Woodward 8270-092 Price Discount | In Stock
1.8270-092 Product Overview
The Woodward 8270-092 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. 8270-092 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 8270-092 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.
Motion controllers are classified based on the principle of position control:
Motion controllers can be divided into three basic types based on the principle of position control, namely the presence or absence of detection feedback sensors
and their detection devices: open-loop, semi closed loop, and closed-loop motion controllers.
1. Open-loop control motion controller
There is no position detection feedback device, and its execution motor generally uses a stepper motor. The biggest features of this type of motion controller are
convenient control, simple structure, and low price. The displacement command signal flow issued by the motion controller is unidirectional, so there is no stability issue.
However, due to the lack of feedback correction for mechanical transmission errors, the position accuracy is generally not high.
2. Semi closed loop control motion controller
The position feedback adopts a corner detection element, which is directly installed at the end of the servo motor or screw. Due to its position feedback control,
high positioning accuracy can be achieved, and most mechanical transmission components are not included in the closed-loop system, thus obtaining relatively
stable control characteristics. Mechanical transmission errors such as lead screws cannot be corrected through feedback, but software fixed value compensation
can be used to appropriately improve their accuracy.
3. Fully closed-loop control motion controller
By using detection elements such as gratings to detect the position of the controlled unit, transmission errors in the entire mechanical transmission chain from the
motor to the controlled unit can be eliminated, resulting in high static positioning accuracy. However, due to the nonlinear friction characteristics, rigidity, and clearance
of many mechanical transmission links within the entire control loop, and the large dynamic response time (compared to electrical response time) of the entire mechanical
transmission chain, it is difficult to calibrate the stability of the entire closed-loop system, and the design and adjustment of the motion controller are also quite complex.
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