A106 Motor 1 measured overtemperature fault in ABB DCS800 drive indicates that the temperature of Motor 1 has exceeded a safe limit. This means the motor may be overloaded, causing excessive heat generation.

Troubleshooting Steps:

1. Verify that the motor load is within its rated capacity.
2. Monitor the motor current to ensure it's not exceeding the limits.
3. Visually inspect the motor for any signs of damage, overheating, or excessive vibration.
4. Ensure that the motor is adequately cooled by checking the cooling fan and ventilation.