Power unit: Air intake overtemperature

What does F30035 mean?

The temperature at the power unit's air intake has surpassed its permissible limit, typically 55°C for air-cooled units. This is often caused by high ambient temperatures or a malfunctioning cooling fan. Continued operation above this limit can lead to hardware damage and system shutdown.

• Ambient air temperature in the control cabinet exceeding the drive's maximum allowable intake temperature (e.g., 55°C).
• Insufficient cabinet ventilation due to clogged filter mats, failed cabinet cooling fans, or improper fan operation.
• Heat recirculation where hot exhaust air from other equipment (e.g., braking resistors) is drawn back into the drive's intake.
• Inadequate spacing between the drive and other heat-generating components inside the cabinet.
• A faulty internal temperature sensor providing an erroneous high reading at the air intake.

Click steps to track your progress.

1. 1

   Measure the ambient air temperature directly at the drive's air intake opening using a calibrated digital thermometer.

2. 2

   Inspect and clean or replace control cabinet filter mats and verify the operation of all cabinet cooling fans.

3. 3

   Check for adequate clearance distances (e.g., 100mm top and bottom) around the power unit as specified in the drive manual.

4. 4

   Relocate or shield other high-heat components (e.g., braking resistors) if they are causing localized heating near the drive's intake.

5. 5

   Monitor the drive's operating conditions (e.g., output current, Parameter P2-01) to ensure it is not consistently running at overload.