1 motor power factor, 5motor interface – Lenze 9400 User Manual
Page 167
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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5
Motor interface
5.5
Sensorless vector control (SLVC)
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5.5.2.1
Motor power factor
Together with the rated motor current, the motor power factor (
) defines the motor
magnetising current (
) and thus the current consumption of the controller in idle state.
For the adjustment of the motor power factor, first the motor current in idle state at rated speed is
determined in the control type "V/f control". Afterwards the motor power factor is set in the control
type "Sensorless vector control" so that the motor magnetising current corresponds to the
previously determined no-load current.
How to adjust the motor power factor:
1. If the controller is enabled, inhibit the controller, e. g. with the device command
= "41: Inhibit controller".
2. Select the control type VFCplus: V/f control" in
3. Select setpoint speed 0 rpm
4. Enable controller.
5. Slowly increase setpoint speed to rated speed (no field weakening) and then keep it at rated
speed constantly.
6. Take down the motor current displayed in
7. Slowly reduce the setpoint speed to 0 rpm again.
8. Inhibit controller.
9. Go to
and select the "SLVC: Sensorless vector control" again.
to 100 %.
11. Set the motor power factor (
) so that the following applies:
motor magnetising current (
) ≈ motor current taken down before.
12. Save parameter set (
= "11: Save start parameters").
Note!
The following adjustment of the motor power factor should be executed after the motor
parameters have been determined and when the value set in
deviates more
than 10 % from the data on the motor nameplate.
If the setting of the motor power factor in
is changed, the setting of the mutual
motor inductance also changes in