Product Description: Woodward 5461-772 Digital Speed Controller

Product Model: 5461-772

Brand: Woodward

Product Type: 505 Series Digital Speed Controller

I. Product Overview

The Woodward 5461-772 is a high-performance digital speed control and load controller based on a microprocessor. It belongs to the classic 505 controller series. It is specifically designed for diesel/gasoline engines and steam turbines, providing precise speed regulation, load distribution, and system protection. It is widely used in generator sets, pump sets, and compressor drive systems.

Core Focus: Speed Control, Load Control, Parallel Operation, Engine Protection

Compatible Series: Woodward 505, 2301D, 723 Control System

Product Form: Modular Card, Standard Cabinet Installation 

II. Core Technical Parameters

1. Electrical Specifications

Power Supply: 24 VDC (18–32 VDC)

Control Output:

Low current PWM output (for driving actuators, electro-hydraulic converters)

Relay Output (for alarms, shutdown, status indication)

Output Accuracy: ≤ ±0.25% F.S.

Signal Input:

Speed Feedback: MPU electromagnetic sensor

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

Digital: Start, Stop, Reset, Run Allowance

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

Electrical Isolation: Input / Output / Power Three-Port 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

Vibration / Shock Resistance: Complies with MIL-STD-810F

Weight: Approximately 1.0 kg

3. Control Performance

Control Modes:

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

Droop Mode (With Speed Difference): Parallel / Grid load distribution

Load Control: Constant Power, Base Load Control

Speed Limit: Maximum / Minimum Speed Protection

Speed Regulation Accuracy: ≤ ±0.01%

Control Algorithm: PID Closed-loop Regulation + Feedforward Control

Protection Functions:

Over-speed / Under-speed Protection

Overload, Reverse Power Protection

Sensor Fault, Actuator Fault Diagnosis

Power Overvoltage, Undervoltage, Reverse Connection Protection

III. Main Functional Characteristics

High Precision Speed Control

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

32-bit Processor, Millisecond-level Dynamic Response, Speed Regulation Accuracy up to 0.01%.

Adaptive PID Algorithm, still maintaining speed stability during load fluctuations.

Multifunctional Load Management

Precise Active Power Control, Supports Multi-unit Parallel Operation and Load Distribution.

Built-in Soft Start / Soft Stop Logic, Reduces Mechanical Shock.

Provides Idle Control, Fuel Limiting, Over-speed Protection, etc. for Engine-specific Functions.

Highly Reliable Industrial Design

-40°C ～ +85°C Ultra-wide Temperature Range, IP65 High Protection, Full Isolation Anti-interference Design.

Hardware-level Fault Protection, Real-time Self-Diagnosis and Alarm Output.

Key Parameters Power Loss Protection, Power-on No-Disruption Recovery Operation.

Flexible System Integration

Standard RS-232/RS-422 Interface, Supports Modbus Communication.

Compatible with Woodward's Full Series Actuators and Voltage Regulators.

Supports Remote Programming, Monitoring, Fault Diagnosis and Parameter Backup.

IV. Typical Application Scenarios

Diesel / Gasoline Generator Sets: Standby Power, Common Power Station, Parallel Grid System

Engine Drive Pump Set: Fire Pump, Oil Pump, Chemical Process Pump

Compressor Drive: Natural Gas Compression, Air Compression, Refrigeration Compression

Ship Power: Main and Auxiliary Machine Speed Regulation, Power Station Parallel Control

Mobile Power: Oilfield, Mining, Construction Machinery Power Control

V. Product Advantages

High Precision: 0.01% Speed Regulation Accuracy, Precise and Stable Speed / Load Control

High Reliability: Ultra-wide Temperature Range, High Protection, Full Isolation, Long-life Industrial-grade Design

Strong Compatibility: Full Compatibility with Diesel / Gasoline / Steam Turbine

Multifunctional: Speed Regulation + Load + Protection Integration, Single Module Achieves Complex Control

Easy Maintenance: Remote Programming, Fault Diagnosis, Parameter Backup Convenient and Efficient

V. Model Number Interpretation

5461: Woodward Industrial Control Module Serial Number 772: Hardware Configuration Code (505 Digital Speed Controller, Dual Serial Ports RS-232/422, 24VDC, Wide Temperature Range, IP65, Explosion-proof, Engine-specific)

VII. Standard Accessories

Speed Sensor: MPU Electromagnetic Speed Probe

Actuator: Woodward Electro-hydraulic Converter, Servo Valve, Linear Actuator

Connection Cables: Shielded Signal Cable, Communication Cable

Software Tools: Woodward ToolKit Configuration and Debugging Software