KEB COMBIVERT F4-C Manuel D'instruction page 33

2.5 Basic Adjustment
of the Drive
Rated frequency
Boost
Acceleration time
The following parameters determine the fundamental operating data of
the drive. They should be checked and/or adapted to the application.
With the adjusted frequency here the inverter reaches a maximal output
voltage. The adjustment of the motor rated frequency is typical here.
Note: Motors can overheat when the rated frequency is incorrectly
adjusted!
Adjustment range:
Resolution:
Factory setting:
Customer adjustment: _______ Hz
In the lower speed range a large part of the motor voltage decreases on
the stator resistance. In order that the breakdown torque of the motor
remains almost constant in the entire speed range, the voltage decrease
can be compensated by the boost.
Adjustment range:
Resolution:
Factory setting:
Customer adjustment: _______ %
Adjustment: - Determine the rate of utilzation in no-load operation during
rated frequency
- Preset about 10 Hz and adjust the boost, so that about the
same rate of utilization is reached as with the rated frequency.
When the motor, during continuous operation, drives with low
speed and too high voltage it can lead to an overheating of the
motor.
The parameter determines the time needed, in order to accelerate from
0 to 100 Hz. The actual acceleration time is proportional to the frequency
change.
delta f
x CP. 7 = actual acceleration time
100 Hz
Adjustment range:
Resolution:
Factory setting:
Customer adjustment: _______ s
Example: CP. 7 = 10 s ; the drive should accelerate from 10 Hz to 60 Hz
delta f = 60 Hz - 10 Hz = 50 Hz
actual acceleration time = (50 Hz / 100 Hz) x 10s = 5 s
Operation of the Unit
U
0...409.58 Hz
0.0125 Hz 100%
50.0 Hz
U
0...25.5 %
0.1 %
2.0 %
CP. 6
0.01...300 s
0.01 s
10 s
A
f
CP. 5
A
f
CP. 5
f
100 Hz
CP. 7
33
GB
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