AC Drive Undertemperature Fault

What does 13 mean?

The internal temperature of the AC drive's heatsink or power board has fallen below the specified minimum operating temperature. This is usually caused by an excessively low ambient temperature surrounding the drive. Operating the drive outside its specified temperature range can lead to unstable operation or premature component failure.

• Ambient air temperature surrounding the AC drive is below the manufacturer's minimum operating specification (e.g., below -10°C).
• Failure or continuous operation of an external cooling system (e.g., enclosure cooler) designed for higher temperatures, causing overcooling.
• Faulty internal temperature sensor within the AC drive providing an erroneously low temperature reading.
• Drive enclosure situated in a drafty location or exposed to extreme cold from external processes, without adequate insulation.
• Incorrect minimum temperature threshold configured in a relevant drive parameter (e.g., P8-01 for temperature monitoring), if adjustable.

Click steps to track your progress.

1. 1

   1. Measure the ambient air temperature directly in front of the AC drive's cooling intake vents using a calibrated thermometer.

2. 2

   2. Verify the drive's internal temperature reading from the control panel or diagnostic menu (e.g., parameter P8-02) and compare it to the measured ambient.

3. 3

   3. Inspect the drive's enclosure for proper sealing and insulation against cold drafts from external environments.

4. 4

   4. Adjust or disable any external cooling systems that might be causing the drive's internal temperature to drop below the specified minimum (e.g., 0°C).

5. 5

   5. Review the drive's data sheet for minimum operating temperature limits and compare with the actual operating environment.