ABB · ACS850 Standard Program Firmware
The drive's internal temperature sensor has detected a dangerously high temperature, exceeding the model-dependent TEMPERATURELIMITFATAL threshold (e.g., 80°C for e190 3A/e180, 75°C for e190 6A/9A). Sustained over-temperature operation can severely reduce the lifespan of electronic components and lead to drive failure.
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1. Clear any obstructions from the drive's ventilation openings and heatsink fins using compressed air (power off first).
2. Measure the temperature inside the control cabinet at the drive's location with a calibrated thermometer.
3. Monitor the drive's internal temperature via parameter (e.g., P9-01) and compare it against the specified limits.
4. Verify the operation of the internal cooling fan by visual inspection of blade rotation or listening for fan noise.
5. Reduce the motor's average current draw by optimizing motion profile or adjusting motor parameters (e.g., P1-03).
6. Check for proper cabinet ventilation, including functioning exhaust fans and clean air filters.