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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
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