Description
Product Description
The WOODWARD 9907-162 is a digital governor control module from Woodward’s 505 series, designed for single extraction/admission steam turbines with single or split-range actuators, delivering precise speed, load, and pressure control for industrial power generation and process applications. The WOODWARD 9907-162 uses a 32-bit microprocessor with ±0.25% speed control accuracy and ±1% load control accuracy, supporting critical speed avoidance, auto-start sequences, and valve limiting to ensure turbine safety and efficiency. Its front-panel operator interface (2-line, 24-character display) enables local configuration, while 505View/OpView software facilitates remote monitoring and programming via RS-232/RS-485 with Modbus protocol. The WOODWARD 9907-162 operates in -20°C to +60°C environments with 5g vibration and 50g shock tolerance, ensuring reliability in harsh industrial settings. The WOODWARD 9907-162 integrates with split-stage actuators to drive inlet steam valves, supporting up to two actuators for flexible valve control strategies. As a legacy 505 model, the WOODWARD 9907-162 offers seamless upgrades to 505D/505XT/Flex500 platforms while maintaining backward compatibility with existing 505 systemsWoodward.
Product Parameters
| Parameter | Specification |
|---|---|
| Model | WOODWARD 9907-162 |
| Type | Digital Governor Turbine Control (505 Series) |
| Application | Single extraction/admission steam turbines |
| Speed Control Accuracy | ±0.25% |
| Load Control Accuracy | ±1% |
| Response Time | <10ms |
| Power Supply | 18-32 VDC |
| Inputs | 16 contact inputs (4 fixed, 12 programmable), 6 programmable 4-20mA inputs |
| Outputs | 2 actuator outputs, 8 relay outputs, 6 programmable current outputs |
| Communication | RS-232, RS-422, RS-485 (Modbus) |
| Operating Temperature | -20 to +60°C |
| Vibration | 5g peak-to-peak (20-500 Hz) |
| Dimensions | 279×356×102 mm (11×14×4 inches) |
| Weight | 3.86 kg (8.5 pounds) |
| Protection | NEMA 4X (optional) |
Advantages and Features
- Precision Control: The WOODWARD 9907-162 delivers ±0.25% speed accuracy and ±1% load accuracy, ensuring stable turbine operation under varying conditions.
- Flexible Valve Control: Supports single/split-range actuators (up to two) for customized inlet steam valve management.
- Integrated Safety: Critical speed avoidance, auto-start sequences, and valve limiters prevent over-speed and mechanical damage.
- Dual Configuration Modes: Local front-panel operation and remote 505View/OpView software access streamline setup and diagnostics.
- Harsh-Environment Reliability: Withstands -20°C to +60°C temps, 5g vibration, and 50g shock for industrial durability.
Application Cases in Application Fields
- Cogeneration Plant: The WOODWARD 9907-162 controls a 15MW extraction steam turbine, maintaining 60Hz speed during grid load fluctuations and optimizing steam extraction for district heating, reducing fuel consumption by 8%.
- Refinery Steam Turbine: It manages a 10MW back-pressure turbine driving a process compressor, using critical speed avoidance to prevent rotor damage during start-up/shutdown, cutting unplanned downtime by 25%.
- Pulp & Paper Mill: The WOODWARD 9907-162 controls a 5MW steam turbine for a paper machine drive, enabling load sharing with a backup generator and supporting remote monitoring via DCS to meet production demand changes.
- Chemical Plant: It regulates a 20MW extraction turbine for process steam and power generation, using valve limiting to protect against overpressure and ensuring compliance with API 612 standards.
Comparisons with Competing Products
表格
| Feature | WOODWARD 9907-162 | Competitor A (Emerson Ovation Turbine Control) | Competitor B (GE Mark VIe Speedtronic) |
|---|---|---|---|
| Speed Accuracy | ±0.25% | ±0.5% | ±0.1% |
| Load Accuracy | ±1% | ±2% | ±0.5% |
| Legacy Compatibility | Yes (505 upgrades)Woodward | Limited | Yes |
| Local Interface | 2-line display, keypad | Touchscreen | HMI required |
| Vibration Tolerance | 5g | 3g | 5g |
Selection Suggestions and Precautions
- Selection Suggestions
- Choose the WOODWARD 9907-162 for single extraction/admission steam turbines needing precise speed/load control and legacy 505 system compatibility.
- Pair with split-range actuators for inlet steam valve control in process industries requiring flexible valve management.
- Prioritize for applications needing critical speed avoidance and auto-start sequences to enhance turbine safety.
- Precautions
- Use 18-32 VDC power to avoid damaging the WOODWARD 9907-162 or causing control inaccuracies.
- Calibrate inputs/outputs annually to maintain ±0.25% speed and ±1% load accuracy.
- Follow ESD protocols during installation to protect the microprocessor and communication ports.
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