9907-345 Woodward overspeed protector

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Product basic information
Manufacturer: Woodward
Model: 9907-345
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
9907-345 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 9907-345 controller debugger module Motor touch screen WOODWARD

9907-345 Woodward overspeed protector

The 9907-345 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 9907-345
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:
- 9907-345 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.

Future Development Trends of Gate Drivers
1. Highly integrated and modular
With the increasing demand for integration and reliability in power electronic systems, gate drivers will tend towards higher integration and modular design.

Highly integrated gate drivers can integrate multiple functional units into one chip or package, thereby reducing size, lowering power consumption, and improving reliability.

Meanwhile, modular design can combine gate drivers with other related circuits or functional modules to form independent subsystems

or module units, facilitating system design and maintenance.

2. Intelligence and Networking
With the development of the Internet of Things and intelligent manufacturing technology, gate drivers will gradually achieve intelligence and networking. Intelligent gate drivers

will integrate more sensors and intelligent control algorithms to achieve self-monitoring, self diagnosis, and self-protection functions;

Networked grid drivers can communicate and exchange data with other devices or systems through the Internet or

LAN to achieve remote monitoring, remote control, remote maintenance and other functions. The implementation of these functions will

greatly improve the intelligence level and operational efficiency of power electronic systems.

3. Greening and Sustainable Development
With the increasing global emphasis on environmental protection and sustainable development, gate drivers will also move towards green

and sustainable development. Green gate drivers will be manufactured and produced using more environmentally friendly materials and processes;

At the same time, measures such as optimizing control algorithms and reducing power consumption will be taken to reduce energy consumption and emissions

of pollutants. In addition, gate drivers will be combined with renewable energy technologies to promote the application and development of power electronic systems in the field of renewable energy.

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: 9907-345 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).
9907-345 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 9907-345Suitable 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.