Data not compl. saved before powerdown

Hva betyr 30340 ?

Saving of the current parameter settings was unexpectedly interrupted by a power disconnection, resulting in an incomplete save operation. The drive may have loaded an older parameter set from backup.

• Sudden or unexpected power outage (main power or control power) to the inverter during the active parameter saving process to non-volatile memory.
• Manual disconnection of power to the drive while a save command (e.g., P99.01=1) was still executing or awaiting completion acknowledgment.
• Transient voltage spike or sag on the control power supply (24VDC) that caused a momentary reset or interruption during the memory write cycle.
• Internal power supply instability within the drive preventing a complete and reliable write operation to the non-volatile memory (EEPROM or similar).

Klikk på steg for å spore fremgangen.

1. 1

   1. Reconnect power, allow the drive to fully initialize, then manually execute a parameter save command (e.g., P99.01=1) and confirm successful completion via the HMI or software.

2. 2

   2. Verify the stability of the control power supply (e.g., 24VDC at control terminals) and main power supply (L1, L2, L3) with a multimeter to rule out voltage fluctuations.

3. 3

   3. Check the drive's fault history or event log for any concurrent undervoltage, power supply, or internal hardware faults that might indicate a power issue.

4. 4

   4. Download the correct parameter set from a known good backup file using the drive's programming software, then ensure a successful save to the drive's non-volatile memory.

5. 5

   5. Implement controlled power-down procedures, ensuring sufficient time (typically 5-10 seconds) is allowed for all parameter writes to complete after a save command.