5501-466 WOODWARD Debugger unit

Price:

Product basic information
Manufacturer: Woodward
Model: 5501-466
Belonging to the famous 505 series
Supports multiple communication protocols and can be smoothly integrated with the existing control system of the factory
Core application: Designed specifically for speed control and protection of steam turbines
5501-466 controller has stable performance and high reliability

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5501-466 WOODWARD Debugger unit

The 5501-466 is a microprocessor-based digital governor controller produced by Woodward, belonging to its classic 505 series.
It is primarily designed for speed control and protection of steam turbines. Below is a detailed introduction to this product:

I. Product Overview

Brand and Model: Woodward 5501-466
Series: 505 Series Digital Governor
Type: Microprocessor-based controller
Purpose: Specifically designed for steam turbines to control their speed and provide overspeed protection.

II. Core Functions

Speed Control:
- 5501-466 Precisely controls the speed of steam turbines by adjusting steam inlet flow.
- Supports single-range or split-range actuators to accommodate turbines of different sizes.
Overspeed Protection:
- Incorporates triple independent overspeed protection logic to ensure rapid shutdown in case of overspeed, preventing equipment damage.
- Provides an overspeed test button for convenient on-site testing of protection functions.
Emergency Shutdown:
- Equipped with an emergency stop button for immediate shutdown in emergency situations.
System Protection:
- - Automatically switches control modes upon sensor failure to ensure uninterrupted system operation.
  - Offers local/remote control priority selection to adapt to different operational scenarios.

The starter kit can be obtained from manufacturers like Parallax or suppliers like Jameco. If you have read articles about door closing circuits and digital clocks, you will be familiar with Jameco company. You can order the “BASIC Stamp D Starter Kit” (part number 27202) from Parallax, and the starter kit with part number 140089 from Jameco. You will receive a Stamp (as shown below), programming cable, software, and operating instructions. The pricing for both companies is $79. Sometimes, Parallax releases a special version of the starter kit called “Essential Basics, All in One”, which includes Scott Edward’s book “Programming and Customizing the BASIC Stamp Computer” in addition to the aforementioned content.

The connection of Stamp is very easy. You just need to connect it to the parallel port of the computer, run a DOS application to edit your BASIC program, and download the program to Stamp. Here is a screenshot of a typical editor (selected from Scott Edward’s book):

Principles and Applications of Microcontrollers

To run the program in this editor, press the ALT+R key combination. The editor application will check the BASIC program and then send the program to the EEPROM (electrically erasable read-only memory) on the Stamp via cable. Subsequently, Stamp will execute the program. In this example, the program generates a square wave on I/O pin 3. If there is a logic probe or LED (Light Emitting Diode) connected to pin 3, you will see that the LED lights up and goes out twice per second, because it changes state every 250 milliseconds according to the PAUSE command. For detailed information on LED, please refer to the article on door closing circuits. A 9-volt dry battery can run this program for several weeks. Shortening the time when the LED is in the on state (such as 50 milliseconds on and 450 milliseconds off), or using the NAP r command instead of the PAUSE command, can save energy.

III. Technical Specifications

Power Supply: 18-32 VDC, supporting 24VDC input.
Display: Two-line x 24-character LED display for clear indication of operating status and parameters.
Enclosure: NEMA 4X or IEC 60529 IP56 rated for protection against harsh industrial environments.
Inputs/Outputs:
- Inputs: 6 programmable current inputs, 16 discrete contact inputs.
- Outputs: 2 actuator outputs, 8 relay outputs, 6 programmable current outputs.
Communication Interfaces: 5501-466 Supports RS-232, RS-422, and RS-485 hardware interfaces for easy integration with host computers or other devices.
Software: Equipped with OpView™ and 505View software for parameter configuration, monitoring, and fault diagnosis.
Operating Temperature: -20 to +60°C (some models support -4 to +140°F).
Storage Temperature: -40 to +85°C (some models support -40 to +185°F).
5501-466 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 5501-466Suitable for steam turbines of various sizes, including industrial steam turbines, small grid turbo-generators, and turboexpanders.
Single Extraction and Admission Applications: Designed for operating steam turbines in single extraction and/or admission applications.
On-Site Programming: Allows on-site operators to program and adjust parameters through an integrated operator control panel, adapting to different operating conditions.

V. Product Advantages

High Reliability:
- Microprocessor-based design ensures precise control and stability.
- Triple independent overspeed protection logic provides multiple layers of safety.
Flexibility:
- Supports various actuator and sensor configurations to accommodate different turbine models.
- Offers a rich set of input/output interfaces for easy system expansion and integration.
Ease of Use:
- Two-line x 24-character LED display provides an intuitive operating interface.
- A 30-key multifunctional keyboard simplifies parameter configuration and operation.
Compatibility:
- Supports multiple communication protocols for easy integration with DCS, PLC, and other systems.
- Provides OpView™ and 505View software for remote monitoring and fault diagnosis.