Product Description: Woodward 5461-774 Digital Microprocessor Controller

Product Model: 5461-774

Brand: Woodward

Product Type: 505 Series Digital Speed Controller

I. Product Overview

The Woodward 5461-774 is a high-performance digital speed control and synchronization controller based on a microprocessor, designed specifically for three-phase AC generators. It integrates three core functions: speed control, load distribution, and automatic synchronization. It is an ideal control unit for engine/gas turbine-driven generator sets to achieve single-machine constant speed, multi-machine parallel operation, and grid connection.

Core Positioning: Generator set speed control, load distribution, automatic synchronization, voltage regulation control

Specialized Fields: Diesel/gas generator sets, grid-connected power stations, backup power systems

Product Form: Modular card, standard cabinet installation

II. Core Technical Parameters

1. Electrical Specifications

Power Supply: 24 VDC (18–32 VDC)

Control Outputs:

Low current PWM output (for actuator, electro-hydraulic converter)

Multiple relay outputs (for alarm, shutdown, status indication)

Analog Output (4–20 mA / 0–10 VDC, for voltage regulation)

Output Accuracy: ≤ ±0.25% F.S.

Signal Inputs:

Speed Feedback: MPU electromagnetic sensor

Analog Inputs: 4–20 mA / 1–5 VDC (remote speed / load / voltage setting)

Switching Inputs: Start, shutdown, reset, operation allowed, synchronization allowed

Voltage Feedback: Three-phase AC voltage sampling

Communication Interfaces: Independent RS-232 & RS-422 Serial Ports

Electrical Isolation: Input / Output / Power Three-terminal Full Isolation

Safety Certification: Class I, Div 2 Explosion-proof Certification

2. Mechanical and Environmental

Operating Temperature: -40°C ～ +85°C

Protection Grade: IP65

Installation Method: Standard 19-inch Rack / Rail Installation

Anti-Vibration / Shock: Complies with MIL-STD-810F Military-level Anti-Vibration

Weight: Approximately 1.0 kg

3. Control Performance

Control Modes:

Isochronous Mode (No Speed Difference): Single-machine constant speed

Droop Mode (With Speed Difference): Parallel machine load distribution

Automatic Synchronization (Auto Sync): Frequency, phase, voltage automatic matching

Voltage Regulation (AVR): Automatic Voltage Regulation and Reactive Power Control

Speed Regulation Accuracy: ≤ ±0.01%

Synchronization Accuracy: Frequency Difference ≤ ±0.01 Hz, Phase Difference ≤ ±0.5°

Regulation Algorithm: Adaptive PID + Feedforward Control + Dynamic Limiter

Protection Functions:

Over-speed / Under-speed, Overload, Reverse Power Protection

Overvoltage / Undervoltage, Over-frequency / Under-frequency Protection

Sensor Fault, Actuator Fault, Communication Fault Diagnosis

Power Overvoltage, Undervoltage, Reverse Connection Protection

III. Main Functional Characteristics

Full Function Control of Generator Sets

Integrates speed control, load distribution, automatic synchronization, and voltage regulation, with a single module achieving complete control of the generator set.

Supports dual modes of isochronous / droop, perfectly adapting to single-machine / parallel machine / grid-connected full operation conditions.

Precise Active/Reactive Power Control to ensure equal distribution of load and power factor among multiple generator sets.

High Precision Automatic Synchronization

Built-in fully automatic synchronization algorithm, quickly and accurately capturing the grid connection window, achieving seamless grid connection without impact.

Synchronization Accuracy: 0.01 Hz frequency difference, 0.5° phase difference, effectively protecting the generator and the grid. Supports three synchronization modes: manual, semi-automatic, and automatic, catering to different operational requirements.

Highly reliable industrial design

-40℃ to +85℃ wide temperature range, IP65 high protection level, fully isolated anti-interference design.

Hardware-level **fail-safe** design, automatically stops when a fault occurs.

Key parameters are preserved during power loss, and resume operation without disturbance upon power-on.

Flexible system integration

Standard RS-232/RS-422 interfaces, supporting Modbus communication protocol.

Compatible with Woodward's full range of actuators and automatic voltage regulators (AVR).

Supports remote programming, monitoring, fault diagnosis, and data recording.

Four. Typical application scenarios

Diesel / gas generator sets: backup power supply, regular power stations, parallel and grid-connected systems

Ship power stations: main and auxiliary generator control, paralleling, load distribution

Oilfield / mining power stations: mobile power stations, independent power grids, multi-machine parallel operation

Combined heat and power: engine group + waste heat recovery, grid-connected power generation

Data centers / hospitals: uninterruptible backup power supply, rapid grid connection

Five. Product advantages

Function integration: speed regulation + load + synchronization + pressure regulation integrated, simplifying system architecture

Excellent accuracy: 0.01% speed regulation accuracy, 0.01Hz synchronization accuracy, precise and stable control

High reliability: wide temperature range, high protection level, fully isolated, long-life industrial-grade design

High compatibility: fully compatible with diesel / gas / dual-fuel engines

Easy maintenance: remote programming, fault diagnosis, parameter backup convenient and efficient

Six. Model code interpretation

5461: Woodward industrial control module serial number

774: Hardware configuration code (505 generator set controller, automatic synchronization function, RS-232/422 communication, 24VDC, wide temperature range, IP65, explosion-proof, generator-specific)

Seven. Standard accessories

Speed sensor: MPU magnetic-electric speed probe

Actuator: Woodward electro-hydraulic converter, servo valve, linear actuator

Voltage regulation module: Woodward AVR automatic voltage regulator

Connection cable: shielded signal cable, communication cable

Software tools: Woodward ToolKit configuration and debugging software