Environmental Conditions 
Environmental Conditions
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Specify the motor ambient temperature and elevation. In the example below, with an ambient temperature of 45oC at 3000m above sea level, the effective motor continuous torque de-rating factor is:
The load factor is applied to the motor rated continuous torque/force curve. See Motor Torque vs Speed for rotary motors and Motor Force vs Speed for linear motors.
Drive
Specify the drive ambient temperature and elevation. In the example below, with an ambient temperature of 45oC at 1500m above sea level, the effective drive continuous current de-rating load factor is:
The load factor is applied to the inverter rated continuous current. See Motor Torque vs Speed for rotary motors and in Motor Force vs Speed for linear motors. The load factor is also applied to the infeed and bleeder rated continuous power.
Depending on how a drive's peak valus are rated, the load factor can also be applied to the inverter peak current rating and the infeed and bleeder peak power ratings. This is dependent on the drive database variable 'LF_Typ'.
