LOW LINE ALARM

What does 406 mean?

The input AC line voltage sagged more than 10% below the nominal line voltage as set at parameter #9. This does not shut down the drive but is an indication that work is needed to avoid future F904 Low Line faults.

• Input AC line voltage sagged more than 10% below nominal.
• Nominal line voltage (parameter #9) set incorrectly for the supply.

Click steps to track your progress.

1. 1

   Measure the input AC line voltage.

2. 2

   Check and correct the setting of parameter #9 (nominal line voltage).

3. 3

   Investigate the AC power supply for voltage sags or instability.