Drive Overload 2 (Ambient Temperature)

What does OL2 mean?

An OL2 fault indicates that the drive's internal overload protection level has been automatically reduced because the ambient temperature around the drive exceeds its specified rating, as configured in L8-12. This protects the drive's output power components from overheating under high load conditions. Continuous operation in an overly warm environment can lead to component degradation and drive failure.

• Ambient temperature in the drive's electrical enclosure or immediate vicinity exceeds the drive's maximum specified rating.
• Inadequate ventilation or cooling within the control cabinet housing the drive, causing heat buildup.
• External heat sources (e.g., other equipment, direct sunlight) generating excessive heat near the drive.
• Blocked air circulation paths to the drive's cooling fins or obstructed exhaust vents.
• The drive is consistently operating at or near its maximum current limit in an already warm environment.

Click steps to track your progress.

1. 1

   1. Measure the ambient temperature inside the control cabinet with a thermometer and compare to the drive's specified operating range.

2. 2

   2. Verify that control cabinet cooling fans are operational and air filters are clean and unobstructed.

3. 3

   3. Ensure all drive ventilation openings are clear of dust, debris, or any physical obstructions.

4. 4

   4. Evaluate the enclosure for proper sizing, heat dissipation (e.g., active cooling or air conditioning), and airflow patterns.

5. 5

   5. Consider reducing the load on the drive or upsizing the drive if it frequently trips due to high ambient temperature conditions.