Vacon · NXP AFE-II Drive
The heatsink temperature of the drive has fallen below an acceptable operating limit, specifically under –10°C. Operating at excessively low temperatures can affect the performance and lifespan of electronic components.
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Measure the ambient temperature immediately surrounding the drive using a calibrated thermometer. Verify it is within the drive's specified operating range (e.g., 0°C to 50°C).
Inspect the control cabinet for proper sealing against cold drafts and ensure any installed heating elements are functional (e.g., verify thermostat set point and element resistance).
Allow the drive to warm up naturally to ambient conditions, or apply supplementary heating to the control cabinet to raise the internal temperature above –10°C.
Check drive diagnostics for the heatsink temperature reading (e.g., Menu 1-30 'Heatsink temperature') and compare it to the measured ambient temperature.
If the ambient temperature is well above the low limit and the fault persists, it may indicate a faulty internal temperature sensor requiring drive service.