Motor Control Parameters - Lenze E84AVSC Operating Instructions Manual

8400 StateLine C | Operating instructions
Commissioning
Adapting the most important parameters to the drive task
6.3.3

Motor control parameters

Parameter
C00006
C00018
C00021
C00019
C00036
C00106
C00910/1
C00910/2
C00006
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)
42
Name
Motor control
Switching frequency
Slip compensation
Auto-DCB: Threshold
DC braking: Current
Auto-DCB: Hold time
Max. pos. output frequency
Max. neg. output frequency
6 VFCplus: V/f linear
8 VFCplus: V/f quadr
10 VFCplus: V/f definable
11 VFCplusEco: V/f energy-saving
L
Lenze setting
6: "VFCplus:V /f linear"
2: "8 kHz var./drive-opt."
2.67 %
3 rpm DCB = DC-injection braking
50.00 %
0.500 s
1000 Hz
1000 Hz
Info
Linear V/f characteristic
• For drives a constant, speed-independent load torque.
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.
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.
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.
from Firmware V06.00 - DMS 1.1 EN - 11/2011