Veichi AC100-T3-1R5G Manual page 87

AC100 HIGH-PERFORMANCE VC INVERTER MANUAL
terminal, RS485 communication, optional card and program running) are invalid.
When frequency setting is negative (including that after combination), no matter what the [F0.07] LED "00" digit is, the
actual output frequency is limited as 0.00Hz.
Note: When reset to factory default, this setting is not changed.
Attention: All reverse order is forbidden. If reverse order is give, the frequency inverter would not run.
F0.17 Carrier frequency
It is used to set IGBT frequency. Please set this parameter when adjusting electromagnetic noise and reducing leakage
current. This feature is mainly used to improve noise and vibration during operation of the inverter. At higher carrier
frequency of the current wave, the motor noise would be small. It is suitable for locations that need mute environment
when run in high carrier frequency, but at the same time the main parts switch loss and the heat are heavy while the
efficiency would be reduced. In the meantime, radio disturbance is heavy. And the other problem is that capacitance
leak current would increase, and if there is leak protection, there may be mistake action or over current. When run in
low carrier frequency, the case will be totally different. Different motors would have different carrier frequency responses.
The best carrier frequency comes with adjustment based on actual case. The bigger the capacity, the smaller the carrier
frequency should be.
The Company reserves the right to limit maximum carrier frequency.
Carrier frequency
low
↓
high
Note: We advice ratio of carrier frequency to max frequency not lower than 36. If work under low frequency
long time, we advice reduce carrier frequency to reduce the dead area time impact.
Attention: when carrier frequency is higher than the factory default, the rated power would reduce 5% every
time when carrier frequency adds 1 KHz.
F0.18 Carrier PWM frequency characteristic selection
LED "0" digit: carrier temperature associated settings
0: associated module temperature is invalid
1: associated module temperature is valid
When module temperature is too high, the frequency inverter reduces carrier frequency automatically, which can reduce
switch loss and avoid frequent alarm for over heat.
LED "00" digit: associated settings of carrier output frequency
0: associated frequency output temperature is invalid
1: associated frequency output temperature is valid
When carrier frequency is related to frequency output, it can automatic adjust carrier frequency according to frequency
output, which can improve the low frequency performance and high frequency mute effect.
LED "000" digit: random PWM switch
0: Fixed carrier: Noise frequency is fixed.
1: Random carrier: This mode allows the inverter output voltage harmonic spectrum evenly distributes over a wide
frequency range, which can effectively suppress electrical noise and mechanical vibration.
LED "0000": over modulation mode
0: close: close the PWM
1: start: start the PWM
Setting range: 0.6-15.0kHz
Motor noise Electric disturbance
big
↓
small
84
FUNCTION PARAMETER SPECIFICATION
Factory default: Accord model
Radiator temperature
Small
↓
big
Setting range: 0000-3111
low
↓
high
Factory default: 0010