3211 DC-bus overvoltage fault in lenze i550 drive

 

3211 DC-bus overvoltage fault in a Lenze i550 drive indicate that the voltage on the DC bus within the drive has exceeded its safe operating limit.

While the codes might be slightly different due to specific internal software or hardware variations within the drive, the underlying cause and troubleshooting steps remain largely the same.

Potential causes and troubleshooting steps:

1. Drive Internal Components:
   • Check for faulty rectifier, smoothing capacitor, or control circuitry.
   • Solution: Replace the faulty component.
2. Power Supply Issues:
   • Verify input voltage is within the specified range.
   • Solution: Adjust power supply if necessary.
3. Motor Issues:
   • Inspect motor for short circuits or other faults.
   • Solution: Repair or replace the motor if needed.
4. Drive Configuration Issues:
   • Review and adjust drive parameters.
   • Solution: Ensure parameters are set correctly.