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Woodward 9902-279

Product Name:​ 505 Series Digital Controller Companion Module / Potential Converter
Product Introduction:​ The 9902-279 is a general-purpose control module/converter within Woodward’s 505/505E series turbine control system family. Based on a microprocessor architecture, the 505 series is used for speed control, load distribution, synchronization, and protection of steam and gas turbines. The 9902-279 serves as a signal conversion or control interface module within the system, performing specific signal processing or power conversion tasks.
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Detailed content

Technical Specifications:
  • Series: Woodward 505/505E Digital Turbine Control System
  • Supply voltage: +24 VDC (approximately 1 A)
  • Communication: RS-232 / RS-422 serial ports
  • Operating temperature: –20 to +60 °C
  • Storage temperature: –40 to +85 °C
  • Protection rating: IP56 (NEMA 4X)
  • Dimensions: Approximately 356 × 279 × 102 mm
  • Weight: Approximately 4.13 kg
Functional Features:​ Seamless integration with 505 series controllers; Modbus communication protocol support; menu-driven software configuration; high-reliability industrial-grade design; optional redundant configuration.
Application Scenarios:​ Aeroderivative gas turbine control; industrial gas turbine control; diesel engine speed governing; steam turbine control; compressor control; turboexpander control; power generation control system integration.
Structural Characteristics:​ Standard 505 series module form factor in metal enclosure; front panel with status indicators and interface; rear with multi-terminal wiring block; shares backplane bus with 505 series.
Working Principle:​ As an I/O or signal processing module of the 505 control system, it receives signals from sensors or commands from the main controller, performs signal conversion, amplification, and isolation, then outputs to field devices or uploads to the main controller for processing.
Installation Requirements:
  • Install within standard Woodward control cabinet
  • Execute wiring per corresponding wiring diagram
  • Pay attention to termination matching for communication ports
Usage Precautions:
  • Specific I/O definitions are subject to the drawing corresponding to the serial number
  • Prohibit guessing pin definitions based on sibling model numbers
  • Re-configure parameters after module replacement
  • Regularly inspect wiring tightness and thermal state

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