A107 Motor 1 calculated fault in ABB DCS800 drive indicates that the drive's internal calculations have determined that Motor 1 is experiencing an overload condition. This means the motor is drawing more current than its rated capacity, which can lead to overheating and potential damage.

Troubleshooting Steps:

1. Verify that the motor is not overloaded by checking the load torque and speed.
2. Inspect the mechanical components for any signs of damage or wear.
3. Ensure that the motor is receiving the correct voltage and frequency.
4. Review the motor parameter settings, including the rated current, overload protection level, and thermal protection settings.