Lenze 8240 frequency inverters - Manual (Page 38)

Commissioning
5-6 UOOu_^MTMO
L
5.4 Optimize the operating characteristic of the drive
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5.4.1 Select the control mode
Code Name Possible settings IMPORTANT
Lenze Selection Info
C014 ¿ Operating mode -4- -2- Linear characteristic V~f
d
with
constant V
min
boost
-3- Square characteristic V~f
d
2 with
constant V
min
boost
-4- Motor-current control
Control modes
of the voltage
characteristic
Function
D
Under C014 you can set the control mode and the voltage characteristic.
D
The motor-current control enables a ”Sensorless Speed Control”. Compared with the V/f
characteristic control, the drive can operate with a considerable higher torque and consumes less
current during idle running.
C014 = -2-
Linear characteristic
C014 = -3-
Square-law characteristic (e. g. for pumps, fans)
100%
0
0 1
V
min
0
0 1
f
d
f
dN
V
min
V
out
100%
V
out
f
d
f
dN
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