A8516-042 Woodward overspeed protector

Price:

Product basic information
Manufacturer: Woodward
Model: A8516-042
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
A8516-042 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator A8516-042 controller debugger module Motor touch screen WOODWARD

A8516-042 Woodward overspeed protector

The A8516-042 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 A8516-042
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:
- A8516-042 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.

4、 Application scenarios
Half bridge driver:

Suitable for application scenarios that are cost sensitive and do not require particularly high control accuracy. For example,

it is widely used in some basic motor control, power conversion and other occasions.
Full bridge driver:

Suitable for application scenarios that require high control accuracy and performance. For example, it is widely used in fields such as

electric vehicles, robotics technology, and industrial automation. These fields typically require precise control of parameters such as

motor steering, speed, and position to achieve efficient and stable operation.
V. Summary
There are significant differences between half bridge drivers and full bridge drivers in terms of structure, working principle, performance

characteristics, and application scenarios. The choice of which driving method to use needs to be balanced based on the specific requirements

of the application scenario. For example, in situations where cost is sensitive and control accuracy is not particularly high, half bridge drivers can be chosen;

In situations where high control accuracy and performance are required and cost is not the main consideration, it is more suitable to choose a full bridge driver.

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: A8516-042 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).
A8516-042 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: A8516-042Suitable 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.