Woodward 8200-1204 |CPU Module, Origin: United States
1.8200-1204 Product Overview
The Woodward 8200-1204 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. 8200-1204 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 8200-1204 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.
What is the principle of line driver?
What is the principle of line driver?
The key to the excellent performance of modern communication transmission is the digital modulation and demodulation technology
based on high-speed digital signal processing technology. However, in order to send the modulated signal to the twisted pair without
distortion and meet the required output power, a high-performance analog interface circuit is needed. The analog interface circuit mainly
consists of a line driver circuit, a line receiver circuit, and a hybrid circuit.
Basic Principles
Here, we briefly introduce the requirements of ADSL for line driver amplifier circuits and practical circuits for line driver circuits.
The ADSL specification uses discrete multi tone modulation technology. When the phase of the modulated signals on each subcarrier
frequency is consistent, the signal peaks appear. To avoid clipping distortion, the line driver amplifier needs to have a large distortion free
dynamic range. The ratio of the peak to effective level of a signal is called the peak to average ratio or “peak factor”, and the peak factor of DMT
signals in ADSL systems is 5.3. The following table summarizes the characteristic parameters and electrical requirements of ADSL systems.
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