Digital guide
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Woodward 9905-973
Product Overview
A rugged, high-density relay output module belonging to the Woodward LinkNet industrial communication series. It provides 8 independent, software-configurable relay outputs for controlling valves, motors, alarms, and other field devices in distributed control systems. The module communicates over the LinkNet fieldbus, enabling seamless integration with Woodward 505/505e, DSLC, and other compatible controllers.
Detailed content
Technical Specifications
- Communication Protocol: LinkNet (up to 64 nodes per bus)
- Output Channels: 8 independent Form-C relay outputs
- Contact Rating: 16 A @ 24 VDC; 5 A @ 250 VAC resistive
- Isolation Voltage: 2500 VAC between field and circuit sides
- Power Supply: 18–32 VDC, 1.2 A maximum
- Operating Temperature: -40 °C to +85 °C
- Protection Grade: IP54 (dust and splash resistant)
- Dimensions: 220 mm × 95 mm × 70 mm
- Weight: Approximately 1.0 kg
Functional Characteristics
- 8 individually configurable outputs for diverse on/off control needs
- Hot-swappable for online maintenance without system shutdown
- LED status indicators for power, communication, and each relay state
- Software-configurable fail-safe states (normally open/closed)
- High noise immunity for operation in EMI-heavy industrial environments
- Supports daisy-chaining for efficient wiring in large systems
Application Scenarios
Steam/gas turbine control systems, power plant auxiliary equipment control, petrochemical process valve actuation, industrial engine safety shutdown systems, and marine automation control panels.
