KEB COMBIVERT F5 User Manual

156
Ld.25
Vmax
regulation
Sets the output voltage level as a percentage of the available with 100% equal to
the maximum available. The drive will attempt to regulate the output voltage from
going above this value by reducing the magnetizing current of induction motors
or de- uxing for PM motors. The nominal value is 97% which will regulate the
voltage to just under 100%.
Current control proportional gain. Calculated from the motor data.
Current control integral gain. Calculated from the motor data.
The acceleration torque is used to calculate the system inertia. By entering a torque
value in this parameter, the corresponding inertia is calculated from the mechanical
data in LF.20...LF23 and the acceleration rate adjusted in 2.LF.51. The resulting
inertia value is loaded into Ld.30 and the feed forward torque control turned on.
The total system inertia, motor and load in kgm
2
for gearless and kgcm
2
for
geared applications. The torque value is determined by using the I Lrn function
in parameter LF.3. The value is the acceleration torque minus the torque while
running at contract speed. The I Lrn function will automatically bring you to this
parameter to enter the torque value.
This is the system inertia in kgm
2
as calculated through parameter Ld.29 or via
measurements made via PC software. When this value is not equal to zero and
the gain value in Ld.32 is also not equal to zero the FFTC function is active.
Feed forward torque control  lter. Provides a  lter on the output of the FFTC. For
digital speed or position control a value of 8 mSec is recommended. For analog
control a value of 16 mSec is recommended.
Unit: -
Value range: off, 4, 8, 6, 32, 64, 128, 256, 512, 1024 mSec
Default: 0; 0ff
Determines the relative gain of the feed forward torque command. 100% = unity
command. A value of 90% is recommend. Higher values strengthen the response,
lower values weaken the response. It may be necessary when using FFTC to
lower the value of LF.32 and LF.33.
Provides a PT1  lter on the torque command signal before it is feed into the current
control.
Unit: -
Value range: off, 4, 8, 6, 32, 64, 128, 256, 512, 1024, 2048 mSec
Default: 1; 0.5ms
Ld.27
KP current
Ld.28
KI current
Ld.30
System inertia
Ld.31
FFTC  lter
Ld.32
FFTC gain
Ld.33
Torque
command  lter
Ld.29
Acceleration
torque
Advanced Drive Data

KEB COMBIVERT F5 Specifications

General

Brand	KEB
Model	COMBIVERT F5
Category	DC Drives
Language	English