Introduction to WOODWARD 9907-164
9907-164 Product Overview
The WOODWARD 9907-164 is a high-performance microprocessor-based digital governor, serving as the core control unit of the brand’s 505 series for industrial turbines. It integrates advanced adaptive PID algorithms, comprehensive I/O configuration, and built-in safety mechanisms to deliver precise speed and load regulation for steam turbines, turbogenerators, and turboexpanders. Widely deployed in power generation, petrochemical, and mechanical drive systems, it stabilizes the speed of thermal power plant steam turbines to maintain grid frequency, controls turbine-driven compressors in oil pipelines for optimal pressure, and ensures efficient operation of waste heat recovery turbomachinery. Its rugged IP56-rated aluminum housing resists humidity, salt spray, and industrial vibrations, making it suitable for harsh on-site environments. Equipped with a user-friendly 30-key keypad and 2-line display, it supports on-site parameter adjustment without additional tools, while RS-232/RS-422 communication enables seamless integration into DCS/SCADA systems for remote monitoring and diagnostics.
9907-164 Technical Specifications
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Product Type: Digital turbine governor (505 series core model)
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Core Functions: Precision speed/load control, critical speed avoidance, automatic start/stop sequence, overspeed protection
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Application Compatibility: Steam turbines, turbogenerators, turboexpanders (supports single/split-range actuators)
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Input Configuration: 16 contact inputs (4 dedicated + 12 programmable); 6×4-20mA analog inputs
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Output Configuration: 0-10V DC analog output; drives electro-hydraulic actuators directly
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Control Performance: Speed regulation accuracy ±0.01%; fast response to load fluctuations
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User Interface: 30-key multi-function keypad; 2-line×24-character display
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Communication Interface: RS-232/RS-422; supports Modbus protocol
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Power Supply: 24V DC nominal; 18-36V DC wide input range; typical current 1A
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Operating Environment: Temperature -20°C to +60°C; humidity 95% RH (non-condensing at 20-55°C)
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Physical Traits: 355.6mm×279.4mm×101.6mm (W×H×D); weight 4.13kg; IP56 protection rating
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Certifications: Complies with IEC 60529; CE, UL certified
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