5439-751 Woodward speed control module

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Product basic information
Manufacturer: Woodward
Model: 5439-751
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
5439-751 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 5439-751 controller debugger module Motor touch screen WOODWARD

5439-751 Woodward speed control module

The 5439-751 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 5439-751
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:
- 5439-751 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） DLT/SDLT tape drive
DLT (digital linear tape) technology, also known as digital linear tape technology, was first developed by DEC in 1985 and is mainly used in VAX systems.

Later, it was purchased by Kunteng Company and its technology was improved. DLT adopts linear recording technology, which is characterized by large

capacity and high speed, but at a higher price. DLT products are mainly used in the mid to high end server market and tape library application systems,

with a rapidly growing market share. At present, the capacity of DLT drives varies from 10GB to 40GB, with data transfer speeds ranging from 1.25MB/s to 5MB/s.

Super DLT (SDLT) technology was launched by Quantum Corporation in 2001.

The capacity of SDLT is 110GB, nearly three times that of DLT tape series products, and the transfer rate is 11MB/s, twice that of DLT. Although SDLT

has made many improvements to DLT tapes, it is still compatible with the earliest DLT tapes and has good read back compatibility with DLT 4000, 7000, and 8000 drives.
（3） VXA tape drive
VXA is Exabyte”s latest tape drive technology positioned in the low-end market. The first generation product of VXA technology, VXA-1 tape equipment,

has a single machine capacity of 66GB and a data transfer rate of 6MB/s (compressed). Its capacity and performance are three times that of DDS-3, and its speed is the same as DDS-4, but its capacity exceeds DDS-4.
（4） AIT Tape Drive
AIT (Advanced Intelligent Tape) was developed by Sony and launched on the market in 1996. AIT-3 can write 100GB (260GB, compressed) of data to a

230m long 8mm magnetic tape at a sustained data transfer rate of 12MB/s (31MB/s, compressed), which is as high as the storage capacity provided by LTO media, but occupies only one-third of the space of LTO.

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: 5439-751 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).
5439-751 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 5439-751Suitable 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.