Woodward 1790-9026 505 Turbine Control | 100% Original
1.1790-9026 Product Overview
The Woodward 1790-9026 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. 1790-9026 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 1790-9026 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.
Step 7: Check the supply status of components
After determining the list of alternative components, we can now start checking the supply status of the components.
The following points need to be remembered: What is the lead time for stocking components? Do multiple distributors have inventory?
Or does it require a stocking cycle of 6-12 weeks? What are your requirements for supply? You don”t want to get stuck
in a big order dilemma and have to wait for three months to fulfill the order.
The next question is the age of the components and whether they will remain in supply throughout the lifecycle of your
product. If your product is to be supplied within 10 years, then you need to look for manufacturers who guarantee the
production of components within 10 years.
Step 8: Choose a development kit
One of the most wonderful stages when choosing a new microcontroller is finding a development kit that can be
researched and understanding the internal workings of the controller. Once engineers have identified their preferred
components, they should investigate which development kits are available.
If there is no available development kit, it is very likely that the selected component is not the best choice, and then
you should take a few steps back to find a better component.
Nowadays, most development kits are priced within $100. If it exceeds this price (unless it is designed for multiple
processor modules), then it is clearly too high. Other components may be more suitable.
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