The Woodward SPC (Servo Position Controller) is a field-programmable servo-valve driver that accepts DeviceNet or 4–20 mA position demand signals and accurately positions proportional or integrating servo-valves. Designed for steam and gas turbine fuel valve control, the SPC provides the accuracy, responsiveness, and redundancy required for critical turbomachinery applications.
Key Features
Control
- Accepts DeviceNet (Group II slave) or 4–20 mA position demand
- Controls one proportional or integrating servo-valve
- Single or dual AC feedback (LVDT/RVDT) with integral excitation and signal conditioning
- Single DC feedback device option
- Auto-calibration routines for fast servo setup and reduced installation time
- Manual stroke capability for testing and maintenance
Configuration & Integration
- Windows-based PC interface software for configuration and dynamic tuning
- Upload/download configurations between SPC units
- DeviceNet network command with 4–20 mA backup
- Compact digital driver with IP20 bulkhead mount
- Classified for heavy industrial environments
Applications
- Steam turbine fuel valve positioning
- Gas turbine fuel valve control
- Proportional and integrating servo-valve applications
- Systems requiring DeviceNet integration with analog backup
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We supply SPC units and provide configuration support, repair, and spare parts for turbine valve control applications.