Woodward 9905-972 LinkNet 6-Channel 4–20 mA Output Module

Product Overview

The Woodward 9905-972 is a LinkNet 6-Channel 4–20 mA Output Module from Woodward's LinkNet distributed I/O product line. It provides six isolated 4–20 mA analog output channels for driving field devices such as valve positioners, actuators, and chart recorders in turbine, engine, and process control applications. The 9905-972 is designed for 18–32 VDC operation and integrates seamlessly with Woodward LinkNet communication networks.

Key Technical Specifications

• Product Type: LinkNet 6-Channel 4–20 mA Output Module
• Series: Woodward LinkNet / 9905 Series
• Output Channels: 6 (4–20 mA)
• Output Type: Isolated analog current output
• Operating Voltage: 18–32 VDC
• Communication: LinkNet network
• Mounting: LinkNet rack or DIN-rail mounted
• Origin: USA

Related LinkNet Modules

• 9905-966 — LinkNet TC Input (Fail High)
• 9905-967 — LinkNet Module
• 9905-969 — LinkNet 6C 4–20 mA In w/24V
• 9905-970 — LinkNet 6 Channel 100 Ohm RTD
• 9905-971 — LinkNet Discrete In
• 9905-972 — LinkNet 6C 4–20 mA Out
• 9905-973 — LinkNet 8 Channel Relay Module

Key Features

• Six Isolated Outputs: Each channel independently isolated for noise immunity
• 4–20 mA Standard: Industry-standard current loop for field devices
• LinkNet Communication: Distributed I/O via Woodward LinkNet network
• Wide Voltage Range: 18–32 VDC for flexible power supply options
• Industrial Grade: Designed for harsh industrial environments

Applications

• Valve positioner control
• Actuator drive signals
• Chart recorder and indicator drives
• Turbine fuel valve control
• Process control analog output

Installation Guide

1. Mount in LinkNet rack or on DIN rail
2. Connect 18–32 VDC power supply
3. Wire LinkNet communication cable
4. Connect 4–20 mA output signals to field devices
5. Configure output scaling via LinkNet configuration software
6. Verify each channel output with loop calibrator

FAQ

Q: How many output channels does 9905-972 have?
A: Six isolated 4–20 mA output channels.

Q: What is LinkNet?
A: Woodward's distributed I/O communication network for connecting remote I/O modules to the main control system.

Q: Can outputs be individually scaled?
A: Yes, each channel can be independently configured for output range and scaling.

Model Selection Tips

• 9905-972 = 6-channel 4–20 mA output for LinkNet distributed I/O
• For 4–20 mA inputs, use 9905-969 (6C 4–20 mA In w/24V)
• For RTD inputs, use 9905-970 (6 Channel 100 Ohm RTD)
• For discrete inputs, use 9905-971 (LinkNet Discrete In)
• For relay outputs, use 9905-973 (8 Channel Relay Module)
• Verify LinkNet network master module compatibility