Overview

Technical Parameters

Basic Information

• Model Series: DEGO-II / DEGO S Series
• Specific Models: QHFD 111 / QHFD 122
• Manufacturer: ABB (ASEA)
• Application Type: Marine Main Engine Electronic Governor

Reference Parameters (Based on DEGO Series General Specifications)

• I/O Interface: Digital input/output, analog signal processing
• Speed Sensor: Supports multi-channel speed signal input
• Control Signal: Analog or increment/decrement signal setting
• Operating Power Supply: Marine DC power supply (usually 110V DC)

Product Features

Main Characteristics

• Full Electronic Control: Replaces traditional mechanical governors with an electronic control unit
• Redundant Design: Adopts dual speed sensor input to improve safety
• PID Regulation: Built-in PID controller for speed and load optimization
• OverSpeed Protection: Equipped with overspeed monitoring and suppression functions
• LCD Display: Shows speed, fuel, control mode and alarm information
• Multi-brand Actuator Compatibility: Can control various brands and types of actuators
• Fault Diagnosis: Built-in diagnostic function for easy maintenance and troubleshooting

Structure and Composition

System Architecture

• Control Unit: Core electronic control board, including processor and I/O interface
• Actuator Drive: Built-in actuator driver (can output 0-20mA, ±10V or PWM signals)
• Sensor Interface: Speed sensor signal input (usually magnetic pickup)
• Operation Panel: Local display and manual control unit
• I/O Module: Analog and digital signal input/output
• Communication Interface: RS-485, CAN (later models), etc.

Hardware Composition

• QHFD 111: DEGO-II main engine governor main module
• Supporting Actuators: Hydraulic or electric actuators (torque range 70-400Nm)
• Speed Sensor: Magnetoelectric speed sensor

Application Fields

Main Applications

• Marine Main Engine Propulsion: Single or multi-main engine propulsion systems
• Electric Propulsion: Multi-engine parallel drive systems
• Generator Sets: Marine and onshore diesel generator sets
• Retrofit Applications: Can replace old mechanical governors, DEGO S series, Wärtsilä, Woodward and other brand products