GAC ESD5550E Electronic Speed Governor Controller

GAC ESD5550E Electronic Speed Governor Controller

The GAC ESD5550E Speed Governor Controller is a high-performance electronic engine speed control module designed for precise and stable diesel engine speed regulation. It provides isochronous operation with excellent steady-state stability, making it ideal for generator sets and industrial engine applications.

This controller supports both 12V and 24V DC battery systems and is compatible with a wide range of actuators and magnetic speed sensors. With advanced droop control, speed trimming, and environmental durability, the ESD5550E is trusted for demanding operating conditions.
Key Features :
Isochronous operation with ±0.25% or better steady-state stability
Wide speed range: 1 kHz – 7.5 kHz continuous
Droop control range: 1–5% regulation
Adjustable idle speed and speed trim
Remote variable speed control support
Built-in speed switch relay (N.O. & N.C.)
Compatible with magnetic pickup speed sensors
Supports 12V / 24V DC battery systems
Transient and reverse voltage protected
Designed for harsh industrial environments

Performance :
Steady State Stability: ±0.25% or better
Speed Drift with Temperature: ±1% maximum
Speed Trim Range: ±200 Hz
Remote Variable Speed Range: 500–7.5 kHz
Speed Switch Adjustment Range: 1000–10000 Hz

Key Specifications :
Supply Voltage: 12V / 24V DC
Polarity : Negative Ground (Case Isolated)
Power Consumption: 50 mA + actuator current
Actuator Output: 2.5A – 10A (Continuous)
Speed Sensor Signal: 0.5 – 120V RMS
Operating Temperature: -40°C to +85°C
Humidity: Up to 95%
Finish: Fungus-proof, corrosion-resistant
Weight: 0.82 kg
Mounting: Any position (Vertical preferred)

Applications : Diesel generators, industrial & marine engines, pumps, compressors, power control panels