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9905-860 Woodward Digital Steam Turbine Control

9905-860 Woodward Digital Steam Turbine Control

Product Description

The 9905-860 is a specialized digital turbine governor from the Woodward Peak150 Series, designed for precise control of single-valve or split-range steam turbine systems. This microprocessor-based controller replaces legacy mechanical governors...

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Availability: Low stock: 10 left

SKU: 9905-860
Vendor: Woodward
Category: Digital Steam Turbine Control
Related Series:

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Product Description

The 9905-860 is a specialized digital turbine governor from the Woodward Peak150 Series, designed for precise control of single-valve or split-range steam turbine systems. This microprocessor-based controller replaces legacy mechanical governors with modern digital PID-based regulation for speed and load management.

The 9905-860 processes high-speed magnetic pickup signals and executes real-time control algorithms to maintain stable turbine RPM under varying mechanical load conditions. It also integrates overspeed protection and diagnostic monitoring, making it suitable for critical power generation and mechanical drive applications.

Technical Specifications

Parameter Specification
Product Series Peak150
Model Number 9905-860
Processor Type Digital Microprocessor
Control Logic PID (Proportional-Integral-Derivative)
Input Interface Dual Magnetic Pickup (MPU) Support
Output Type Actuator Driver (4–20 mA or 20–160 mA typical)
Speed Range Configurable for low and high-speed turbines
Diagnostic Functions Lost speed signal detection, hardware health monitoring
Physical Dimensions 2.2 cm × 12.4 cm × 12.6 cm
Shipping Weight 1.5 kg

Application

The 9905-860 is widely deployed in:

  • Steam turbine speed and load control

  • Pump and compressor constant-speed control

  • Auxiliary power generation systems

  • Industrial plants requiring continuous operation during grid transitions

Its bumpless transfer capability between speed and load control modes helps maintain process stability during power system fluctuations.

Technical FAQ

Does the 9905-860 support remote setpoint control?
Yes. The controller typically accepts external 4–20 mA analog signals for remote speed or load setpoint adjustments via DCS or PLC systems.

What happens if the speed signal is lost?
The controller automatically triggers safety logic that initiates a controlled shutdown or emergency trip to prevent turbine overspeed damage.