Parameter Chksum

What does F100 mean?

The non-volatile memory storing the drive's parameters has detected a checksum error, indicating data corruption. This means the drive's saved configuration settings are invalid or unreadable, potentially preventing proper startup or operation. A factory reset is typically required to restore integrity.

• Corruption of the non-volatile memory (e.g., EEPROM, Flash) within the drive's control module where parameters are stored.
• Unstable power supply to the control module during parameter write operations (e.g., brownout, transient spikes).
• Electrostatic discharge (ESD) event damaging memory components during handling or operation.
• Firmware bug causing incorrect checksum calculation or memory write errors.
• Internal hardware defect on the control module affecting memory integrity.

Click steps to track your progress.

1. 1

   1. Perform a complete drive parameter reset to factory defaults (e.g., P0-02 = 2) and then manually re-enter all critical parameters.

2. 2

   2. If a backup copy of parameters exists (e.g., on a HIM, or uploaded to software), download the parameters to the drive.

3. 3

   3. Power cycle the drive completely (disconnecting mains power for at least 60 seconds) and then attempt to write a single parameter change.

4. 4

   4. Monitor the input power quality to the drive during parameter saving operations using a power analyzer to detect voltage sags or spikes.

5. 5

   5. Record the drive's firmware version and search manufacturer's knowledge base for known checksum issues or firmware updates.