Product Description: Woodward 5461-661 Digital Speed / Synchronization Controller

Product Model: 5461-661

Brand: Woodward

Product Type: 505 Series Digital Speed Controller & Automatic Synchronizer (Digital Speed Controller & Synchronizer)

I. Product Overview

The Woodward 5461-661 is a high-performance microprocessor controller that integrates speed control and automatic synchronization functions. It belongs to the 505 control system family. It is designed for diesel/gasoline engines, steam turbines, and generator sets. The core is used for single-machine speed regulation, parallel unit load distribution, and generator automatic grid connection synchronization, serving as the core module for achieving precise control of prime movers and safe parallel connection to the power grid.

Core Function: Engine / Turbine Speed Control, Generator Automatic Synchronization, Load Distribution

Application Object: Diesel engines, gas engines, steam turbines, generator sets

Product Form: Modular controller, standard rack installation

II. Core Technical Parameters

1. Electrical Specifications

Power Supply: 24 VDC (18–32 VDC)

Control Output:

Low current PWM signal (direct drive to actuator)

Output Accuracy: ≤ ±0.25% F.S.

Response Time: < 1 ms

Signal Input:

Speed Feedback: MPU electromagnetic sensor signal

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

Switching: Start, Stop, Reset, Synchronization Allow

Communication Interface:

Independent RS-232 & RS-422 Dual Serial Ports

Optional: Modbus RTU, Ethernet

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

Safety Certification: SIL2, Class I, Div 2 Explosion-proof

2. Mechanical and Environmental

Operating Temperature: -40°C ～ +85°C (Industrial-grade wide temperature)

Protection Grade: IP65

Installation Method: Standard 19-inch chassis / Rail Installation

Anti-Vibration / Impact: Complies with MIL-STD-810F

Weight: Approximately 0.9 kg

3. Control Performance

Control Modes:

No-Difference Speed Regulation (ISO): Single-machine constant speed control

Difference-Speed Regulation (Droop): Parallel / Grid-connected load distribution

Automatic Synchronization (Auto Sync): Frequency, Phase, Voltage automatic matching

Speed Accuracy: ≤ ±0.01%

Synchronization Accuracy: Frequency Difference ≤ ±0.01 Hz, Phase Difference ≤ ±1°

Adjustment Algorithm: Adaptive PID Closed-loop Regulation

III. Main Functional Characteristics

** Dual-Function Integrated Control (Core)**

Speed Control: Suitable for diesel engines, gas engines, steam turbines, supports single / parallel operation.

Automatic Synchronization: Three-phase generator automatic grid connection, precise matching of frequency, phase, and voltage.

Load Distribution: Automatic, smooth distribution of active load between parallel units.

High Precision Synchronization and Speed Regulation

32-bit processor, millisecond-level response, ensuring successful synchronization once.

One-click switching between no-difference / difference modes to achieve seamless operation mode conversion.

Direct drive to actuator, no need for external amplifier.

Highly reliable industrial design

**-40°C ~ +85°C** wide temperature, IP65 protection, full isolation anti-interference.

Hardware-level overcurrent, short circuit, reverse connection protection, fault self-diagnosis and alarm.

Parameter power-off retention, power-on seamless recovery.

Flexible communication and integration

Dual serial ports + optional network, supports Modbus, seamless integration into DCS/PLC. Support remote programming, monitoring, diagnosis and debugging.

Compatible with all models of Woodward actuators and sensors.

IV. Typical Application Scenarios

Diesel / gas generator sets: single unit constant speed, multiple units parallel operation, automatic grid connection

Industrial steam turbines: speed / load control for pumps, compressors, fans

Combined heat and power (CHP): synchronization and load management of engine-generator sets

Ships / offshore platforms: main propulsion, control and parallel operation of power station generator sets

Standby power supply: automatic startup, synchronization and load distribution of emergency generator sets

V. Product Advantages

Two-in-one integration: speed controller + automatic synchronizer, single module achieves dual functions

High-precision synchronization: high success rate of one-time grid connection, reduces impact and protects equipment

Full operating condition stability: differential / non-differential mode covers single unit / parallel operation in all scenarios

High reliability: wide temperature range, high protection, full isolation, long life design

Easy integration: standard interfaces, plug-and-play, convenient remote maintenance

VI. Model Code Interpretation

5461: Woodward industrial control module serial number

661: Hardware configuration code (speed + synchronizer controller, engine / turbine universal, dual actuators, PWM output, dual serial ports, SIL2, 24VDC, wide temperature range, IP65, explosion-proof)

VII. Standard Accessories

Speed sensor: MPU electromagnetic speed probe

Actuator: Woodward electro-hydraulic converter, servo motor, actuator

Connection cable: shielded signal cable, communication cable

Software tools: Woodward ToolKit configuration and debugging software