Undervoltage in mains

What does E2814 mean?

The incoming AC mains voltage is below the acceptable operating threshold for the drive's power section. This can lead to insufficient DC bus voltage and operational issues.

• Incoming AC supply voltage sag or brownout.
• Incorrect mains voltage setting in drive parameters for the actual supply.
• Loose or high-resistance connections in the mains power circuit.
• Overloaded mains supply causing voltage drop.

Click steps to track your progress.

1. 1

   Measure the incoming AC mains voltage at the drive's input terminals and verify it is within the drive's specified operating range.

2. 2

   Check all connections in the mains power circuit, including circuit breakers, contactors, and terminal blocks, for tightness and corrosion.

3. 3

   Verify the mains voltage parameter setting in the drive configuration matches the actual incoming supply voltage.

4. 4

   Monitor the mains voltage over time to detect transient sags or brownouts, especially during peak load conditions.