WOODWARD 5441-645 Product Detailed Description

Product Model: WOODWARD 5441-645

Brand: WOODWARD (Woodward)

Product Type: NetCon 5000 / MicroNet Series Digital Speed Governor Module (Digital Governor Module)

Generation Time: 2026-05-18 11:22:28

I. Product Overview

WOODWARD 5441-645 is a dedicated digital speed governor module for the NetCon 5000 and MicroNet control systems. It is specifically designed for precise speed and load control of steam turbines, gas turbines, and engines, integrating high-performance processors and specialized control algorithms. It is a core component for achieving automated control of rotating machinery. This module is a discontinued model, and the market mainly circulates refurbished / spare parts.

II. Core Functional Characteristics

Specialized Speed Control: Built-in optimized PID, feedforward, cascade, etc. control algorithms, specifically designed for speed and load closed-loop control of steam turbines / engines.

High Precision Signal Processing: Processes speed sensor signals to achieve sub-millisecond control response, ensuring speed control accuracy.

Multiple Control Outputs: Provides PWM pulse signals and ** analog signals (0-10V)** outputs, directly driving electro-hydraulic servo valves, actuators.

Dual Mode Regulation: Supports non-differential regulation (constant speed) and differential regulation (load distribution), suitable for single-unit / grid-connected operation.

Dual Serial Ports Communication: Equipped with RS-232 and RS-422 dual serial ports for programming, monitoring, and data acquisition.

Complete Protection Logic: Integrates over-speed protection, low oil pressure protection, temperature over-limit, etc. safety interlock functions.

Hot Swap Design: Supports online maintenance, reducing system downtime.

Industrial Grade Reliability: Wide temperature, shock-resistant design, meeting 24/7 continuous production environments in power plants, petrochemicals, etc.

III. Technical Specifications

1. Core Performance

Control Type: Digital Speed / Load Controller

Processor: 32-bit industrial-grade dedicated processor

Control Cycle: < 10ms

Speed Accuracy: ±1rpm

Memory: Built-in Flash, stores control programs and parameters

2. Input Output

Speed Input: 2 channels, supports MPU, eddy current sensors (0-15kHz)

Analog Input: 4-20mA / 1-5V DC (remote setting)

Control Output:

PWM Output: Low current, drives electro-hydraulic converter

Analog Output: 0-10V DC

Digital I/O: 8 DI, 8 DO (for status / alarm)

Communication Interface: RS-232, RS-422

3. Physical and Environment

Size (W×H×D): 229 mm × 178 mm × 45 mm

Weight: Approximately 1.0 kg

Power Supply: 24 VDC ±10%

Operating Temperature: -40°C ~ +70°C

Protection: IP20

4. Product Status

Product Status: Discontinued (Discontinued)

Alternative Model: 5463-410 (New-generation Digital Speed Input Module, in service)

Same Series Positioning:

5441-635: Processor Module (Discontinued)

5441-645: Specialized Speed Governor (Discontinued)

5441-637/629: Relay Output Module (Discontinued)

IV. Typical Application Scenarios

Steam Turbine Control: Core of 505/505E Control System, performs speed control, load control, over-speed protection, automatic synchronization. Gas turbine control: 723+ controller package, used for start-up control, speed regulation, anti-surge protection, and sequence control.

Engine control: Speed regulation, load distribution, idle control for diesel/gas engines.

Power generation applications: Grid connection of generators, island operation, frequency/voltage regulation.

Compressor/pump control: Speed regulation and safety protection for centrifugal compressors, reciprocating compressors, and large pump sets.

V. System Configuration and Compatibility

1. Essential Complementary Components

Main controller: 5441-635, 5435 series

Power module: 5439-766 (24VDC)

I/O module: 5437 series (AI/AO), 5441 series (relays)

Actuators: Electro-hydraulic servo valves, linear displacement sensors (LVDT)

Software: ControlCore or 505 Toolkit

2. Compatible Systems

Fully compatible: NetCon 5000, MicroNet

Specifically compatible: WOODWARD 505/505E, 723/723+ control systems