Woodward 9907-1177 from SAUL ELECTRIC | In Stock
1.9907-1177 Product Overview
The Woodward 9907-1177 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. 9907-1177 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 9907-1177 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 nature of the controlled variable and the motion control method:
1. Position control
The position control of the motion controller can be divided into point-to-point motion control and continuous trajectory motion control according to the control principle.
Point position control is a point-to-point positioning control that does not control the motion trajectory between points, nor does it perform processing
or measurement during this process.
Continuous trajectory control is divided into linear control and contour control. Linear control refers to the linear motion of the controlled object in
a certain direction at a certain speed (single axis or multi axis linkage), during which processing or measurement is required; Contour control is the
process of controlling the instantaneous position and velocity of two or more coordinate axes to form a contour curve or surface in a plane or space through linkage.
2. Speed control and acceleration control
The motion controller speed control can be used alone or combined with position control to form a dual loop control, but the main loop is position control,
and speed control serves as feedback correction to improve the dynamic performance of the system.
3. Synchronous control
Synchronous control of motion controller refers to the synchronous motion control of speed or position of two or more axes, such as system control with
electronic gearbox and electronic cam functions. Some require not only simultaneous startup, but also position synchronization, which requires high synchronization accuracy.
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