Woodward 8400-016 505 Turbine Control | 100% Original
1.8400-016 Product Overview
The Woodward 8400-016 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.
contacts： Mike
+86 18350224834 （WeChat/WhatsApp）
Email：Mike18350224834@gmail.com
2. 8400-016 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 8400-016 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.
control characteristics
PWM controllers are highly sensitive to signal switching frequency and duty cycle, and can accurately control the average
output level. It can quickly respond and adjust output, but does not have adaptive capabilities. The advantages of PWM controllers
are simplicity, intuitiveness, ease of implementation, and low cost, making them suitable for applications that do not require high control accuracy.
4、 Comparison between PID Controller and PWM Controller
Principle comparison
The PID controller is based on the principle of error feedback regulation, which measures the difference between the output value of the
controlled object and the expected value (i.e. error), and then processes the error according to proportional, integral, and derivative control
terms to obtain the output of the controller. The PWM controller controls the voltage and current in the circuit by changing the pulse width,
achieving control over the average level of the output signal.
Application comparison
PID controllers are suitable for application scenarios that require precise control and stability, such as temperature control, position control,
speed control, etc. PWM controllers are commonly used in applications that require simulating continuous signals, such as DC motor speed
control, LED brightness adjustment, audio amplifiers, etc. Due to the lack of adaptive capability in PWM controllers, they may not be suitable for applications that require high control accuracy.
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