1. Whether the deceleration time is too short, extend the deceleration time if the process permits

2. Whether the load inertia is too large, whether there is a sudden change in the overload of load deceleration

3. Motor parameters re-self-tuning

4. Reduce the flux braking gain

1. Check whether the AC drive parameters are set correctly and whether the motor parameters are correct.

2. Whether the load changes suddenly during the operation.

3. Choose or replace the AC drive with higher power.

1. Whether the acceleration time is too short, the process allows the extension of the acceleration time

2. Check whether the input voltage is high, adjust the voltage to normal Fan (380V ± 15%), so that the DC bus voltage is not higher than 800V.

3. Determine whether the AC drive has an external force dragging the motor during the acceleration process, if there is an external force driving, you can cancel this force or add a braking device.

4. Check whether the AC drive parameters are set correctly, or whether the motor parameters are correct, if not, please change the correct parameters according to the actual situation.

1. Whether the deceleration time is too short, the process allows the extension of the deceleration time

2. Check whether the input voltage is high, adjust the voltage to the normal range (380V±15%), so that the DC bus voltage is not higher than 800V.

3. Whether the load inertia is too large, whether there is an external force dragging the motor during deceleration, if so, cancel the external force or set up free stopping

4. Increase the energy consumption braking device

1. Check whether the input voltage is high, adjust the voltage to the normal range (380V±15%), so that the DC bus voltage is not higher than 800V.

2. Check whether the AC drive parameters or motor parameters are set correctly

3. Check whether there is a sudden load increase when the AC drive is running.

4. Increase the energy consumption braking device

5. Check whether there is any problem with motor insulation

1. Check whether the incoming power supply voltage is too low or fluctuates greatly, if so, the whole grid voltage to the normal range

2. Check whether the voltage displayed on the keyboard is normal, and whether the voltage level of AC drive is the same as that of the incoming power supply.

3. Confirm whether the AC drive 24VDC power supply is normal, and whether the buffer resistor relay is absorbed.

1. Check whether the incoming power supply is normal (lack of phase or three-phase imbalance)

2. Input power is normal, phase loss detection circuit failure

1. Check whether the motor access is normal, poor contact or motor actual phase loss

2. Drive board or module output problems (without motor measurement of three-phase output voltage is normal)

1. Parameter setting abnormality, torque increase setting is too large

2. Appropriate extension of acceleration and deceleration time

3. Whether the motor parameters are set correctly

4. Check whether there is a problem with the insulation of the motor

5. Replace the higher power AC drive

1. Whether the motor parameters are set normally

2. Whether the mechanical load is blocked or load sudden phenomenon

3. Replace the higher power motor

1. Ambient temperature is too high

2. AC drive cooling fan is normal, whether the air duct is blocked

3. Temperature detection current problem