PwrDn Data Chksm

What does 117 mean?

An internal data error indicating a checksum mismatch for power-down data. This means the critical data stored for system recovery after a power cycle is corrupt. This could lead to incorrect system recovery or parameter loading, compromising drive stability and reliable operation.

• Corrupted non-volatile memory (NVRAM) storing power-down data due to power fluctuations or age.
• Internal communication errors on the control board during critical data saving operations.
• Firmware bug causing improper data writing or reading of power-down configuration.
• EMI/RFI interference affecting the integrity of data storage during power-down sequences.

Click steps to track your progress.

1. 1

   1. Record all critical drive parameters from the HMI or using programming software.

2. 2

   2. Perform a drive parameter reset to factory defaults (e.g., setting 'P1-02' to '2') to clear potentially corrupt data.

3. 3

   3. Re-enter or restore drive parameters from a known good backup file.

4. 4

   4. Cycle input power to the drive by switching off and on the main disconnect for at least 60 seconds.

5. 5

   5. If the fault persists after parameter reset and power cycle, replace the main control board.