Optimising the operating behaviour
Motor magnetising current with vector control
6.11
6.11.4
6.11−12
EDSVF9383V EN 7.1−04/2012
Optimisation
3. If required, select a setpoint for the motor magnetising current in
C0095.
– The value in the Lenze setting has been evaluated by the controller
from the entered motor data of the motor nameplate.
4. The influence, the setpoint of the motor magnetising current is to
have, can be set in C0080.
– A P controller which increases or reduces the setpoint can be
parameterised via C0080.
– Increase the value in C0080 step by step and observe the effect on
the current injection with an oscilloscope, if required.
– When C0080 = 0 the P controller is deactivated. No setpoint is
selected for the motor magnetising current.
5. Set the adaptation of the setpoint for the motor magnetising current in
C1583.
100 %
0
0
0.5 f
out
f
out
0
9300vec140
Fig. 6.11−4 Adaptation of the setpoint for the motor magnetising current
Adaptation of the setpoint
Characteristic when C1583 = 100 % (Lenze setting). The output
frequency corresponds to half the rated motor frequency in C0089.
Characteristic when C1583 = 199.99 %. The output frequency
corresponds to the rated motor frequency in C0089.
When C1583 = 0 % the adaptation is deactivated. No setpoint is selected for the
motor magnetising current.
Select the output frequency in C1583, up to which the setpoint of the
motor magnetising current is to have an effect.
– At an output frequency of 0 Hz the setpoint has the influence defined
in C0080 and is 100 percent efficient. An increasing output frequency
reduces the influence linearly to 0.
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