5437-687 Woodward overspeed protector

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Product basic information
Manufacturer: Woodward
Model: 5437-687
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
5437-687 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 5437-687 controller debugger module Motor touch screen WOODWARD

5437-687 Woodward overspeed protector

The 5437-687 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 5437-687
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:
- 5437-687 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.

To achieve the specified output power, the requirement for the output current of the line driven amplifier will correspondingly increase. Therefore, according to the requirements in the table above, the following indicators should be met when selecting ADSL line driver amplifiers:

With the rapid growth of the xDSL market, several semiconductor companies have launched line driven amplifiers suitable for xDSL applications, including Analog Device’s AD815 and AD8016, Linear Tech’s LT1210, TI’s THS6002 and THS6012. AD8016, as a low-power and high output current dual amplifier designed specifically for the line driver interface of xDSL systems, is currently one of the best xDSL line drivers on the market. AD8016 is manufactured using ADI’s patented technology – dielectric isolation ultra high speed complementary bipolar XFCB process, and adopts current feedback form, thus possessing the characteristics of high bandwidth, high driving current, and low distortion that meet the requirements of xDSL applications. AD8016 also has two power management pins PWDN1 and PWDN2, which can be set to logic+1 respectively; 0 “can operate at four power consumption levels (100%, 60%, 40%, 25%), and can flexibly adapt to various ADSL standard applications from the central office to the user end.

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: 5437-687 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).
5437-687 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 5437-687Suitable 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:
- 5437-687 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.