Lenze E84AVSCx 8400 StateLine C - Manual (Page 26)

6 Commissioning
6.1 Drive behaviour by default (Lenze setting)
26
Lenze · 8400 StateLine · Operating instructions · from Firmware V06.00 · DMS 1.2 EN · 12/2012 · TD05
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
6 Commissioning
6.1 Drive behaviour by default (Lenze setting)
Preset motor control "V/f characteristic control (VFCplus)"
The 8400 StateLine controller supports various processes for motor control. By default, the V/f
characteristic control (VFCplus) with linear characteristic for asynchronous motors is preset in
C00006 as motor control.
The V/f characteristic control (VFCplus) is a motor control mode for standard frequency inverter
applications based on a simple and robust control process which is suitable for the operation of
asynchronous motors with linear or square-law load torque characteristic (e.g. fans). Furthermore,
this motor control mode is also suitable for group drives and special motors. Due to the low
parameterisation effort, commissioning of such applications is fast and easy.
[6-1] Principle of a linear V/f characteristic
The presettings of the parameters ensure that the controller is ready for operation right away and
the motors works adequately without further parameterisation if a controller and a 50 Hz
asynchronous machine with matching performances are assigned.

Tip!
More possible processes for motor control:
• Energy-saving V/f characteristic control (VFCplusEco)
• V/f control (VFCplus + encoder)
• Sensorless vector control (SLVC)
• Sensorless control for synchronous motors (SLPSM)
The motor voltage of the inverter is determined by
means of a linear characteristic depending on the field
frequency or motor speed to be generated. The voltage
follows a preselected characteristic.
0 1
0
100 %
N
n
n
U
min
U
out

Detailed information on the various processes can be found in the reference manual of
the 8400 StateLine in the "Motor control (MCTRL)" chapter.