8400 StateLine C | Operating instructions
Commissioning
Adapting the most important parameters to the drive task
42 L from Firmware V06.00 - DMS 1.1 EN - 11/2011
6.3.3 Motor control parameters
C00006
Parameter Name Lenze setting
Motor control
C00006 Motor control 6: "VFCplus:V /f linear"
C00018 Switching frequency 2: "8 kHz var./drive-opt."
C00021 Slip compensation 2.67 %
C00019 Auto-DCB: Threshold 3 rpm DCB = DC-injection braking
C00036 DC braking: Current 50.00 %
C00106 Auto-DCB: Hold time 0.500 s
C00910/1 Max. pos. output frequency 1000 Hz
C00910/2 Max. neg. output frequency 1000 Hz
Motor control
Selection of the motor control mode
• In the following, all options for V/f characteristic control (VFCplus) are shown.
• The V/f characteristic shape is defined by selecting the corresponding motor control mode.
• A detailed description of this and other motor control types not mentioned here (e.g. vector control) can be found
in the software manual and in the »Engineer« online help for the controller.
Selection list (Lenze setting printed in bold) Info
6 VFCplus: V/f linear Linear V/f characteristic
• For drives a constant, speed-independent load torque.
8 VFCplus: V/f quadr Square-law V/f characteristic
• For drives with a load torque curve which is quadratic
or in relation to speed. Quadratic V/f characteristics
are preferred in the case of centrifugal pumps and fan
drives.
10 VFCplus: V/f definable User-definable V/f characteristic
• For drives that require adaptation of the magnetising
current by means of the output speed. The freely
definable V/f characteristic can be used e.g. for
operation in conjunction with special machines such
as reluctance motors in order to suppress oscillations
at the machine or to optimise energy consumption.
11 VFCplusEco: V/f energy-saving Linear V/f characteristic with voltage reduction
•For drives which often work in partial load operation,
the energy-saving V/f characteristic control
(VFCplusEco) offers the opportunity to reduce the
voltage at low load in order to save energy. At higher
loads, the voltage reduction is cancelled and a linear
characteristic is caused.
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