Output Filter Fan Overtemperature

What does FF83 mean?

The fan for the drive's output filter is experiencing excessive temperature. This typically occurs in step-up drives and indicates inadequate cooling, which can lead to overheating of the filter components and potential damage to the output filter if not resolved promptly.

• Blocked airflow to the output filter cooling fan due to dust, debris, or restricted cabinet ventilation (e.g., filter mat clogged).
• Failure of the output filter fan motor (e.g., fan not spinning, bearing seizure).
• High ambient temperature in the drive cabinet exceeding specified limits (e.g., >40°C).
• Continuous high current operation through the output filter components causing excessive heat generation.
• Faulty temperature sensor on the output filter fan assembly.

Click steps to track your progress.

1. 1

   Inspect the output filter fan for dust accumulation, debris blockage, or physical damage to blades. Clean fan blades and grille.

2. 2

   Verify the fan is spinning freely and operating correctly by applying nominal voltage to its power terminals (e.g., 24VDC, 230VAC).

3. 3

   Measure the internal cabinet temperature near the drive's output filter using a digital thermometer; ensure it is within specified operating range.

4. 4

   Check for proper ventilation in the control cabinet (e.g., clear air intake/exhaust, functioning cabinet fans).

5. 5

   Monitor the motor current (e.g., r0027) during operation to identify if the drive is consistently operating near or above its rated current.