User’s Guide for EM760 series high-performance vector inverter 42 5. The energy consumption braking function is not enabled 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 ventilation. 3. The cooling fan fails. 1. The operating environment of the inverter should meet the specifications. 2. Improve the ventilation environment and check whether the air duct is blocked. 3. Replace the cooling fan. E11 Parameter setting conflict 1. There is a logic conflict in parameter settings. 1. Check whether parameters set is illogical before the protection.
E12 Motor overheat 1. The temperature measured by the motor temperature sensor is greater than the set threshold. 2. The motor temperature sensor is disconnected. 1. Check whether the thermal protection threshold of the motor is appropriate. 2. Check whether the sensor is disconnected.