Cause : Internal error 3 (Internal Communication) comes when there is a problem with the internal communication between the drive's components. This can prevent the drive from functioning properly and may be due to issues with the drive's hardware, software, or configuration.

INF3 Internal error 3 fault in Schneider ATV610 drive indicate internal communication error. This means a problem with the communication between various components within a device.

• Verify the wiring on device control terminals (internal 10V supply for analog inputs overloaded).