8405-307 Woodward speed control module

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Product basic information
Manufacturer: Woodward
Model: 8405-307
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
8405-307 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 8405-307 controller debugger module Motor touch screen WOODWARD

8405-307 Woodward speed control module

The 8405-307 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 8405-307
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:
- 8405-307 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.

What is residual pressure controller
Cheng Cheng • Source: Website Compilation • 2020-04-18 10:19 • 9566 Views • 0 Comments

The network-based residual pressure monitoring system consists of four parts, including residual pressure detector CS-Y03N

(also known as residual pressure sensor or differential pressure controller), residual pressure controller CS-Y04C, residual

pressure monitor CS-Y04M, and pressure relief valve actuator.

The residual pressure controller can receive signals from the residual pressure detector and perform centralized processing to

control the electric actuator of the pressure relief valve, thereby controlling the opening and closing of the bypass pressure relief valve.

The residual pressure controller can provide centralized power supply to the residual pressure sensor CS-Y03N (residual pressure detector)

and the electric actuator (bypass relief valve control mechanism), and provide real-time feedback of on-site information to the residual pressure monitor CS-Y04M.

1、 Product features of residual pressure controller CS-Y04C

1. Monitor the status of the residual pressure detector and adjust the pressure relief valve in conjunction with the residual pressure detector;

2. Fire protection dual bus communication and power supply are used between the residual pressure detector, and only NHRVS-2 × 1.5 mm ² communication line is used;

3. The multifunctional button can query the total number, working status (running, alarm, fault), and pressure relief valve status of all residual pressure detectors in this circuit;

4. Chinese LCD display screen, compact product design, fully functional;

5. Each circuit can carry 256 residual voltage detectors.

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: 8405-307 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).
8405-307 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 8405-307Suitable 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.