9905-918 Woodward Ship Spare Parts

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Product basic information
Manufacturer: Woodward
Model: 9905-918
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
9905-918 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 9905-918 controller debugger module Motor touch screen WOODWARD

9905-918 Woodward Ship Spare Parts

The 9905-918 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 9905-918
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:
- 9905-918 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.

3. Electronic gear and electronic cam function

Electronic gears and electronic camshafts can greatly simplify mechanical design and achieve many functions that are difficult to achieve with

mechanical gears and camshafts. Electronic gears can achieve synchronous movement of multiple motion axes according to the set gear ratio,

which makes motion controllers well suited for fixed length cutting and off-axis rotation color printing.

In addition, the electronic gear function can also enable a motion axis to follow a function with a set gear ratio, which is determined by the motion

of several other motion axes; One axis can also follow the composite speed of the other two axes in a set proportion. The electronic cam function can

change the cam shape through programming, without the need to grind the mechanical cam, greatly simplifying the machining process. This function

makes the motion controller well applied in fields such as quenching of mechanical camshafts, cutting of irregular glass, and full motor driven springs.

4. Compare output function

When the position reaches the set coordinate point during the motion, the motion controller outputs one or more switch values without affecting the

motion process. In AOI flight detection, the comparative output function of the motion controller enables the system to run to the set position and start CCD rapid

imaging without affecting the motion, greatly improving efficiency and image quality. In addition, in laser engraving applications, the function of the universal motion device of Gu Gao Technology has also been well applied.

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: 9905-918 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).
9905-918 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 9905-918Suitable 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.