Woodward 9905-970 LinkNet 6-Channel Input Module

Woodward 9905-970 LinkNet 6-Channel Input Module

The Woodward 9905-970, also cataloged as the 9905-970 LinkNet input module, operates as a dedicated hardware component for acquiring up to six analog signals within turbine control systems.

Hardware Specifications

I/O Density Scaling

The 9905-970 provides six independent analog input channels for monitoring turbine parameters such as temperature, pressure, and flow rate. With 33 kΩ input impedance and transient protection up to 900 VDC, the module ensures deterministic signal acquisition. Its design supports scalability when integrated with other LinkNet components, enabling flexible expansion of turbine monitoring systems. The LED display provides direct feedback for channel status and diagnostics.

Frequently Asked Questions

Q: What should be checked if all chassis Fault LEDs are on? A: Inspect the CPU module for failure, as it may be causing the fault condition.

Q: What if only the Fault LED is on or flashing? A: Verify the module is installed in the correct slot. If the fault persists, replace the module.

Q: What action should be taken when a module fault is detected? A: Disable or de-energize outputs to prevent malfunctions caused by the faulty module.

Field Installation Guidelines

• Mount the module securely in the designated chassis slot.
• Ensure shielded cabling is grounded at a single point to minimize EMI.
• Maintain separation between analog signal wiring and high-voltage circuits.
• Verify polarity when connecting 24 VDC supply lines.
• Observe environmental limits (-40 to +85 deg C) during installation.