Drive not ready during axis start
Beckhoff · TwinCAT 2 NC
¿Qué significa 4225 ?
During the startup sequence of an axis, the associated drive is found to be in a non-ready state. Possible causes include the drive being in a hardware error state, still in its power-up or boot-up phase (which can take several seconds after a reset), or lacking the necessary controller enable signal. This prevents the axis from becoming operational.
Causas comunes
- Associated servo drive (e.g., via EtherCAT, PROFINET) is in a fault state (e.g., overcurrent, overvoltage, motor temperature).
- Drive has not completed its power-up and initialization sequence (e.g., still booting or performing self-diagnostics).
- No power supply to the servo drive (e.g., missing 24VDC control power, missing 400VAC main power).
- Communication error between the NC controller and the drive (e.g., broken EtherCAT cable, incorrect IP address).
- Drive parameters preventing it from reaching a ready state (e.g., incorrect motor type, encoder setup, safety configuration).
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
1. Check the diagnostic display or LEDs on the associated servo drive for any active fault codes or warnings.
- 2
2. Verify main power supply (e.g., 400VAC phase-to-phase) and control power (e.g., 24VDC) to the servo drive terminals.
- 3
3. Inspect the communication cable (e.g., EtherCAT X2 connector) between the NC and the drive for breaks or loose connections.
- 4
4. Cycle power to the servo drive independently and observe its boot-up sequence and readiness status.
- 5
5. Review drive parameters (e.g., P01 'MotorType', P02 'EncoderType') to ensure they match the connected hardware.
- 6
6. Confirm the drive firmware is compatible with the NC controller's firmware version as per manufacturer documentation.