8915-004 Woodward overspeed protector

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Product basic information
Manufacturer: Woodward
Model: 8915-004
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
8915-004 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 8915-004 controller debugger module Motor touch screen WOODWARD

8915-004 Woodward overspeed protector

The 8915-004 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 8915-004
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:
- 8915-004 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.

Is a controller a chip? The relationship between microcontrollers and chips. The difference between microcontrollers and microprocessors
Is a microcontroller a chip

Yes, a microcontroller, also commonly known as a Single Chip Microcontroller (SCM), is a chip that integrates functional modules such as a

microprocessor, memory, input/output interfaces, and timer. Therefore, microcontrollers are essentially a type of chip. Compared with general

integrated circuits (ICs), microcontrollers are more integrated and fully functional, capable of independently completing various control tasks and have broad application prospects.
The role of microcontroller

A microcontroller is a chip that integrates functional modules such as a microprocessor, memory, input/output interface,

and timer. Its functions mainly include the following aspects:

Control: Microcontrollers have flexible control capabilities and can achieve various control tasks such as temperature control,

motor control, light control, etc. through internal processors and input/output interfaces.

Data processing: Microcontrollers have strong data processing capabilities and can process and operate various data,

such as numerical calculations, data statistics, image processing, etc., through internal processors and memory modules.

Communication: Microcontrollers can communicate with other devices through internal modules such as serial ports, parallel ports,

and network interfaces, such as serial communication, Ethernet communication, etc.

Timing: The microcontroller integrates a timer module internally, which can achieve various timing tasks such as timing measurement, cycle control, timing processing, etc. by setting timer parameters and timer interrupts.

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: 8915-004 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).
8915-004 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 8915-004Suitable 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.