Commissioning
Optimising the operating behaviour
Motor magnetising current with vector control
6
6.11
6.11.4
6.11-12
EDSVF9333V EN 3.0-06/2005
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, t he 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.
–WhenC0080=0thePcontrollerisdeactivated.Nosetpointis
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 f requency
corresponds to the rated motor frequency in C0089.
WhenC1583=0%theadaptationisdeactivated.Nosetpointisselectedforthe
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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