Over Temp.

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An internal temperature sensor has registered a temperature exceeding its predefined limit, or the sensor itself is disconnected or short-circuited. This indicates inadequate cooling, excessive load, or a sensor malfunction. Overheating can lead to premature component failure and severe damage to the drive.

• Drive cooling fan failure (e.g., motor seized, blades obstructed) preventing airflow.
• Ambient temperature in the enclosure or room exceeding the drive's specified operating limits (e.g., 40°C).
• Heatsink fins or cooling channels clogged with dust, dirt, or debris.
• Excessive motor load causing the drive to operate at or above its continuous current rating (e.g., P1-03 for motor current).
• Internal temperature sensor (e.g., NTC thermistor) failure, open circuit, or short circuit.
• Inadequate cabinet ventilation or incorrect sizing of the enclosure for the drive's heat dissipation.

Klikk på steg for å spore fremgangen.

1. 1

   Inspect drive cooling fan for operation and listen for unusual noises; verify fan blades are clear of obstructions.

2. 2

   Measure ambient temperature inside the electrical enclosure and compare to drive's rated operating temperature.

3. 3

   Clean drive heatsink fins and ventilation channels using compressed air or a soft brush.

4. 4

   Monitor drive output current (e.g., LCP display) and compare to nominal motor current (P1-03) to assess load.

5. 5

   Verify resistance of internal temperature sensor (if accessible) and compare to manufacturer's specifications (e.g., 10k Ohm at 25°C).

6. 6

   Check drive parameters related to thermal management (e.g., P1-55 for overload warning limits) for correct settings.