Check that the drive and motor are grounded to a common, low-impedance ground point. 3. Inspect for Physical Damage
Internal faults are frequently caused by external noise "bleeding" into the control circuits. Danfoss Vlt Error Code 2563
If the error returns immediately after a power cycle, the issue is likely physical. Danfoss Drives - Basic Troubleshooting of VLT Series Drives Check that the drive and motor are grounded
High levels of electrical noise or improper grounding can disrupt the sensitive digital signals on the control board, triggering a false internal fault. triggering a false internal fault.