What is a control eeprom (EEF1) error on ATV320 drive?
Resolution:
What causes this fault?
This fault generally indicates an issue with the drive's control memory or control hardware. Common causes include:
- Internal data corruption or a read/write error within the control block memory.
- Electrical noise or electromagnetic interference (EMC) affecting drive operation.
- Failure of the main control board or related hardware components.
How can I troubleshoot this fault?
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Power Cycle the Drive
- Remove power from the drive completely.
- Wait until the display is fully blank before reapplying power.
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Inspect the Installation Environment
- Verify proper grounding and shielding practices.
- Check control and power wiring for potential sources of electrical noise or EMC interference.
- Ensure the drive is installed according to recommended EMC guidelines.
-
Perform a Factory Reset
- If the drive remains accessible, back up all parameter settings.
- Restore the drive to factory default settings and retest operation.
If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:
Frequently Asked Questions - Schneider Electric (se.com)
If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us at drive.products.support@se.com to create a case with our Technical Support Team.
If you are not located in North America, please contact your local Customer Care Center for assistance:
Released for: Schneider Electric USA
