WOODWARD 3522-1004 Product Specification
1. Product Overview
The WOODWARD 3522-1004 is a precision electronic governor specifically designed for small to medium-sized diesel, gasoline, and gas engines, as well as steam turbines. Engineered with Woodward’s decades of expertise in power control technology, this governor delivers accurate speed regulation and load management, ensuring stable operation of prime movers in critical applications such as emergency generators, marine auxiliary engines, industrial pumps, and small-scale power generation units.
Featuring a ruggedized design and adaptive control algorithms, the 3522-1004 excels in harsh operating environments—resisting vibration, temperature fluctuations, and electrical interference. It complies with industrial standards including SAE J1939 and IEC 60068, guaranteeing compatibility with mainstream engine systems and meeting the reliability requirements of on-site operations.
2. Technical Parameters & Specifications
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Category
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Details
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Product Model
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WOODWARD 3522-1004
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Product Type
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Electronic Speed Governor (Analog/Digital Control)
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Applicable Prime Movers
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Diesel Engines (20–200 kW); Gas Engines; Small Steam Turbines
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Speed Regulation Range
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50–3000 RPM (Adjustable); Speed Resolution: 0.1 RPM
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Speed Regulation Accuracy
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≤±0.2% (Steady State); ≤±1% (Transient State)
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Input Signals
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Speed Feedback (Magnetic Pickup/Encoder); 4–20 mA Remote Speed Setpoint; Start/Stop Signal
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Output Signals
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0–5 V DC (Actuator Drive); Relay Outputs (2 NO/1 NC); Fault Alarm Signal
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Power Supply
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12 V DC / 24 V DC ±20%; Power Consumption: ≤10 W
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Environmental Ratings
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Operating Temp: -40°C–70°C; Humidity: 0%–95% (Non-Condensing); Vibration: ≤5 g
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Certifications
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SAE J1939; IEC 60068; UL 1604; CE; ATEX Zone 2 (Optional)
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3. Key Features
3.1 High-Precision Speed Regulation
Integrated with Woodward’s adaptive PID control algorithm, the 3522-1004 maintains exceptional speed stability (≤±0.2% steady-state accuracy) even under load fluctuations. It quickly compensates for speed deviations caused by sudden load changes—critical for applications like emergency generators, where stable frequency supply is essential.
3.2 Multi-Signal Compatibility
The governor supports dual speed feedback modes (magnetic pickup for cost-effectiveness, encoder for high precision) and accepts 4–20 mA remote setpoint signals. This flexibility allows seamless integration with PLCs, SCADA systems, and HMI devices, enabling both local and remote control of prime movers.
3.3 Ruggedized for Harsh Environments
With a wide operating temperature range (-40°C–70°C) and IP65-rated housing, the 3522-1004 adapts to extreme conditions such as cold storage facilities, desert power stations, and marine engine rooms. Enhanced vibration resistance (≤5 g) ensures reliable operation in mobile equipment like construction machinery.
3.4 Comprehensive Protection & Diagnostics
Built-in protection functions include overspeed, underspeed, low power supply, and actuator fault detection, triggering immediate alarms or shutdowns to prevent equipment damage. The integrated diagnostic interface provides real-time status monitoring and fault code retrieval, simplifying maintenance.
4. Related WOODWARD Products
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WOODWARD 3522-1005: High-power variant for engines/turbines (200–500 kW), with enhanced load-sharing capability for parallel operation.
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WOODWARD 2301A: Entry-level mechanical-electronic governor, cost-effective for small single-engine applications like irrigation pumps.
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WOODWARD ECS-5000: Full-authority digital engine controller, paired with 3522-1004 for complex engine management in power generation.
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WOODWARD MPC-150: Magnetic pickup sensor, providing reliable speed feedback for 3522-1004 in harsh industrial environments.
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WOODWARD HMI-200: Touchscreen interface, enabling intuitive parameter setting and status monitoring for 3522-1004-equipped systems.
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