Recovery overload power supply unit

What does E325 mean?

The regenerative load from the connected drives exceeds the capacity of the Indramat HVE or HVR power supply unit. This means too much energy is being fed back into the DC bus during deceleration, potentially causing overvoltage or overheating issues.

• Deceleration ramps are set too aggressively, causing high regenerative power.
• The total power regeneration capacity of the HVE/HVR power supply unit is insufficient for the application's demands.
• Drive controller selected has an inappropriately large peak current rating for the regenerative load, leading to high energy feedback.
• External braking resistor (if used) may be undersized or malfunctioning.

Click steps to track your progress.

1. 1

   Reduce the allowable deceleration times for the connected drives in the application parameters to decrease regenerative power.

2. 2

   Evaluate if the Indramat HVE or HVR power supply unit is appropriately sized for the combined regenerative power of all connected drives.

3. 3

   Consider using a drive controller with a smaller peak current capacity if the current setup is oversized for the regenerative load.

4. 4

   Inspect any external braking resistors and their connections, verifying resistance and thermal protection.