How can resolve problem 4290 INV OVER TEMP Fault in ABB ACS800 Drive ?
Cause : Converter module temperature is excessive.
Check ambient temperature.
If it exceeds 40°C, ensure that load current does not exceed derated load capacity of drive. See appropriate hardware manual.
Check that ambient temperature setting is correct (parameter 95.10).
Check converter module cooling air flow and fan operation.
Cabinet installation:
Check cabinet air inlet filters.
Change when necessary.
See appropriate hardware manual.
Modules installed in cabinet by user:
Check that cooling air circulation in cabinet has been prevented with air baffles.
See module installation instructions.
Check inside of cabinet and heatsink of converter module for dust pick-up.
Clean when necessary. Reset and restart after problem is solved and let converter module cool down.