EM500 Open-Loop Vector Control Inverter User Manual Input power cable is connected to inverter’s input terminals R, S and T. Inverter’s output terminals U, V and W are connected to motor’s input Control circuit terminals are correctly connected to the control devices and terminals. terminals are disconnected. The load motor is idle. Turn on the power switch when the settings above are correct. 、 are output ends of inverter’s DC bus voltage; represents the protective grounding terminal and PB represents cable end of braking resistor. Damages of inverter caused by incorrect wiring of them are not covered in the warranty.
5.2.2Confirm the Power-on Status If inverter works normally after power-on, keypad will display inverter’s present status code and parameters. In case of other abnormal display phenomena, see Chapter 9 Troubleshooting. Running status observation: 1. Check whether load runs at a correct direction. 2. At low-speed running, increase the set frequency only when load machine stabilizes. 3. Change input frequency or rotational speed and observe whether motor has any vibration or noise. 4. During operation, observe the parameters of monitoring code F18.06 and confirm whether inverter output current is normal. 73