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uF - Parameter
41
ANTRIEBSTECHNIK
The value of the dc-bus voltage can change during operation, caused by fluctuations of
the mains voltage and load variations. Since the output voltage of the inverter is
directly dependent on the dc-bus voltage,
output voltage = modulation depth (%) * DC-voltage /
√
2
these changes of the dc-bus voltage cause changes in the inverter output voltage.
When DC-voltage compensation is switched on the fluctuations of the output voltage,
which are produced by the change in the dc-bus voltage, are compensat-ed. Meaning,
100% output voltage corresponds to the set voltage in uF. 8, maximum 1.05 * DC-
voltage /
√
2. With this it is also possible to fit the inverter onto a motor with smaller
rated voltage. By entering the value 650V (oFF) the DC-voltage compensation is
switched off.
For some users (trafo) it is necassary to increase the minimum output frequency of the
inverter (standard 0Hz). If a frequency > 0Hz is set in uF.9, then all output frequencies
< uF. 9 are suppressed and the modulation is switched off. The acceleration and
deceleration ramps start and/or end with this frequency. Hysteresis is not used to
switch off/on modulation during overtravel and/or underpassing of uF. 9. Make sure
that the setpoint is not in the range of uF. 9 with the analog frequency reference
setting.
The carrier frequency can be adjusted in grades of 1kHz to 16kHz
(dependent on the power circuit).
DC-Voltage
Compensation
(uF. 8)
Minimum Frequency
for Modulation
(uF. 9)
Carrier Frequency
(uF.11)
Содержание COMBIVERT F4-S/1.2
Страница 1: ...C O M B I V E R T APPLICATION MANUAL Control unit F4 S 1 2 ANTRIEBSTECHNIK 00 F4 SEA K120 07 99 ...
Страница 2: ......
Страница 24: ...ru Parameter 24 ...
Страница 42: ...uF Parameter 42 ...
Страница 54: ...Fr Parameter 54 ...
Страница 58: ...An Parameter 58 ...
Страница 64: ...di Parameter 64 ...
Страница 76: ...In Parameter 76 ...
Страница 94: ......
Страница 95: ...ANTRIEBSTECHNIK ...