Woodward 5466-352 | Governor | Controller | Potential Converter
1.5466-352 Product Overview
The Woodward 5466-352 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. 5466-352 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 5466-352 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.
Most loads, whether inductive or capacitive, require a modulation frequency higher than 10Hz. Imagine if a light bulb were to be turned on for 5
seconds, then turned off for 5 seconds, and then turned on and off again. The duty cycle is still 50%, but the bulb will light up in the first 5
seconds and turn off in the next 5 seconds. To achieve a power supply effect of 4.5V voltage for the light bulb, the on-off cycle period must be
sufficiently short compared to the response time of the load to switch state changes. To achieve the effect of dimming
the light (but keep it on), it is necessary to increase the modulation frequency. The same requirements also apply in other PWM applications.
The usual modulation frequency is between 1kHz and 200kHz.
hardware controller
Many microcontrollers contain PWM controllers internally. For example, Microchip”s PIC16C67 contains two PWM controllers, each of which can choose
the on-time and cycle. Duty cycle is the ratio of on-time to cycle; The modulation frequency is the reciprocal of the period. Before performing PWM operations,
this microprocessor requires the following tasks to be completed in software:
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