Drive initialization

What does 4640 mean?

The drive has not been fully initialized after being created in the system. This indicates that subsequent critical steps, such as I/O initialization, drive parameterization, and a system reset, have not been performed. Without complete initialization, the drive cannot enter an operational state and will not respond to motion commands.

• New drive installation where the mandatory initialization routine (e.g., parameter upload, I/O mapping, axis assignment) has not been completed.
• Firmware update failure or incomplete firmware flash, leaving the drive in an uninitialized or partially configured state.
• Factory reset command executed without subsequent reloading of a valid parameter set, resulting in default or invalid settings.
• PLC or control system failing to send the required initialization commands or valid axis parameters during startup communication.
• Corrupted non-volatile memory preventing the drive from loading its default or stored configuration upon power-up.

Click steps to track your progress.

1. 1

   Connect to the drive with the commissioning software and perform a full parameter upload from a known good configuration file, then save to non-volatile memory.

2. 2

   Execute a full drive reset (e.g., via parameter P0-01 = 1 or a specific reset command) to ensure the new parameters are applied.

3. 3

   Verify that all required I/O mappings (e.g., digital inputs DI1-DI8, analog inputs AI1-AI2) are correctly configured in the drive's I/O parameter group (e.g., P7-xx).

4. 4

   Check the communication link between the PLC/controller and the drive to ensure initialization commands are being received (e.g., monitor communication status bits or frames).

5. 5

   If applicable, re-flash the drive firmware to the latest stable version according to the manufacturer's instructions.