Cause : Overcurrent during acceleration comes when the drive has detected an excessively high current during the acceleration phase of the motor.

"E02.05" in inovance MD800 drive indicate "Overcurrent during acceleration". This means the motor is trying to ramp up to speed, but the current draw exceeds the drive's limits.

Possible Causes:

1. Acceleration Time Too Short: If the acceleration time is set too short, the drive might try to accelerate the motor too quickly, causing a spike in current.
2. Mechanical Load Issues: The mechanical load on the motor may be too heavy or jammed, requiring more current than the drive can supply during acceleration.
3. Motor Parameter Mismatch: Incorrect motor parameters, such as motor impedance or rated current, can lead to improper current regulation during acceleration.
4. Power Supply Issues: Fluctuations or inadequacies in the power supply can lead to overcurrent conditions, especially during high-demand periods like acceleration.
5. Drive or Motor Fault: There could be a fault in the drive, motor, or cabling causing abnormal current draw.

Troubleshooting Steps:

1. Increase Acceleration Time:

   • Extend the acceleration time in the drive's parameter settings to allow the motor to reach the desired speed more gradually. This can reduce the current spike during acceleration.
   • Refer to the drive’s manual for guidance on setting an appropriate acceleration time.

2. Check Mechanical Load:

   • Inspect the mechanical system connected to the motor. Ensure there are no blockages, excessive loads, or mechanical faults that could be increasing the torque demand during acceleration.
   • Consider reducing the load or ensuring the system moves freely.

3. Verify Motor Parameters:

   • Ensure that all motor parameters (such as rated current, voltage, and impedance) are correctly entered in the drive.
   • Incorrect settings can cause the drive to deliver inappropriate current during acceleration.

4. Examine Power Supply:

   • Check the power supply to ensure it is stable and sufficient for the drive and motor's requirements.
   • Look for any signs of voltage dips or instability during acceleration, which could contribute to overcurrent conditions.

5. Inspect Drive and Motor:

   • Inspect the drive, motor, and associated wiring for any signs of damage or wear that might cause irregular current draw.
   • If possible, test the motor with another drive or test the drive with another motor to isolate the issue.

6. Enable Current Limit Function:

   • If available, enable the current limit function in the drive to automatically reduce the risk of overcurrent during acceleration.