Woodward 8440-1946 505 Turbine Control | 100% Original
1.8440-1946 Product Overview
The Woodward 8440-1946 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.
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2. 8440-1946 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 8440-1946 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.
2、 Classification of Drivers
Drivers can be classified into the following categories based on their energy conversion methods:
1. Electric drive: Electric drives convert electrical energy into mechanical energy through electromagnetic conversion.
Electric drivers include DC motor drivers, AC motor drivers, stepper motor drivers, servo motor drivers, etc.
2. Pneumatic actuator: Pneumatic actuators convert pneumatic energy into mechanical energy through pneumatic
conversion. Pneumatic actuators include cylinders, pneumatic motors, and pneumatic fixtures.
3. Hydraulic Drive: Hydraulic drives convert hydraulic energy into mechanical energy through hydraulic conversion.
Hydraulic actuators include hydraulic cylinders, hydraulic motors, and hydraulic pumps.
3、 Characteristics of Drivers
1. High efficiency: The energy conversion efficiency of the driver is high, which can convert most of the input energy into
mechanical energy, thereby achieving efficient driving.
2. High precision: The driver has high-precision motion control capability and can achieve precise driving of the load.
3. High reliability: The design and manufacturing process of the driver are mature, with high reliability and stability.
4. Easy to control: The interface between the driver and the control system is simple, making it easy to integrate with the control system.
5. Strong adaptability: Drivers can choose different driving and control methods according to different application requirements.
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