6 v/f control (vfcplus + encoder), 1 parameterisation dialog/signal flow, V/f control (vfcplus + encoder) – Lenze 8400 User Manual
Page 176: Parameterisation dialog/signal flow, 5motor control (mctrl)
5
Motor control (MCTRL)
5.6
V/f control (VFCplus + encoder)
176
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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5.6
V/f control (VFCplus + encoder)
The V/f characteristic control (VFCplus) described above can be operated with a speed feedback.
This has the following advantages:
• Steady-state accuracy of the speed
• Less parameterisation effort compared to the sensorless vector control (SLVC)
• Improved dynamics compared to V/f characteristic control without feedback or to sensorless
vector control (SLVC).
• Suitability for group drives
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 protec HighLine controller.
2. Select the Application parameters tab from the Workspace.
3. Select the motor control from the Overview dialog level in the Motor control (
) list
field:
• "7: VFCplus: V/f linear +encoder" for linear characteristic or
• "9: VFCplus: V/f quadr +encoder" for quadratic 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.
The descriptions in chapter "
V/f characteristic control (VFCplus)
" also apply to the V/f
Note!
• Make sure that, when the motor control with speed feedback is in use, the maximum
input frequency of 100 kHz is not exceeded.
Using DI1(5) and DI2(6) as frequency
• As the slip is calculated in the feedback V/f operation and injected through the slip
regulator, the slip compensation (
) is deactivated with V/f control.