INTERNAL FAULT

Hva betyr IF3 ?

An internal EEPROM memory fault has been detected.

• EEPROM

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1. 1

   Verify incoming supply voltage (L1, L2, L3) at the drive terminals against the specified nominal voltage range.

2. 2

   Inspect cooling fan operation and surrounding area for obstructions or excessive dust build-up affecting ventilation.

3. 3

   Perform a complete power cycle of the Altivar 312 drive, ensuring sufficient time for DC bus discharge before reapplying power.

4. 4

   Access the drive's parameter settings via the integrated display or configuration software, and verify their integrity. Consider reloading a backup configuration or resetting to factory defaults if the error persists and allows operation.