... SPEED DRIVE.1. SY-8000G 380V three phase ac drive, frequency inverter, ac inverter, frequency converter, variable frequency drive - Constant ... -loop outputOne terminalProgrammable relay outputcontactor capacity: 250V AC/3A or 30V DC/1ASerial communication portRS-485 ... under voltage, current limitation, over current, overload of inverter, overload of motor, overheat, overvoltage stallout, load short ...