0: No protection
1: Common motor (with low-speed compensation). As
the cooling effect of common motor will be degraded in
low speed, the corresponding electronic thermal
protection value should also be adjusted properly. The
low compensation here means to lower the overload
protection threshold of the motor whose running
frequency is below 30Hz.
2: Frequency-variable motor (without low speed
compensation). As the cooling effect of frequency-
variable motor is not affected by the rotating speed, there