5461-798 Woodward speed control module

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Product basic information
Manufacturer: Woodward
Model: 5461-798
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
5461-798 controller has stable performance and high reliability

Categories: WOODWARD
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5461-798 Woodward speed control module

The 5461-798 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 5461-798
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:
- 5461-798 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.

Automotive Distributed EEA

In order to solve these problems of distributed EEA, people have gradually integrated many ECU functions that are similar or separated into

a processor hardware platform with stronger performance than ECU, which is the automotive “Domain Control Unit (DCU)”. The emergence of

domain controllers is an important milestone in the evolution of automotive EE architecture from ECU distributed EE architecture to domain centralized EE

architecture (as shown in Figure 2-2).

The domain controller is the core of every functional domain in the automotive industry, mainly composed of three parts: the domain main control processor,

the operating system, and application software and algorithms. Platformization, high integration, high performance, and good compatibility are the main core

design ideas of domain controllers. By relying on high-performance domain controller processors, abundant hardware interface resources, and powerful software features, domain controllers can integrate core

functions that originally required many ECUs, greatly improving system functionality integration. In addition, standardized interfaces for data exchange can greatly reduce

the development and manufacturing costs of this part.

For the specific division of functional domains, each automotive host manufacturer will divide them into several different domains based on their own design concepts

. For example, BOSCH is divided into five domains: Power Train, Chassis, Body/Comfort, Cockpit/Entertainment, and ADAS.

This is also the most classic five domain centralized EEA, as shown in Figure 2-2. Some manufacturers further integrate the five domain centralized architecture, merging the

original power domain, chassis domain, and body domain into the vehicle

control domain, thus forming a three domain centralized EEA, namely: Vehicle Control Domain Controller (VDC), ADASAD Domain Controller (ADC), and Cockpit Domain

Controller (CDC). Both Volkswagen”s MEB platform and Huawei”s CC architecture belong to this three domain centralized EEA.

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: 5461-798 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).
5461-798 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 5461-798Suitable 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.