EEPROM Memory DWEZ Data Error

What does dWF1 mean?

This fault indicates an error in the drive's EEPROM peripheral circuit or a problem with the EEPROM data itself, often stemming from a corrupted DriveWorksEZ program saved to the EEPROM. This issue affects the drive's ability to retain critical program data and configuration. If unresolved, the drive will fail to operate correctly or maintain its programmed parameters.

• Corrupted DriveWorksEZ program data stored in the EEPROM due to improper download, power interruption during write, or unexpected shutdown.
• Electrical noise or transient voltage spikes on the control power supply (e.g., 24VDC) causing data corruption during EEPROM access.
• Failure of the EEPROM memory chip or its peripheral circuitry within the drive hardware, preventing reliable data storage.
• Incompatible DriveWorksEZ program version saved to the EEPROM from a different drive model or firmware version.

Click steps to track your progress.

1. 1

   Back up current drive parameters if possible using a USB copier or DriveWorksEZ software (if communication is stable).

2. 2

   Perform an all-parameter initialization (e.g., set P1-03 = 2220) to clear potentially corrupted data from the EEPROM.

3. 3

   Re-download the verified DriveWorksEZ program and drive parameters to the drive's EEPROM. Verify program integrity after download.

4. 4

   Verify control power supply voltage stability using a multimeter (e.g., measure voltage at terminals L1C/L2C, +24V, SC) and check for transient disturbances.