Woodward PEAK-150 9905-864 Digital Turbine Controller

Woodward PEAK-150 (9905-864) is a microprocessor-based digital governor controller specially designed for single-valve steam turbines. It delivers precise speed regulation, overspeed protection and sequence control for small and medium turbine units, accepting dual magnetic pickup signals for reliable shaft speed measurement.

This unit adopts robust NEMA 4X enclosure supporting wide-range AC/DC power supply. It integrates local operation keypad, digital display and multiple relay alarm outputs. Equipped with configurable analog and discrete I/O, it is widely used as spare parts for industrial steam turbine control system maintenance and renovation projects.

Main Specifications

• Brand: Woodward
• Model: PEAK-150, Part No: 9905-864
• Product Type: Digital Steam Turbine Governor Controller
• Power Supply: 88–132 VAC / 90–150 VDC universal power input
• Speed Input: 2-channel redundant magnetic pickup inputs
• I/O Configuration: 8 discrete inputs, 4 relay outputs, analog actuator drive
• Enclosure Standard: NEMA 4X dustproof and waterproof cabinet
• Operation Panel: Keypad, LED indicators and digital display
• Communication: Supports communication with Woodward configuration tool
• Operating Temperature Range: -25°C ~ +60°C

Core Functions

• Accurate closed-loop speed control for steam turbine under variable load conditions
• Dual magnetic pickup signal selection improves reliability of speed feedback circuit
• Built-in overspeed protection function and on-site overspeed trip test function
• Support turbine start-stop, speed ramp control and remote speed setpoint adjustment
• Multi-channel relay outputs for alarm, trip and external interlock signal transmission
• Front panel supports local parameter checking, operation and fault status indication
• Configurable control parameters to adapt to different types of single-valve steam turbines
• NEMA 4X cabinet can be installed directly on-site without additional protective box
• Complete hardware self-diagnosis to detect internal faults and input signal abnormalities
• Stable continuous operation for long-term unattended industrial turbine units

Application Scenarios

• Industrial waste heat power generation steam turbine control systems
• Sugar, chemical, pulp and paper factory auxiliary steam turbine units
• Mining, cement plant driving steam turbine governor control racks
• Water treatment plant large pump driving turbine automation equipment
• Biomass power plant small steam turbine speed control systems
• Oil & gas factory auxiliary power generation turbine control cabinets
• District heating station back-pressure steam turbine monitoring equipment
• Old turbine control system upgrade, transformation and spare parts replacement
• Woodward turbine governor spare parts inventory and field maintenance projects