Is an ATV320 rated for variable or constant torque loads?
Issue:
Is an ATV320 rated for variable or constant torque loads?
Product Line:
Altivar 320, ATV320
Environment:
All
Cause:
VFD selection
Resolution:
The ATV320 is designed for both variable torque and constant torque loads.
In the Motor Control menu (drC-), there is a parameter Motor Control Type (Ctt) selection for the application. Among others, the basic selection is:
Std (Standard) for a linear V/F ratio which is typical for constant torque loads
uF9 (V/F Quad) for a curved V/F ratio which is typical for variable torque loads