Woodward 9907-1183 is a 505E XT digital governor controller, an enhanced variant of the 505E series designed for high-precision speed, load, and process control of steam turbines, gas turbines, and turbogenerators. It integrates advanced processing power, expanded I/O, and flexible communication capabilities to meet the demands of complex industrial applications (e.g., combined-cycle power plants, oil & gas processing). Below is its detailed technical information:
- Brand: Woodward
- Model: 9907-1183
- Product Type: Digital governor control unit
- Series Affiliation: 505E XT (Extended Technology) series
- Core Purpose: Manage turbine operation by regulating speed, load, extraction/admission pressure, and emergency shutdown logic; supports integration with modern DCS/SCADA systems.
- Certifications: CE, UL, CUL compliant; Hazardous Location Rating: Class I, Div. 2 (Groups A/B/C/D, T3C) and Class I, Zone 2 (Group IIC, T3C) for explosive environments.
- Input Voltage: 18–32 VDC (nominal 24 VDC); reverse polarity and overvoltage protection (up to 36 VDC).
- Power Consumption: 1.2 A at 24 VDC (no load); 2.5 A max with full I/O expansion.
- Primary Interfaces:
- Ethernet TCP/IP: Supports Modbus TCP and Ethernet/IP for high-speed DCS integration (data rate up to 100 Mbps).
- Serial Ports: 1x RS-232 (configuration/debugging), 2x isolated RS-485/RS-422 (Modbus RTU) for legacy system connectivity.
- Optional Protocols: Profinet or DeviceNet (via add-on communication modules) for factory automation compatibility.
- Digital Inputs: 24 isolated dry-contact inputs (8 dedicated, 16 fully programmable); 24 VDC compatible, with short-circuit protection.
- Analog Inputs: 8 differential 4–20 mA inputs (16-bit resolution); supports RTD (PT100) and thermocouple (Type J/K/T) inputs for temperature monitoring (via optional module).
- Digital Outputs: 12 relay outputs (Form C, 24 VDC/5 A) + 4 solid-state outputs (24 VDC/1 A) for controlling actuators, alarms, or contactors.
- Analog Outputs: 4 isolated 4–20 mA outputs (16-bit resolution) for electro-hydraulic converter control or process signal transmission.
- Expansion Support: 2 slots for optional I/O modules (e.g., additional analog channels, digital relays) to scale for complex systems.
- Processor: 32-bit ARM Cortex-M7; real-time control update rate: 5 ms (speed/load control), 10 ms (process control).
- Memory: 512 MB DDR4 RAM (program execution) + 256 MB flash memory (configuration storage, event logs).
- Data Logging: Stores up to 10,000 operational events (trips, alarms, parameter changes) with time stamps (UTC synced via NTP).
- Dimensions: 15.2” (W) × 12.1” (H) × 4.5” (D) [38.6 cm × 30.7 cm × 11.4 cm]; panel-mount design.
- Operating Temperature: -40°C to +70°C (-40°F to +158°F) (without enclosure); -20°C to +60°C (with NEMA 4X enclosure).
- Humidity: 5–95% RH (non-condensing); IP54 front panel protection (IP65 with optional enclosure).
- Vibration Resistance: 5 g (10–500 Hz) per IEC 60068-2-6; shock resistance: 50 g (11 ms half-sine) per IEC 60068-2-27.
Advanced Control Modes
- Speed Control: ±0.05% setpoint accuracy; supports isochronous (constant speed) and droop (speed vs. load) modes.
- Load Control: Manual/auto load adjustment; supports load sharing between multiple turbines (via Modbus).
- Process Control: Integrated extraction/admission pressure control, steam flow limiting, and temperature monitoring.
- Critical Speed Avoidance: 5 programmable speed bands to prevent turbine resonance.
Safety & Reliability
- Dual Redundant Design: Optional dual power supplies and redundant I/O for mission-critical applications.
- Emergency Shutdown (ESD): Hardwired ESD input with <100 ms response time; first-out trip indication for root-cause analysis.
- Watchdog Timer: Hardware/software watchdog to reset the controller in case of faults (e.g., software hang).
User Interface & Configuration
- Color LCD Display: 4.3” TFT color screen (480×272 resolution) showing real-time parameters, trends, and alarms.
- Tactile Keypad: 16-key keypad for on-site configuration; password protection (3 access levels: operator, maintenance, admin).
- Software Support: Configurable via Woodward ProTech Studio (PC-based) for parameter editing, trend plotting, and firmware updates.
Diagnostics & Maintenance
- Built-in Self-Test (BIST): Automatically tests I/O, communication, and power circuits on startup.
- Status LEDs: Dedicated LEDs for power, communication, and fault states (e.g., red for trip, green for normal).
- Remote Monitoring: Supports web-based monitoring (via Ethernet) for real-time data access without software installation.
- Power Generation: Steam/gas turbines in thermal power plants, combined-cycle systems, and distributed generation (DG) units.
- Oil & Gas: Turbogenerators, compressors, and pumps in refineries, offshore platforms, and pipeline stations.
- Industrial Processes: Turbines for pulp/paper mills, chemical plants, and water treatment facilities (process steam supply).
- Marine: Propulsion turbines and auxiliary power turbines on large ships (e.g., cargo vessels, offshore support vessels).
- Technical Manual: Woodward 505E XT Digital Governor Installation & Operation Manual (Document No. 8501-1183) – includes wiring diagrams, configuration guides, and troubleshooting.
- Ordering Details:
- Base Model: 9907-1183 (standard I/O, Ethernet, Modbus).
- Optional Accessories: NEMA 4X enclosure, Profinet/DeviceNet modules, RTD/thermocouple input modules, redundant power supplies.
- Lead Time: Typically 3–5 weeks for standard configurations; 6–8 weeks for custom options.
