HCA

The load is too heavy.

• Decrease the load for applications with repetitive starts and stops.

• Replace the drive with a larger capacity model.

The acceleration time is too short.

• Calculate the torque necessary during acceleration related to the load inertia and the specified acceleration time.

• Increase the values set in C1-01, C1-03, C1-05, or C1-07 [Acceleration Times] until you get the necessary torque.

• Increase the values set in C2-01 to C2-04 [S-Curve Characteristics] until you get the necessary torque.

• Replace the drive with a larger capacity model.

The drive is trying to operate a specialized motor or a motor that is larger than the maximum applicable motor output of the drive.

• Examine the motor nameplate, the motor, and the drive to make sure that the drive rated current is larger than the motor rated current.

• Replace the drive with a larger capacity model.

The current level temporarily increased because of speed search after a momentary power loss or while trying to Auto Restart.

If speed search or Auto Restart cause an increase in current, the drive can temporarily show this alarm. The time that the drive shows the alarm is short. No more steps are necessary to clear the alarm.