Characteristic values for dynamics

 

U/f

VFCPLUS

CFC

ELSM®

Torque control time

≥ 2 msValid in voltage control range, in field weakening range < 5 ms.

≥ 150 µs

Time constant
speed controller

≥ 4 – 6 ms

≥ 2 ms

≥ 6 ms

Rotational speed ripple

The speed ripple is mainly determined by the total mass moment of inertia, the torque ripple, and in particular the mechanical structure. It is therefore not possible to specify a general value.