Variable Frequency Drive 3 Phase Inverter Frequency Converter for 37KW 45KW Motor Speed Control AC380V Item Type: Variable Frequency Drive Material: Aluminum Alloy, Flame Retardant PC Input Current: 76A 92A Output Current: 75A 90A Adaptive Motor Power: 37KW 45KW Surrounding Temperature: -10-40℃ (ambient temperature is between 40-50℃, please reduce the rating for use) Surrounding Humidity: 5%-95%RH, no condensation of water droplets Surrounding Environment: Indoor (without direct sunlight, corrosion, flammable gases, oil mist, dust, etc.) Altitude: Derated for use above 1000 meters, derated by 10% for every 1000 meter increase Protection Level: IP20 Cooling Method: Air cooling, with fan control Typical Functions: Multi Speed and Swing Operation: 16 programmable multi speed control with multiple operation modes available. Swing Frequency Operation: The preset frequency and center frequency can be adjusted, and the state memory and recovery after power failure can be achieved. PID Control RS485 Comm: Built in PID controller (with preset frequency). Standard configuration RS485 comm function, multiple comm protocols available, with linkage synchronization control function.