Woodward 5462-750 Electric Governor Drive

Description

Woodward 5462-750 Electric Governor Drive

Product Dimensions：

The Woodward Electric Governor Drive (often referring to the EGCP, ProAct, or EGB series) represents a sophisticated line of all-electric actuators and controls designed to manage the speed and load of prime movers, such as gas engines, diesel engines, and steam turbines.

Below is a detailed technical breakdown of these systems.

1. Product Detailed Description

The Woodward Electric Governor Drive is an electromechanical system that replaces traditional hydraulic governors. It typically consists of an electronic control unit (ECU) and an electric actuator.

The system operates by sensing the engine speed (via a magnetic pickup) and comparing it to a desired setpoint. The control unit then sends an electrical signal to the actuator, which physically moves the fuel rack or throttle valve to maintain the precise speed or power output required.

2. Technical Parameters

While specific parameters vary by model (e.g., ProAct, 723PLUS, or EG-10P), common specifications include:

• Input Voltage: Typically 24V DC (range of 18–32V DC).

• Output Torque/Work: Ranges from 1.4 Nm (1.0 lb-ft) for small engines to 40 Nm (30 lb-ft) or more for large-scale industrial engines.

• Operating Temperature: -40°C to +95°C (-40°F to +203°F).

• Speed Sensing: Magnetic Pickup (MPU) input, typically 1 to 12,000 Hz.

• Communication Protocols: Modbus RTU, CANOpen, or SAE J1939 (depending on the digital model).

• Steady State Speed Control: $pm 0.25%$ of rated speed.

3. Product Advantages

• High Precision: Offers near-instantaneous response to load changes, significantly reducing frequency overshoot or undershoot.

• Maintenance-Free: Unlike hydraulic governors, electric drives have no oil to change, no filters to replace, and no seals that leak over time.

• All-Electric Design: Eliminates the need for a mechanical drive or hydraulic plumbing, simplifying the engine room layout.

• Programmable Flexibility: Digital models allow for custom PID (Proportional-Integral-Derivative) tuning to match the specific inertia of the engine.

• Environmentally Friendly: No risk of oil contamination or hydraulic fluid spills.

4. Safety and Precautions (Important)

• Overspeed Protection: The governor is a speed-control device, not an emergency shutdown device. A separate, independent overspeed protection system (like a fuel shut-off valve) must be installed.

• Wiring Integrity: Ensure shielded cables are used for the Magnetic Pickup (MPU) to prevent electromagnetic interference (EMI) from causing erratic speed signals.

• Voltage Stability: The drive requires a stable DC power source. Large voltage drops during engine cranking can cause the governor to reset.

• Mounting: Ensure the actuator is mounted in a location that stays within the rated temperature range and is protected from excessive vibration.

5. Product Applications

Woodward Electric Governor Drives are used globally across various power-generation and industrial sectors:

1. Power Generation: Precise frequency control for diesel and gas generator sets (Gensets) operating in standby or prime power modes.

2. Marine Propulsion: Controlling the speed of main engines and auxiliary shipboard generators.

3. Gas Compressors: Managing engine speed in pipeline stations where load fluctuates frequently.

4. Industrial Turbines: Providing electronic fuel control for small mechanical-drive steam turbines.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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