... 3PH-3PH 2.2KW MULTI-FUNCTIONAL VFD/AC DRIVE/FREQUENCY INVERTER 1. SY8000 AC DRIVE/VFD Features:SANYU SY8000 ... RS485+,RS485-4 bits LED displaysetting frequency, output frequency, output voltage, output current, motor speed, output torque, switch value ... under voltage, current limitation, over current, overload of inverter, overload of motor, overheat, overvoltage stallout, load short circuit, phase ...