Cause : Undervoltage comes when the input voltage to the drive has dropped below the allowable limits. This fault comes due to line supply too low or transient voltage dip.

"F030" fault in Schneider ATV310 drive indicate undervoltage condition. This means that the input voltage to the drive has dropped below the allowable minimum level.

Follow these steps to correct the fault:

1. Check Line Voltage: Verify that the input voltage to the drive is within the specified range.
2. Inspect Power Wiring: Check the power wiring for any resistance or connections that might cause a voltage drop.