this module on the LinkNet bus?

The 9905-969 features hardware-selectable rotary switches located on the module. You simply rotate these switches to the unique address assigned in your MicroNet or Atlas software configuration to establish communication.

Can the 9905-969 operate in unheated outdoor enclosures?

Yes. The module supports an extended industrial temperature range of $-40^{\circ}C$ to $+70^{\circ}C$. This makes it ideal for remote mounting in harsh climates where standard commercial I/O modules would fail.

Does this module support 0-10V or thermocouple inputs?

The 9905-969 is specifically optimized for 4–20 mA DC current loops. For voltage-based or temperature-specific inputs (RTD/TC), Woodward offers other specialized modules within the LinkNet series to maintain consistent system architecture.