Siemens SINAMICS S120 Function Manual page 256

U/f control (vector control)
Several variations of the V/f characteristic exist, which are shown in the following table:
Table 5- 1 V/f characteristic (p1300)
Parameter Meaning
values
0 Linear
characteristic
1 Linear
characteristic with
flux current control
(FCC)
2 Parabolic
characteristic
254
Standard (without voltage boost)
Characteristic that compensates for voltage
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.
Characteristic that takes into account the
motor torque curve (e.g. fan/pump).
a) Quadratic characteristic (f
characteristic)
b) Energy saving because the low voltage
also results in small currents and drops.
Application / property
2
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions