Product Description: Woodward 5462-482 Digital Speed Controller

Product Model: 5462-482

Brand: Woodward

Product Series: 500 Series

Product Type: Digital Microprocessor Speed Controller / Generator Set Speed Control Board

I. Product Overview

The Woodward 5462-482 is an independent digital speed controller based on a microprocessor, designed specifically for controlling the speed of industrial engines, gas turbines, and steam turbines. As the core of the control system, it receives speed signals and external set values, calculates and outputs control signals through advanced algorithms, precisely regulating fuel / steam supply to maintain the engine or generator set running at the set speed.

Core Functions: Speed Closed-loop Control, Load Regulation, Overspeed Protection, Condition Monitoring

Applicable Objects: Diesel Engines, Gas Engines, Steam Turbines, Gas Turbines, Generator Sets

Product Form: Modular standard chassis, rail / panel mounting 

II. Core Technical Parameters

1. Electrical Specifications

Power Supply: 24 VDC (18–32 VDC)

Speed Input: MPU electromagnetic speed sensor signal (0.1Vrms–90Vrms)

Control Input: 4–20 mA / 1–5 VDC external speed / load setting signal

Drive Output: PWM actuator drive signal (maximum 2A)

Switching Quantity: 8 programmable DI, 4 programmable DO (relay / solid state)

Communication Interface: RS485 (Modbus RTU)

Protection Features: Overcurrent, short circuit, reverse connection, overtemperature, surge protection

2. Mechanical and Environmental

Operating Temperature: -40°C ～ +85°C

Protection Grade: IP20

Installation Method: 35mm DIN rail or panel installation

Weight: Approximately 1.2 kg

Size: Approximately 144mm × 100mm × 65mm

3. Control Performance

Control Accuracy: ≤ ±1 rpm or ±0.05% (take the larger value)

Adjustment Mode: No-difference adjustment (constant speed), differential adjustment (variable speed)

Response Time: ≤ 10 ms

Speed Regulation Range: 100–10,000 rpm (programmable)

Steady-State Fluctuation Rate: ≤ ±0.25%

PID Regulation: Adaptive PID parameter self-tuning

III. Main Functional Characteristics

High Precision Speed Control

Utilizing 32-bit floating-point DSP and high-precision speed sampling to achieve sub-speed-level precise control.

Supports two adjustment modes: no-difference / differential, suitable for single-machine operation or multi-machine parallel grid connection.

Built-in adaptive PID algorithm, dynamically optimizing response, eliminating fluctuations, and quickly stabilizing speed.

Comprehensive Protection and Safety Mechanisms

Multiple levels of over-speed protection (hardware + software), over-speed immediately executes emergency shutdown.

Real-time sensor fault diagnosis, open circuit, short circuit automatically detected and alarmed.

Output overcurrent / short circuit protection, automatically cuts off actuator power supply, protecting equipment.

Flexible Signals and Communication

Compatible with standard 4–20mA analog signal and MPU speed sensor.

RS485 Modbus interface, supports remote monitoring, parameter reading and writing, data acquisition.

Front panel LED and buttons, local parameter setting, calibration, status viewing.

Industrial-grade high reliability design

Wide temperature, high vibration resistance, fanless design, suitable for harsh environments such as power plants, mines, and offshore platforms.

Fully isolated I/O (2500Vrms), strong resistance to industrial electromagnetic interference (EMI/EMC).

Parameter power-off preservation, key settings permanently stored, no need for battery.

IV. Typical Application Scenarios

Diesel / Gasoline Generator Sets: Single-machine constant speed control, parallel load distribution

Industrial Engine Drives: Speed / load control of pumps, compressors, fans

Steam / Gas Turbines: 505/505E system backup or independent speed regulation control

Mobile Power Equipment: Ship, construction machinery engine speed regulation

Upgrade of Old Systems: Replace analog speed regulators, improve control accuracy and stability

V. Product Advantages

Control Precise: 0.05% control accuracy, ensuring stable and efficient power output.

Safe and Reliable: Dual redundant over-speed protection, industrial-grade MTBF > 300,000 hours.

Comprehensive Functionality: Speed regulation + protection + communication integration, single module achieves complete control.

Easy Debugging: Parameter self-tuning + panel operation, quickly complete installation and debugging.

Universal Compatibility: Standard signals + Modbus, seamless integration into various DCS/PLC systems.

VI. Model Code Interpretation

5462: Woodward 500 Series Control Module Base Number 482: Independent Digital Speed Control Controller (24VDC, MPU input, PWM drive, RS485 communication, wide temperature range)

VII. Standard Packaging List

5462-482 Speed Controller Main Unit 1 unit

Installation bracket and track clip

Product Certificate and Warranty Card

Terminal blocks and labels

User Manual (English / Chinese)

Programming and Debugging Software CD-ROM