Vicruns VD120 Series, Manual

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Parameter Description VD120 Series Inverter User Manual
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138
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A0-18
Rotational Inertia
Compensation Upper
Limit
0.0%~50.0% 5.0%
○
A0-19
Rotational Inertia
Compensation Starting
Frequency
0.00Hz~max frequency 10.00Hz
○
A0-20
Lowest Resolution
Frequency (only effective
to SVC)
0.00: Not limit
0.01Hz~2.00Hz
1.00Hz
○
The related parameters of the rotational inertia, generally do not need to adjuste.
A0-21
Disconnection Detection
Time
0.0: Disconnection is invalid
0.1~60.0s
0.0
○
Disconnection detection time is set to zero, the line detection function is effective, when the actual
output frequency reaches (upper limit frequency -0.5Hz), the duration exceeds the set break
detection time, reported Err.22 (disconnection detection fault).
AI Optimize Control Parameter Group
A1-00 Carrier Frequency 0.5kHz~16.0kHz
Model
dependent
○
This function is used to adjust the carrier frequency of the inverter. By adjusting the carrier frequency
can reduce motor noise and avoid the resonance point of mechanical system, reduce the line of floor
drain current and reducing interference caused by frequency inverter.
When the carrier frequency is low, the output current harmonic component increases, motor loss
increases, the temperature rise of the motor increases.
When the carrier frequency is high, the motor loss is decreases, the motor temperature decreases,
but the inverter loss increases, the inverter temperature rise, and the interference increases.
Adjusting the carrier frequency will affect the following performance.
Carrier frequency Low → High
Motor noise Big → Small
Output current waveform Bad → Good
Motor s temperature rising High → Low
Inverter temperature rising Low → High
Leakage current Small → Big
External radiated interference Small → Big
Different power inverter, the factory settings of carrier frequency are different. Although the user can
modify according to the need, but need to pay attention: if the carrier frequency is higher than the
factory value, will lead to frequency inverter radiator temperature rise, at this time the user needs to
use the frequency converter derating, otherwise the inverter has the risk of overheating alarm.
A1-01
Carrier Frequency
Adjustment with the
Temperature
0: No
1: Yes
1
○
Carrier frequency adjustment with the temperature, is refers to the frequency inverter is detected its
radiator at high temperature, reduce the carrier frequency automatically, in order to reduce the
frequency inverter temperature rise. When the radiator at low temperature, carrier frequency is