1、With overspeed protection, speed controller 's high quality can keep its high performance for a long time. 2、Adjustment of the "starting fuel" and "speed adjustment rate" of the engine can reduce the smoke emission and get to the working speed of the engine. 3、Full electronic equipment design can make fast and accurate response to control engine speed. 4、Supports adjustable speed and working idle speed, speed controller is improved for more durability. 5、Based on the ESD5500E, a new overspeed protection function of speed controller is added, which greatly improves the safety and reliability of the engine. It is the most versatile and complete model at present and is widely used in new generators. Item Type: Speed regulator Technical Specifications: Speed Stability: Better than ± 0.25% Speed Range: 1KHz ~ 7.5KHz Thermal Stability: Maximum ± 1% IDLE Adjustment: 160 ± 20Hz ~ 95% of rated speed DROOP Adjustment: Minimum Position: 15Hz ± 6Hz / load current change per ampere Maximum Position: 400Hz ± 75Hz / load current change per ampere External Speed Adjustment: ± 200Hz (external 1KΩ) AUX Input Sensitivity: 148Hz / 1V., ± 10Hz., Impedance: 1MΩ START FUEL Adjustment: 160 ± 20Hz ~ 70% of rated speed RAMP Time Adjustment: 1.5 ~ 20 Sec. Overspeed Protection Adjustment Range: 1500Hz ~ 7.5kHz Overspeed Protection Action Delay: 1.5 Sec. 10V Output Current: Maximum 20mA Surroundings: Operating Temperature Range: -40 ℃ ~ 85 ℃ Operating Humidity Range: Maximum 95% Storage Temperature: -55 ℃ ~ 90 ℃ Vibration: 20-100HZ 500mm / Sec. Input Power: Grounding Polarity: Negative Power Consumption: 50mA Actuator Continuous Current: Minimum: 2.5A; Maximum:10A Speed Sensor Signal: 0.5 ~ 120 RMS Note: The above performance parameters are measured at the working frequency of 4000Hz. 1 x Speed Controller 1 x User Manual