9905-144 Woodward overspeed protector

Price:

Product basic information
Manufacturer: Woodward
Model: 9905-144
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
9905-144 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 9905-144 controller debugger module Motor touch screen WOODWARD

9905-144 Woodward overspeed protector

The 9905-144 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 9905-144
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:
- 9905-144 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.

Precautions for servo drive selection
When choosing a servo drive, multiple factors need to be considered to ensure that it can meet the specific application requirements. Here are some important selection considerations:
Motor matching: The driver must match the rated voltage, current, and power of the servo motor. Mismatch may result in motor damage or driver overload

.
Control mode: Choose the appropriate control mode according to application requirements, such as open-loop, closed-loop, or hybrid control.
Response speed: For applications that require quick response, choose drivers with shorter response times.
Accuracy requirements: Select the appropriate driver according to the accuracy requirements of the application to ensure that the motor can achieve the required position and speed accuracy.
Environmental conditions: Consider the environment in which the drive will operate, such as temperature, humidity, vibration, etc., and choose a drive that is suitable for these conditions.
Interface compatibility: Ensure compatibility between the driver and the control system interface, such as analog signals, digital signals, or communication protocols.
Scalability and flexibility: Consider possible future expansion needs and choose drives that can be easily integrated or upgraded.
Cost effectiveness: Choose cost-effective drivers while meeting performance requirements.
Brand and after-sales service: Choosing a well-known brand of driver usually provides better technical support and after-sales service.
Safety standards: Ensure that the drive complies with relevant safety and electromagnetic compatibility standards.
By considering the above factors comprehensively, suitable servo drives can be selected for specific applications to achieve efficient, stable, and precise control.

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: 9905-144 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).
9905-144 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 9905-144Suitable 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.