9: ERROR drive overheat fault in KEB COMBIVERT R6 Drive indicates an over-temperature condition at the commutation choke. This means the temperature sensor detected excessive heat, likely due to poor ventilation, and the delay timer has expired.
Cause:
Over temperature commutation choke; temperature sensing on the commutation choke indicates the choke is too hot and the overheat delay timer has run out.
Remedy:
Allow the commutation choke to cool down. Check ventilation and structural choke layout.
