Cause : AI1 current loss comes when the drive has lost the current signal from Analog Input 1 (AI1), which is typically used for measuring motor current. This typically comes when the current sensor connected to AI1 is faulty or disconnected.

"F033" fault in Schneider ATV310 drive indicate "AI1 Current Loss". This means a loss of signal from the analog input channel 1 (AI1), which is often used for measuring motor current.

Follow these steps to correct the fault:

1. Check Current Sensor: Verify the current sensor's operation and connections.
2. Inspect Wiring: Examine the wiring between the current sensor and the drive for any damage or loose connections.
3. Verify Analog Input Configuration: Ensure AI1 is correctly configured to measure current.