KEB COMBIVERT F5 MULTI User Manual

6 5
KEB COMBIVERT F5
6
Name: Basis
04.05.04
Chapter Section Page Date
© KEB Antriebstechnik, 2002
All rights reserved
Functional Description U/f-Characteristic Adjustment
Fig. 6.5.5.c Example: Deceleration of a centrifugal-load drive from 80Hz
with voltage stabilization without voltage stabilization
Load
Motor voltage
Actual frequency
DC-link voltage
Load
Motor voltage
Actual frequency
DC-link voltage
6.5.6 Maximal voltage
mode (uF.10)
By changing the maximal voltage mode more torque can be releasedfree above the
rated frequency through overmodulation (110% voltage). Raising the U/f-characteristic
has an influence at activated energy saving function or at voltage stabilization.
uF.10 Modulation Description
0 100 % U/f / 100% voltage without overmodulation; all limitations 100% of
modulation factor
1 110 % U/f / 110% voltage with overmodulation; all limitations 110% of
modulation factor
2 200 % U/f / 100% voltage limitations between voltage-forming functions
200%; limitation before modulator 100% of
modulation factor
3 200 % U/f / 110% voltage limitations between voltage-forming functions
200%; limitation before modulator 110% of
modulation factor
6.5.7 Switching
Frequency (uF.11)
The switching frequency with which the power modules are clocked, can be changed
depending on the application. The maximal possible switching frequency as well as
the factory setting are determined by the employed power circuit.
uF.11Switching frequency
Combivis Display/Plaintext Frequency
0 2 2 kHz
1 4 4 kHz
2 8 8 kHz
3 12 12 kHz
4 16 16 kHz
The current switching frequency is indicated in the parameter ru.45, the max. switching
frequency in In.3 and the switching carrier frequency in In.4.
At switching frequencies
above 4 kHz absolutely
consider the max. motor line
length specified in chapter
2.1.6 and 2.1.7.

KEB COMBIVERT F5 MULTI Specifications

General

Brand	KEB
Model	COMBIVERT F5 MULTI
Category	DC Drives
Language	English