HNC Electric HV480 Series, Руководство пользователя

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F0 - 20 lower limit frequency 0.00 Hz ~ upper limit frequency [ 0.00 Hz ]
F0 - 21 operating formula for setting frequency lower
than lower limit frequency 0
～
2 [0]
When the frequency command is lower than the lower limit frequency set by F0 - 20, the frequency inverter can
be stopped, run at the lower limit frequency, or run at zero speed. Which operating mode can be set by F0 - 21
(operating mode with the set frequency lower than the lower limit frequency).
F0 - 22 carrier frequency 0.5 kHz ~ 16 kHz [model determination]
This function adjusts the carrier frequency of the frequency inverter. By adjusting the carrier frequency, the noise
of the motor can be reduced, the resonance point of the mechanical system can be avoided, the line current to the
floor drain can be reduced, and the interference generated by the frequency inverter can be reduced.
When the carrier frequency is low, the higher harmonic component of the output current increases and the motor
loss increases, and the temperature rise of the motor increases.
When the carrier frequency is high, the motor loss decreases and the temperature rise of the motor decreases,
but the frequency inverter loss increases and the frequency inverter temperature increases.
The rise increases and the interference increases. Adjusting the carrier frequency will affect the following
performance:
Carrier frequency Low → high
Motor noise Big → small
Output current waveform Poor → good
Motor temperature rise High → low
Temperature rise of frequency
inverter
Low → high
Leakage current Small → big
External radiation interference Small → big
The factory setting of carrier frequency is different for frequency inverters with different power. Although users
can modify it according to their needs, and they need to pay attention: if the carrier frequency setting is higher than
the factory value, and the temperature rise of the frequency inverter radiator will increase. At this time, users need to
use the frequency inverter by derating; otherwise the frequency inverter is in danger of overheating alarm.
F0 - 23 carrier frequencies adjusts with load size 0
～
1 [1]
The carrier frequency is adjusted with the load, which means that when the frequency inverter detects that the
load exceeds the rated level, and it will automatically reduce the carrier frequency so as to reduce the temperature
rise of the frequency inverter.
When the load decreases to a certain extent, the carrier frequency gradually returns to the set value. This
function can reduce the chance of over-heating alarm of frequency inverter.
F0 - 24 LED shutdown operation display selection 0
～
1 [0]
0: shutdown operation display is separated.
During operation, the LED display content is set by F0 - 37 / F0 - 38.
When shutting down, the LED display content is set by F0 - 39.
1: stop operation display does not separate