Woodward 9905-204 Price Discount | In Stock
1.9905-204 Product Overview
The Woodward 9905-204 belongs to the 505/505E series digital turbine controllers. It is a microprocessor-based control module designed for single-valve steam turbines,
including single extraction/admission systems or split-range actuator configurations.
The controller features a front panel Operator Control Panel (OCP) with a two-line, 24-character display and multi-function keypad, allowing easy on-site configuration and monitoring.
2. 9905-204 Technical Specifications and Parameters
| Parameter | Details |
|---|---|
| Power Supply | +24 VDC, approx. 1 A |
| I/O Outputs | Discrete Outputs: 8 Analog Outputs: 6 Actuator Outputs: 2 |
| Display / HMI | Two-line, 24-character LCD, with multi-function keypad |
| Dimensions | Approx. 14 × 11 × 4 in (35.6 × 27.9 × 10.2 cm) |
| Weight | Approx. 9.11 lbs (4.13 kg) |
| Operating Temperature | –4 to +140 °F (–20 to +60 °C) |
| Storage Temperature | –40 to +185 °F (–40 to +85 °C) |
| Humidity Standard | 95% RH at 20-55 °C for 48 hours without damage |
| Protection Class | Typically meets industrial dust and water protection standards |
| Communication Protocol | Supports Modbus, RS-232 / RS-422 serial interfaces |
3. Brand History
Woodward, Inc., founded in 1870 and headquartered in Fort Collins, Colorado, USA, is a global leader in energy control systems. The company has a long history of innovation in turbine control, engine management,
and power generation systems.
Woodward products are widely recognized for their reliability and precision in demanding industrial and power generation applications.
4. Applications in Industrial Automation
The 9905-204 plays a critical role in industrial automation and power generation environments:
- Steam Turbine Control: Manages startup, speed regulation, and extraction/admission control of steam turbines.
- Power Generation Systems: Used in power plants to regulate turbine-driven generators for stable frequency and load management.
- Compressor and Pump Drive Control: Ensures precise speed control for turbine-driven compressors and pumps.
- Process Industry Applications: Applied in chemical plants, refineries, and other industries requiring precise turbine operation.
- Safety and Protection Functions: Includes overspeed protection, critical speed avoidance, actuator travel limits, and event logging for operational safety.
3. Gradual adjustment: When adjusting the current, the current value should be gradually increased or decreased, and the operating status and response
of the equipment should be observed to avoid damage caused by overcurrent or overload.
4. Monitoring current: When adjusting the current controller, measuring tools such as ammeters should be used to monitor the current value in real time to
ensure that the current fluctuates within the allowable range.
5. Maintain ventilation: When adjusting the current controller, attention should be paid to maintaining good ventilation around the equipment to avoid equipment
damage or performance degradation due to overheating.
6. Regular maintenance: Regular maintenance and inspection of the current controller can promptly detect and solve potential problems, ensuring the normal
operation of the equipment and extending its service life.
V. Summary
The regulation of current controller is a very important link in electronic devices and power systems. By adjusting parameters such as resistance, capacitance,
inductance, and voltage, precise control of current in the circuit can be achieved. In specific application scenarios, such as electric vehicles, industrial equipment,
household appliances, and electronic musical instruments, the adjustment methods of current controllers may vary. Therefore, when adjusting the current controller,
it is necessary to fully understand the working principle and control requirements of the equipment, and follow the operating guidelines of the equipment manufacturer.
At the same time, attention should also be paid to safety first, gradual adjustment, monitoring of current, maintaining ventilation, and regular maintenance to
ensure the normal operation of equipment and extend its service life.
Through the discussion in this article, it is believed that readers have gained a deeper understanding of the adjustment methods of current controllers. In practical operation,
appropriate adjustment methods should be selected according to specific application scenarios and requirements, and relevant operation guidelines and safety regulations
should be followed to ensure the correct adjustment of the current controller and the stable operation of the equipment.
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