V/F Control (Vfcplus + Encoder); Parameterisation Dialog/Signal Flow - Lenze L-force HighLine C 8400 Series Reference Manual

5.6

V/f control (VFCplus + encoder)

The previously described V/f characteristic control (VFCplus) can be operated with a
feedback of speed. This bears the following advantages:
 Stationary accuracy of speed
 Low parameterisation effort compared to sensorless vector control (SLVC)
 Improved dynamics compared to V/f characteristic control without feedback or to
sensorless vector control (SLVC).
 Suitability for group drives

The descriptions in chapter
the V/f control.

Note!
• Ensure that the maximum input frequency of 100 kHz is not exceeded during
execution of the motor control function with speed feedback.
and DI2(7) as frequency inputs
• As the slip is calculated in the feedback V/f operation and injected through
the slip regulator, the slip compensation (C00021) is deactivated with V/f
control.
5.6.1

Parameterisation dialog/signal flow


Proceed as follows to open the dialog for parameterising the motor control:
1. »Engineer« Go to the Project view and select the 8400 HighLine controller.
2. Go to Workspace and change to the Application parameters tab.
3. Select the motor control from the Overview dialog level in the Motor control
(C00006) list field:
• "7: VFCplus: V/f linear +encoder" for linear characteristic or
• "9: VFCplus: V/f quadr +encoder" for square-law characteristic
4. Click the Motor control V/f encoder button to change to the Overview  Motor
control V/f dialog box.
• This dialog level only shows a simplified signal flow with the most important
parameters.
• When you click the >>More details button in the left-most position, a signal
flow with more details/parameters is displayed, as shown in the following
subchapter.
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8400 HighLine C | Reference manual
"V/f characteristic control
( 150)
( 314)
L
Motor control (MCTRL)
V/f control (VFCplus + encoder)
(VFCplus)" also apply for
Using DI1(6)
179