Product Description: Woodward 5461-290 Digital Speed Controller / Synchronizer

Product Model: 5461-290

Brand: Woodward

Product Type: Industrial-grade microprocessor speed controller, automatic synchronizer, main control module 

I. Product Overview

The Woodward 5461-290 is a high-performance digital control module of the 5461 series, specifically designed for diesel engines, gas engines, steam turbines, gas turbines, and three-phase AC generator sets. Its core functions include closed-loop speed control, automatic synchronous grid connection, load distribution, and system power management. As the core component of the 505 control system, it is widely used in key industrial fields such as power generation, oil and gas, ships, and petrochemicals, achieving high-precision and high-reliability automated control.

Core Positioning: Engine / Turbine Speed Regulation + Generator Set Automatic Synchronization + Load Control + Main Power Module

Design Standards: Industrial-grade wide temperature range, vibration resistance, EMC protection, Class I, Division 2 hazardous area certification

Compatible Systems: Woodward 505/505E/505H, 723, NetCon, MicroNet - Full Series Control Systems

II. Core Technical Parameters

1. Electrical Specifications

Power Supply Voltage: 24 VDC ±10%

Power Consumption: Typical 9 W, Maximum 13 W

Digital Input (DI): 12 isolated discrete inputs (24 VDC)

Analog Input (AI): 4 4–20 mA / 1–5 VDC selectable (accuracy ±0.05%)

Digital Output (DO): 6 isolated relays / transistors outputs

Analog Output (AO): 2 4–20 mA isolated outputs (load 0–750 Ω)

PWM Output: Low current PWM drive signal (actuator / electro-hydraulic converter)

Communication Interfaces:

RS-232 (programming / monitoring)

RS-422 (remote IO / upper computer)

Optional Modbus RTU Protocol

Control Cycle: 1 ms (high-speed closed-loop)

2. Mechanical and Environment

Size: 145 × 85 × 38 mm

Weight: Approximately 0.85 kg

Installation Method: DIN rail / panel installation

Operating Temperature: -40°C ～ +85°C

Storage Temperature: -55°C ～ +90°C

Protection Grade: IP54 (panel)

Vibration / Shock Resistance: MIL-STD-810G Military Standard

EMC Protection: IEC 61000-6-2/4 Industrial Anti-interference

3. Control Performance

Control Accuracy: Speed ±1 RPM; Load ±0.1%; Synchronous Phase Difference < 0.5°

Regulation Modes: No-difference Speed Regulation (constant speed), Differential Speed Regulation (differential speed)

Synchronization Function: Automatic Frequency, Phase, Voltage Triple Matching

Load Distribution: Parallel Generator Set Load Distribution Accuracy < 1%

Protection Functions: Over-speed, Under-speed, Overcurrent, Overload, Misstep, Short Circuit, Phase Reverse Protection

III. Main Functional Characteristics

Dual Mode Operation

Programming Mode: Parameter Configuration, Protection Threshold, Communication Address, Control Curve Setting

Operating Mode: Real-time Speed Regulation, Synchronous Grid Connection, Load Distribution, Fault Diagnosis

Fully Automatic Synchronization (Core)

Real-time Detection of Grid Frequency, Voltage, Phase

Automatic Adjustment of Generator Speed and Excitation to Achieve Synchronous Grid Connection

Supports Automatic / Manual Synchronization Modes

Speed and Load Control

Single / Multiple Generator Sets at Constant Speed / Differential Speed Operation

Base Load, Island Operation, Grid-Connected with Base / Differential Mode

4–20 mA External Setpoint Signal Control

Soft Load Transfer, Load Rejection / Pulse Function

Power Management and Drive

As the main power module of the system, it supplies power to the control system and peripheral I/O

Drives Electro-hydraulic Actuators, I/H Converters, 20/25 Series Speed Regulators

Protection and Diagnosis Multiple fault protection (over-speed, under-speed, over-current, overload, out-of-sync)

100 historical fault records + event log

LED status indicator + remote monitoring

Compatibility

Compatible with Woodward electro-hydraulic actuators, 20/25 series speed regulators

Compatible with AVR, DCS, PLC and third-party control systems

IV. Typical Application Scenarios

Industrial power generation: Stand-alone power plants, cogeneration units for speed control and synchronization

Oil and gas: Speed control and regulation of gas turbines / compressor stations, long-distance pipeline drive

Ships: Main propulsion steam turbines / generator sets control

Petrochemicals: Steam turbine drive for pumps, fans, compressors

Power plants: Turbine DEH auxiliary control, small steam turbines speed control

V. Product Advantages

High integration: Integrates speed control, synchronization, load control, and power supply management

High precision: ±0.05% measurement/control accuracy

High reliability: Wide temperature range, anti-vibration, fanless design, MTBF > 500,000 hours

Strong adaptability: Hazardous area certification, maritime certification, industrial EMC standards

Easy maintenance: Local programming, remote diagnosis, parameter backup/recovery

VI. Model Description

5461: Serial number (precision control module)

290: Hardware version/configuration code (24 VDC main power supply, 12DI/6DO, dual serial ports, dedicated synchronization, enhanced PWM)

VII. Ancillary Accessories

Programming cable: RS-232 straight connection

Installation bracket: DIN rail clip

Terminal block: 24-pin industrial-grade connector

Software: Woodward ToolKit configuration software