Commissioning
UOMu_^MVMO 5-13
5.4.1.2 Optimisation of V/f-characteristic control
Codes required
Code Name
Possible settings
IMPORTANT
Lenze Selection Info
C015
V/f-rated
frequency
50.0 30.0 {0.1Hz} 960.0
C016
V
min
setting * 0{1%}40 * type dependent
C021
Slip
compensation
0 0{1%}12
Setting sequence
1.If necessary, select V/f
characteristic (C014).
2.Select V/f-rated
frequency (C015).
D The V/f-rated frequency determines the slope of the V/f characteristic and has
considerable influence on the current, torque and power performance of the motor.
D An internal mains voltage compensation compensates deviations in the mains
during operation. They therefore do not have to be considered for the setting of
C015.
Adjustment
Calculate the frequency to be set under C015
`MNRxeòz =
OPMs
s
ê~íÉÇ ãçíçê
xsz
⋅ ê~íÉÇ ãçíçê ÑêÉèìÉåÅó xeòz
C014 = -2-
Linear characteristic
C014 = -3-
Square-law characteristic (e. g. for pumps, fans)
hPRKMMSR
1 0 0 %
0
0 1
f
d
f
d N
V
m i n
0
0
1
f
d
f
d
V
m i n
V o u t
1 0 0 %
V o u t
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