V/f control (vector control)
Drive functions
298 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Several variations of the V/f characteristic exist, which are shown in the following table:
Table 6- 1 V/f characteristic (p1300)
0 Linear characteristic Standard (without voltage boost)
1 Linear characteristic
with flux current con-
trol (FCC)
Characteristic that compensates for volt-
age losses in the stator resistance for
static/dynamic loads (flux current control
FCC).
This is particularly useful for small motors,
since they have a relatively high stator
resistance.
2 Parabolic characteris-
tic
Characteristic that takes into account the
motor torque curve (e.g. fan/pump).
• Quadratic characteristic (f
2
character-
istic)
• Energy saving because the low volt-
age also results in small currents and
losses
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