Woodward 9905-973 Linknet Relay Module | 8 Channel Industrial I/O Controller

9905-973 Woodward Linknet 8 Channel Relay Module

9905-973 is a professional Linknet relay module developed by Woodward for gas turbine and industrial automation systems.
The module provides accurate relay switching, stable communication performance, and reliable digital control integration for demanding applications.

The compact structure supports multiple relay outputs while maintaining strong electrical isolation and stable signal transmission.
Engineers often select this model for automation cabinets, turbine control panels, and remote switching systems.

Manufacturer: Woodward
Category: Linknet 8 Channel Relay Module
Country of Origin: United States

System Architecture Overview

• The module contains 8 independent relay channels for multi-device switching control.
• Digital communication supports GPIO and industrial automation control platforms.
• Integrated relay isolation reduces electrical interference inside complex turbine environments.
• Functional fault LED indicators improve troubleshooting efficiency during field maintenance.
• The reset button simplifies rapid operational recovery during abnormal system conditions.
• The module supports remote signal control without direct connection to high-power equipment.

Technical Data Sheet

• Model: 9905-973
• Manufacturer: Woodward
• Input Voltage Rating: 18–32VDC, 27.4A
• Power Supply Input: 18 to 32 Vdc
• Output Voltage Rating: 24VDC, 16A
• Power Consumption: 14 W
• Potential Voltage Range: 80–150
• Signal to Actuator: 0 to 200 mA
• Speed Sensing: 1 to 30 Vac
• Network Isolation: 1000 Vrms at 0–60 Hz
• Maximum Stub Length: 300 mm
• Maximum Nodes per Bus: 64
• Operating Temperature: 55°C
• External Dimensions: 8.75W × 14.625D × 5.375H
• Weight: 9.11 lbs

Typical Equipment Compatibility

• Industrial gas turbine control systems
• Power generation automation cabinets
• Distributed relay monitoring systems
• Remote industrial actuator control panels
• Factory automation equipment
• Generator auxiliary control systems
• Robotics and programmable automation projects

Oiltech Controls’s Insight

• Woodward designed this module for stable relay communication in high-noise industrial environments.
• The relay isolation structure improves long-term operational reliability in turbine applications.
• Many engineers select this model for projects requiring multiple relay outputs within compact cabinets.
• The module fits applications requiring accurate remote switching and strong electrical protection.
• The Linknet platform reduces complex field wiring and improves system maintenance efficiency.

Installation and Wiring Guidance

• Install the relay module inside grounded industrial control cabinets for stable communication performance.
• Keep signal cables separated from high-voltage power wiring to reduce signal distortion.
• Use regulated DC power supplies within the specified voltage range for reliable operation.
• Check relay load ratings before connecting actuators or external electrical equipment.
• Leave enough cooling space around the module during panel installation.

Shipping and Warranty Information

• The product remains in stock for fast order processing.
• Orders usually ship within 24–28 hours after payment confirmation.
• FedEx, UPS, and DHL international delivery services are available.
• Strong industrial export packaging protects the module during transportation.
• Oiltech Controls provides a 12-month warranty for this product.

Professional FAQ

• Why do engineers use relay isolation in turbine systems?Relay isolation protects low-voltage control circuits from electrical spikes and unstable field signals.
• How can users select the correct relay module capacity?Users should verify relay current rating, voltage range, and connected actuator load before installation.
• Can this module operate inside high-temperature industrial cabinets?Yes. The module supports stable operation up to 55°C under proper ventilation conditions.
• What common applications use the 8-channel relay structure?Engineers often use it for generator auxiliaries, industrial alarms, remote actuators, and automated switching systems.
• How can users improve relay module service life?Users should maintain clean cabinet airflow, stable voltage input, and proper grounding during operation.

Quick Contact Support

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923
• Official Website:
  

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