Motor overtemperature (+150°C)

What does OH3 mean?

The motor temperature, detected via resolver or incremental encoder, has exceeded +150°C. This signifies severe thermal overload due to impermissible continuous current or frequent/prolonged acceleration processes. A missing PTC/temperature contact can also prevent proper monitoring.

• Motor temperature sensor reading exceeds +150°C, indicating severe overheating.
• Motor winding insulation is at risk of damage due to extreme temperature.
• Sustained operation under very high load conditions or stalled state.
• Failure of motor cooling system (fan, airflow).

Click steps to track your progress.

1. 1

   Check drive dimensioning to ensure the motor is not continuously overloaded.

2. 2

   Correct wiring if no PTC/temperature contact is connected to enable proper temperature sensing.

3. 3

   Switch off monitoring by setting C0583 = 3.