Features 1、MULTIPLE CONTROL: With 8 stage programmable, multiple stage speed control, a variety of operation modes are optional, with simple PLC operation, optional speed control mode. 2、ANALOG INPUT OUTPUT: The motor frequency converter comes with standard RS485 RTU mode, with a variety of analog input and output: 0‑5V and 0‑10V, 4‑20mA and 0‑20mA. 3、HIGH PERFORMANCE: Adopt PID control, wind pressure constant pressure control, which is energy saving, has low noise and low electromagnetic interference. 4、MULTIPLE FUNCTION: The governor has multiple motor protection methods and stepless speed regulation, low frequency and high torsion, energy saving and power saving. 5、GOOD PROTECTION: Overcurrent, overvoltage and undervoltage, module failure, overheating, short circuit, input and output lack and other protections. Specification Item Type: Frequency Converter Model: AT904-5.5KW Input Voltage: Single Phase 220VAC 50/60Hz Output Voltage: 3 Phase 0-380VAC 0-400Hz Maximum Output Current: 30A Suitable Motor Power: 5.5KW (8HP) Filter: Built in Filter Application: Universal DC Power Supply Property: Voltage Type Control Mode: V/F Open Loop Output Voltage Regulation Mode: PWM Control Appearance: ABS Plastic Shell Product Size: Approx. 25 x 18 x 16.5cm / 9.8 x 7.1 x 6.5in (manual measurement has a certain error) Uses: Control the start, stop, speed regulation and forward and reverse rotation of the motor to meet the conditions required for production or equipment use, widely used in fans, pumps, air compressors, etc. Package List 1 x Frequency Converter 1 x User Manual