9907-802 Woodward turbine controller

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Product basic information
Manufacturer: Woodward
Model: 9907-802
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
9907-802 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 9907-802 controller debugger module Motor touch screen WOODWARD

9907-802 Woodward turbine controller

The 9907-802 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 9907-802
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:
- 9907-802 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.

2、 Classification of Drivers

1. Classified by energy conversion method: Drivers can be divided into electric drivers, hydraulic drivers, pneumatic drivers, etc.

2. Classified by motion mode: Drivers can be divided into linear motion drivers, rotary motion drivers, swing motion drivers, etc.

3. Classified by control method: Drivers can be divided into open-loop drivers, closed-loop drivers, semi closed-loop drivers, etc.

4. Classified by function: Drivers can be divided into positioning drivers, speed regulating drivers, synchronous drivers, etc.

3、 The working principle of the driver

1. Electric drive: The electric drive converts electrical energy into mechanical energy through an electric motor to achieve the operation

of mechanical equipment. The working principle of electric motors mainly includes DC motors, AC motors, stepper motors, servo motors, etc.

2. Hydraulic Drive: Hydraulic drives convert hydraulic pressure energy into mechanical energy through hydraulic pumps, enabling the

operation of mechanical equipment. The working principle of hydraulic actuators includes the collaborative work of components such as

hydraulic pumps, hydraulic cylinders, and hydraulic valves.

3. Pneumatic actuator: Pneumatic actuators convert gas pressure energy into mechanical energy through pneumatic components to achieve

the operation of mechanical equipment. The working principle of pneumatic actuators includes the coordinated operation of components such as pneumatic cylinders, pneumatic valves, and air sources.

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: 9907-802 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).
9907-802 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 9907-802Suitable 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.