Power unit: Air intake overtemperature

What does F30035 mean?

The air intake temperature in the power unit has exceeded the permissible limit, typically 55 °C. This condition signifies critical overheating of the incoming air, often caused by high ambient temperatures, insufficient airflow, or a fan failure. This fault forces an OFF1 or OFF2 reaction, stopping the drive, and cannot be acknowledged until the temperature falls below the alarm threshold of A05002.

• Control cabinet ventilation system malfunction (e.g., fan failure, blocked exhaust vents, clogged air filters).
• Ambient room temperature consistently exceeding the drive's absolute maximum operating temperature (e.g., >55°C).
• Recirculation of hot exhaust air from the cabinet or nearby equipment back into the drive's air intake.
• Incorrect drive mounting orientation preventing proper natural convection or forcing air against the cooling design.

Click steps to track your progress.

1. 1

   Measure the air intake temperature directly at the drive using a thermal sensor or calibrated thermometer.

2. 2

   Verify the operation of all control cabinet cooling fans and clean any clogged air filter mats.

3. 3

   Check for obstructions in the cabinet's exhaust path, ensuring hot air can escape freely.

4. 4

   Monitor the control cabinet's internal temperature and external ambient temperature over time using data loggers.

5. 5

   Review the drive's installation manual for correct mounting clearances and ambient temperature specifications.