Woodward 9905-363 |CPU Module, Origin: United States
1.9905-363 Product Overview
The Woodward 9905-363 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. 9905-363 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 9905-363 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 does PWM controller mean
March 23, 2010 13:35 www.elecfans.com Author: Anonymous User Comment (0)
Keywords: Controller (168368) PWM (208388) PWM Controller (35392)
What does PWM controller mean
The Basic Principles and Application Examples of Pulse Width Modulation
Pulse width modulation (PWM) is a highly effective technique for controlling analog circuits using the digital output of microprocessors.
It is widely used in many fields, from measurement and communication to power control and conversion.
analog circuit
The value of an analog signal can vary continuously, with no limitations on its time and amplitude resolution. A 9V battery is an analog
device because its output voltage is not exactly equal to 9V, but varies over time and can take any real value. Similarly, the current absorbed
from the battery is not limited to a set of possible values. The difference between analog signals and digital signals is that the values
of the latter can usually only belong to a predetermined set of possible values, such as in the set of {0V, 5V}. Analog voltage and current can
be directly used for control, such as controlling the volume of a car radio. In a simple analog radio, the volume knob is connected to a variable
resistor. When turning the knob, the resistance value increases or decreases; The current flowing through this resistor also increases or decreases
, thereby changing the current value that drives the speaker, causing the volume to increase or decrease
accordingly. Like a radio, the output of an analog circuit is linearly proportional to the input.
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