Lenze EVF8212-EV020 - Optimisation of Control Modes; Optimisation of V;F Characteristic Control with Constant Vmin Boost

Commissioning
5-8 821XKlimaBA0399
5.4.2 Optimisation of control modes
5.4.2.1 Optimisation of V/f characteristic control with
constant V
min
boost
Codes required
Code Name
Possible settings
IMPORTANT
C
o
d
e
N
a
m
e
Lenze Selection Info
I
M
P
O
R
T
A
N
T
C015
V/f rated
frequency
50.00 7.50 {0.02Hz} 960.00 (Software 2x)
C016
V
min
setting
0.00 0.00 {0.02 %} 40.00 (Software 2x)
C021
Slip
compensation
0.0 -50.0 {0.1 %} 50.0
Setting sequence
1.If necessary, select V/f
characteristic (C014).
2.Select V/f-rated
frequency (C015).
- 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.
- 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
C015[Hz]

400V
V
reated motor
[V]
ô Rated motor frequency[Hz]
C014 = -2-
Linear characteristic
C014 = -3-
Square-law characteristic (e. g. for pumps,
fans)
K35.0066GB
out
rated m otor
V
V
1
V
min
0
0
1
C 015
f
d rated m otor
out
rated m otor
V
V
V
min
0
0
1
C 015
f
d rated m otor
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