CTRL B TEMP

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The ABB ACS800 control board temperature has exceeded 88°C, indicating an overheating condition of the drive's sensitive control electronics. Sustained high temperatures (3.06 FW 2 bit 7) can lead to unreliable operation, premature component aging, or permanent damage to the control board.

• High ambient temperature around the drive or within the electrical cabinet.
• Insufficient or blocked airflow to the control board or its cooling components.
• Malfunction of the main or any additional cooling fans within the drive chassis.
• Accumulation of dust or debris on the control board or its heatsinks, impeding heat dissipation.

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1. 1

   Check the ambient conditions and ensure the temperature inside the drive enclosure is within the ABB ACS800 drive's specified operating range.

2. 2

   Inspect all cooling fans (main and additional) for proper operation, ensuring they rotate freely and in the correct direction; clean if dusty.

3. 3

   Verify that air inlets and outlets on the drive and the electrical cabinet are clear of obstructions and dust accumulation.

4. 4

   Clean any dust or debris from the control board and its associated heatsinks using dry, compressed air, ensuring no residue is left.

5. 5

   Ensure proper ventilation of the electrical cabinet where the drive is installed, potentially by checking cabinet fans or filters.