8570-412 Woodward overspeed protector

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Product basic information
Manufacturer: Woodward
Model: 8570-412
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
8570-412 controller has stable performance and high reliability

Categories: WOODWARD
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8570-412 Woodward overspeed protector

The 8570-412 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 8570-412
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:
- 8570-412 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.

3、 The demand in the field of industrial control

In the field of industrial control, line drivers also play an irreplaceable role. Industrial control systems typically contain a large number of sensors,

actuators, and other devices that require signal transmission for information exchange and control. The line driver can drive these signals to transmit stably in

complex industrial environments, ensuring the normal operation of the entire control system. At the same time, it also has high output power and driving capability,

which can drive longer transmission lines and multiple target devices, meeting the diverse needs of the industrial control field.

4、 Customized requirements for specific application scenarios

With the continuous advancement of technology and the expansion of application scenarios, line drivers still need to be customized according to specific

application scenarios. For example, in ADSL (Asymmetric Digital User Line) systems, the line driver needs to meet the requirement of a large distortion free

dynamic range to ensure that the signal does not experience clipping distortion during transmission. In addition, in broadband access technologies such as xDSL (Digital

User Line), line drivers also need to have high bandwidth, high driving current, and low distortion characteristics to meet the requirements of high-speed communication.

In summary, the application background of line drivers covers multiple fields such as modern communication transmission, audio and video equipment, and industrial control,

and its importance is self-evident. With the continuous advancement of technology and the expansion of application scenarios, the performance and functionality of line

drivers will also be continuously improved and perfected, providing more stable and reliable signal transmission and driving solutions for various industries.

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: 8570-412 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).
8570-412 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 8570-412Suitable 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.