Goals and Symptoms

Speed drive - Speed range
ATV

Causes and Fixes

For a speed drive, the speed range is the ratio between the output maximum frequency and the minimum frequency where the nominal torque is available.

example for a 50Hz motor :

Speed range 1/50 means the drive is able to give the nominal torque between 1Hz to 50Hz.

Speed range 1/100 means the drive is able to give the nominal torque between 0.5Hz to 50Hz.