Woodward 8400-016

Woodward 8400-016

Product Introduction
The Woodward 8400-016 is a high-performance digital control unit or operator interface panel. It serves as the human-machine interface (HMI) and local control station for Woodward’s turbine governing systems, allowing operators to monitor parameters, acknowledge alarms, and adjust setpoints locally.

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Description

Woodward 8400-016

Technical Specifications

  • Product Series: 8400 Series Control / Display Unit.
  • Display: High-contrast alphanumeric or graphic LCD display.
  • Keypad: Sealed membrane keypad with tactile feedback for glove operation.
  • Communication: Serial interface to the main turbine controller (e.g., 505E or MicroNet).

Functional Features

  • Real-Time Monitoring: Displays critical turbine parameters such as speed, exhaust temperature, and valve position.
  • Local Control: Allows for local start/stop, reset, and speed/load setpoint adjustments.
  • Alarm Management: Visually indicates active faults and requires operator acknowledgment for safety-critical alarms.
  • Menu Navigation: Intuitive, menu-driven software for accessing configuration and diagnostic screens.

Application Scenarios
Mounted on the front of turbine control panels or in local operator stations for steam turbines, gas turbines, and turbo-expanders.

Performance Parameters

  • Visibility: Sunlight-readable display for installations in brightly lit or outdoor environments.
  • Response Time: Instantaneous update of process data from the main controller.

Material Composition
Rugged cast aluminum or stainless steel enclosure with a chemically strengthened glass display window. UV-resistant keypad overlay for long-term durability.

Structural Characteristics
Compact, flush-mount or surface-mount design. Features a protective visor to reduce glare and a rear connector for easy panel wiring.

Working Principle
The panel communicates continuously with the main turbine controller via a serial protocol. It sends operator commands (key presses) and receives process data, rendering it on the display in a user-friendly format.

Installation Requirements
Cut the appropriate panel cutout and mount using the provided gasket and hardware to maintain the NEMA/IP rating. Connect the communication cable using shielded wire.

Usage Precautions

  • Keep the display clean; use only approved, non-abrasive cleaning agents.
  • Avoid pressing the keypad with sharp objects that could puncture the membrane.
  • Ensure the communication link is secure; a broken link will cause the display to show a communication fault.

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