Product Description: Woodward 5462-017 Digital Speed Controller

Product Model: 5462-017

Brand: Woodward

Product Series: 505 Series Industrial Turbine-Specific Digital Controller

I. Product Overview

The Woodward 5462-017 is a high-performance microprocessor speed control controller specifically designed for single/double actuator industrial steam turbines. It belongs to the 505 series of dedicated models, focusing on turbine speed control, electro-hydraulic signal conversion, and multi-level safety protection. It is the core control unit for industrial cogeneration, steam turbine-driven compressors/pump sets.

Core Functions: Closed-loop speed control, electro-hydraulic drive (I/H), overspeed protection, start/stop logic

Target Applications: Industrial steam turbines (condensing, back-pressure, extraction)

Product Form: Standard modular controller, 19-inch rack / DIN rail installation

II. Core Technical Parameters

1. Electrical Specifications

Power Supply: 24 VDC (18–32 VDC)

Speed Signal Input:

Dual redundant MPU electromagnetic sensors (differential input)

Frequency Range: 0–15 kHz

Analog Setpoint: 4–20 mA / 1–5 VDC (remote speed setpoint)

Control Output:

Low current PWM output (directly drives electro-hydraulic converter I/H)

Multi-channel Relay Output (alarms, shutdown, status indication)

Analog Feedback: 4–20 mA

Communication Interface: Dual serial ports RS-232 + RS-422 (supports Modbus)

Safety Level: Hardware-level overspeed protection, compliant with SIL safety standards

2. Mechanical and Environmental

Operating Temperature: -40°C ～ +70°C

Protection Grade: IP20 (cabinet installation)

Installation Method: 19-inch standard rack / 35mm DIN rail

Anti-vibration / Shock Resistance: MIL-STD-810 military standard

Weight: Approximately 0.6 kg

3. Control Performance

Control Modes:

Speed Control

Extraction Control

Isochronous / Droop

Speed Control Accuracy: ≤ ±0.01%

Protection Response: Overspeed Protection Action Time < 10 ms

Protection Functions:

Two-stage Overspeed Protection (103% / 110% rated speed)

Sensor Failure, Actuator Failure, Power Failure Diagnosis

Overvoltage, Undervoltage, Reverse Connection, Short Circuit Full Electrical Protection

III. Main Functional Characteristics

Steam Turbine-specific Control Algorithm

Deeply optimized for steam turbine dynamic characteristics, suitable for various models such as condensing, back-pressure, and extraction.

Supports extraction pressure composite control to achieve stable decoupling regulation of speed and extraction pressure.

Complete start/cooling/hot start/half-load full process logic, simplifying operation.

Electro-hydraulic Drive and Signal Processing

Directly outputs PWM signal to drive electro-hydraulic converter (I/H), controlling main steam valve / regulating valve opening.

Dual MPU redundant speed measurement, critical signals highly reliable, preventing single-point failure.

Fully isolated analog/digital interfaces, strong resistance to industrial electromagnetic interference.

Industrial-grade reliable design

Wide temperature range, high vibration resistance, fully isolated hardware design, suitable for harsh environments such as power plants, chemical plants, etc.

Hardware Independent Overspeed Protection, not dependent on software, higher safety level.

Supports fault self-diagnosis, data recording, black box function, facilitating maintenance and traceability.

Flexible Communication and Integration Dual independent serial ports (RS-232/422), supporting Modbus RTU, easily integrated into DCS/PLC systems.

Local keypad panel + remote Toolkit software, dual-mode local/remote debugging configuration.

IV. Typical Application Scenarios

Industrial cogeneration units: steam turbine speed regulation, extraction steam control, safety protection

Turbine-driven compressors: petrochemicals, natural gas long-distance pipeline compressor control

Turbine-driven pumps: power plant boiler feed pumps, industrial circulating pumps speed control

Waste heat power generation turbines: cement, steel, waste incineration waste heat power generation control

Industrial boilers / steam turbine retrofit: upgrading of old steam turbine electro-hydraulic control systems

V. Product Advantages

Specialized and focused: pure steam turbine-specific control logic, more suitable for steam turbine conditions than general types.

Safety first: hardware-level overspeed protection + full signal isolation, meeting the highest industrial safety standards.

Stable and precise: microsecond control cycle, speed regulation accuracy up to ±0.01%, minimal load fluctuation.

Easy integration: dual serial ports + standard analog signals, seamless connection to various industrial control systems.

Easy maintenance: fault diagnosis + data recording, high maintenance efficiency, short downtime.

VI. Model Code Interpretation

5462: Woodward 500 series controller (steam turbine-specific) basic series number

017: hardware configuration code (505 type, steam turbine-specific, dual actuator drive, dual serial ports, 24VDC, wide temperature range, high safety level)

VII. Standard Accessories

Speed sensor: dual-channel MPU electromagnetic speed probe

Connection cable: shielded signal cable, communication cable

Software tool: Woodward ToolKit configuration and debugging software

Installation accessories: guide rail / rack installation bracket, fixing screws