User Guide of EM730 Series Inverter 47 short, and the motor has too much regenerated energy. 2. The braking unit or braking resistor forms an open circuit. 3. The braking unit or braking resistor does not match. 4. The power voltage is too high. 5. The energy consumption braking function is not enabled 2. Check the wiring of the braking unit and braking resistor. 3. Use a suitable braking unit/braking resistor. 4. Reduce the power voltage to the specified range. 5. For the model of the built-in braking unit, set F15.30 to 1, and enable the energy consumption braking. E06 Undervoltage 1. The input power supply is subject to phase loss. 2. The terminals of the input power supply are loose. 3.
The voltage of the input power supply drops too much. 4. The switch contacts of the input power supply are aging. 1. Check the input power supply and wiring. 2. Tighten the screws of input terminals. 3. Check the air circuit breaker and contactor. E07 Input phase loss 1. The input power supply is subject to phase loss. 2. The input power supply fluctuates greatly. 1. Check the input power supply. 2. Check the wiring of the input power supply. 3. Check whether the terminal is loose 4. Use a voltage regulator on the input side. E08 Output phase loss 1. The output terminals U, V and W have phase losses. 1. Check the connection between the inverter and motor. 2.
Check whether the output terminal is loose. 3. Check whether the motor winding is disconnected. E09 Inverter overload 1. The acceleration and deceleration time is too short. 2. In the V/F drive mode, the V/F curve setting is unreasonable. 3. The load is too heavy. 4. The braking time is too long, the braking intensity is too high, or DC braking is enabled repeatedly. 1. Increase the acceleration and deceleration time. 2. Reasonably set the V/F curve. 3. Use the inverter that matches the load. 4. Reduce the braking time and braking intensity. Do not enable DC braking repeatedly. E10 Inverter overheat 1. The ambient temperature is too high. 2. The inverter is subject to poor 1.
The operating environment of the inverter should meet the specifications.