E44.01 fault in inovance IS580 drive indicates "Drive parameter setting fault". This means one or more critical parameters in the drive are set incorrectly, inconsistently, or outside acceptable ranges, causing the drive to stop or prevent operation for safety or protection.

• Increase F2-10.
• Let the drive re-identify the motor parameters correctly.
• Some combinations are invalid (e.g., enabling closed-loop mode without enabling encoder input).
• Reset and re-enter values carefully if unsure.