Product Description

The 9905-970 is a distributed I/O interface node within the Woodward LinkNet automation ecosystem. It is designed to provide high-speed data acquisition and control signal distribution for turbine and engine governing systems.

The module functions as a localized control node that connects field sensors and actuators to a central controller via a proprietary serial communication network. By decentralizing I/O processing, the 9905-970 reduces cable runs, improves signal reliability, and supports deterministic control performance in mission-critical industrial applications.

Built with ruggedized industrial components, the module is optimized for power generation, offshore energy, and heavy mechanical drive systems, where environmental stress and vibration resistance are critical design requirements.

Technical Specifications

Application Scenarios

The 9905-970 is widely used in:

• Steam turbine control systems

• Gas turbine governing architectures

• Mechanical drive power plants

• Offshore oil and gas installations

It is typically installed in local junction enclosures near the prime mover to collect field signals such as:

• Valve position feedback

• Temperature monitoring signals

• Pressure and process status inputs

These signals are aggregated and transmitted to central controllers such as MicroNet-based control systems.

Technical FAQ

What is the benefit of LinkNet architecture?
The LinkNet network allows multiple distributed I/O nodes to be connected using a single twisted-pair cable in a daisy-chain topology, significantly simplifying installation complexity and reducing wiring costs.

Can the 9905-970 operate in redundant control systems?
Yes. The module is commonly deployed in redundant configurations to improve system availability and prevent single-point failures from causing turbine shutdowns.