What can cause an EEFI [EEPROM Control] Fault on an ATV340 series drive?

An EEFI fault on an ATV340 series drive indicates an issue with the drive’s EEPROM (internal control memory). This fault is often related to environmental interference, corrupted stored data, or a hardware-related problem affecting memory integrity.

Possible Causes

• Electromagnetic interference (EMI) or poor grounding
• Power disturbances during operation or startup
• Corrupted configuration data stored in the drive
• Internal control hardware failure

Resolution Steps

Check the environment
Verify that the installation meets electromagnetic compatibility (EMC) requirements, including proper grounding and shielding.

Power-cycle the drive correctly

Switch off the drive

Wait until the display turns off

Wait an additional 15 seconds

Power the drive back on

Restore factory settings (if safe to do so)
Reset the drive to factory defaults only if you have a backup of the configuration saved in SoMove or an HMI.

Contact Schneider Electric support
If the fault persists, the issue may be hardware-related. Contact your local Schneider Electric representative for further diagnostics or replacement options.

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 atdrive.products.support@se.comto 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:

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