Woodward 9907-1183
Woodward 9907-1183 (505E Low-Voltage Digital Turbine Governor) Technical Specifications
| Item | Specification |
|---|---|
| Part Number | 9907-1183 |
| Official Model Name | 505E Enhanced Digital Turbine Governor (24V Low-Voltage Version) |
| Manufacturer | Woodward, USA |
| Core Processor | 32-bit high-speed microcontroller |
| Primary Function | Closed-loop speed, load, extraction/admission pressure control for steam turbines |
| Nominal Power Supply | 24 V DC |
| Operating DC Voltage Range | 18 V DC ~ 32 V DC |
| Typical Power Consumption | ≤ 25 W |
| Main HMI Interface | Integrated membrane keypad + multi-line LCD display |
| Analog Input Channels | 6 isolated analog inputs (4–20 mA / 0–10 V selectable) |
| Analog Output Channels | 6 isolated analog outputs (4–20 mA drive for servo actuators) |
| Serial Communication Ports | 2 independent Modbus RTU/ASCII ports (RS485) |
| Configuration Software | Woodward Control Assistant PC software |
| Speed Regulation Steady-State Accuracy | ±0.25% rated speed |
| Control Loop Execution Time | < 10 ms cycle time |
| Built-in Control Algorithms | PID speed control, extraction/admission PID, load sharing, ratio limiter, over-speed protection logic |
| Safety Functions | Zero-speed detection, turbine over-speed trip, parameter password protection |
| Front Panel Protection Rating | IP54 (dust & splash resistant) |
| Rear Terminal Protection Class | IP20 |
| Continuous Operating Temperature | -40 °C ~ +70 °C |
| Recommended Stable Working Range | -25 °C ~ +65 °C |
| Storage & Transit Temperature | -40 °C ~ +85 °C |
| Ambient Humidity | 5%–95% RH, non-condensing |
| Overall Dimension (W × H × D) | 356 mm × 279 mm × 102 mm |
| Net Unit Weight | Approx. 1.8 kg |
| Mounting Type | Panel flush mounting for control cabinet |
| Conformal Coating | Sulfur-resistant conformal coated circuit board |
| Compatibility | Standalone operation or integration with plant DCS systems |
| Typical Applications | Utility steam turbogenerators, industrial extraction steam turbines, turboexpanders, mechanical drive compressors in power & petrochemical plants |
| Certifications | CE, industrial EMC compliance, Class I Division 2 hazardous location rated |
