Drive Short-Time Power Overload

What does 19 mean?

The drive has detected an excessive power demand that is too high for its specified rating over a short duration. This suggests that the drive itself may be undersized for the connected motor and load, or the current load is momentarily exceeding its capabilities. Repeated short-time overloads can lead to drive component stress and eventual failure.

• Excessive dynamic load during acceleration or sudden torque demands, exceeding the drive's short-time overload capability.
• AC drive is undersized for the motor and application, where peak current demands exceed the drive's maximum transient current rating.
• Fast acceleration ramps (e.g., P2-02 too short) or deceleration ramps (e.g., P2-03 too short) requiring high instantaneous current.
• Incorrect motor data (e.g., P1-07 Motor Rated Current) entered into the drive, leading to an inaccurate internal current model.
• Intermittent mechanical binding or impact loads on the driven equipment causing sudden current spikes.

Click steps to track your progress.

1. 1

   1. Monitor the drive's peak output current (e.g., parameter P1-05 or a max current diagnostic) during operation to identify the magnitude of current spikes.

2. 2

   2. Increase acceleration time (P2-02) and/or deceleration time (P2-03) to reduce the instantaneous current demand during transients.

3. 3

   3. Verify that the AC drive's continuous and overload current ratings (from its nameplate) are sufficient for the motor's full load and peak demands.

4. 4

   4. Confirm the accuracy of motor parameters (P1-01 to P1-07) entered into the drive's configuration.

5. 5

   5. Inspect the mechanical system for any sudden load changes, impacts, or friction that could cause transient overloads.