Basic Adjustment Of The Drive - KEB COMBIVERT M4 Instruction Manual

5.5
Rated frequency
Boost
Acceleration time

Basic Adjustment of the Drive

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 the inverter reaches a maximal output voltage. The
adjustment of the rated motor frequency is typical here. Note: Motors can
overheat when the rated frequency is incorrectly adjusted!
Adjustment range:
Resolution:
Factory setting:
Customer adjustment:
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, runs 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:
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
Operating of the unit
U
A
0...409.58 Hz
100%
0.0125 Hz
50.0 Hz
_______ Hz
U
A
0...25.5 %
0.1 %
2.0 %
CP. 6
_______ %
0.01...300 s
0.01 s
10 s
_______ s
f
CP. 5
f
CP. 5
f
100 Hz
t
CP. 7
GB - 25