Veichi AC90 Manual page 84

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
F0.16 Rotate direction
0: Consistant The actual run dirction is the came as required. Not adjust the current direction.
1: Reverse The actual run dirction is reverse to requirement. Adjust the current direction.
2: Forbid reverse While it is set as forbid, the reverse order of all runn order channels (operation board, exterior
terminal, RS485 communication, optional card and program running) is invalid.
When frequency setting is negative (including that after combination), no matter what is [F0.07] LED "00" digit
(frequency control dirction), the actual output frequency is limited as 0.00Hz.
Note: While reset to factory set, this setting is not changed.
Attention: All reverse order is forbid. If give reverse order, the frequency inverter not run.
F0.17 Carrier frequency
It is used to set IGBT frequency, adjust electromagnetic noise, reduce leakage current. It is suitable for location need
mute when run in high carrier frequency, main parts loss heavy. Machine is heat heavy. Effect is reduced. And power
out small. Maintime, radio disturbance is heavy. And capacitance leak current more, if there is leak protection, maybe
there is mistake action or over current.
While run in low carrier frequency, the case will be totally different.The best carrier frequency comes with adjustment
base on actual case. The bigger the capacity, the smaller the carrier frequency should be.
We reserve the right of the biggest carrier frequency limitation.
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: while carrier frequency is higher than the factory set, the rated power reduce 5% if carrier frequency
add 1kHz.
Carrier PWM frequency
F0.18
characteristic selection
LED "0" digit:
0: Related to temperature
1: Not related to temperature
While temperature is too high, frequency inverter reduces carrier frequency automatic. Can reduce loss and avoid
frequent alarm for over heat.
LED "00" digit:
0: Related to frequency output
1: Not related to frequency output
While carrier frequency is related to frequency output, it can automatic adjust carrier frequency according to frequency
output. It can improve low frequency performance and high frequency mute effect.
LED "000" digit:
0: Fixed PWM Noise frequency is fixed.
1: Random PWM It can make humorous wave of output voltage distributes a wide range evenly to ruduce noise and
Setting range: 0-2
Setting range: 0.6-15.0kHz
noise
big
↓
small
Setting range: 0000-2111
79
Function Parameter specifications
Factory set: Accord model
disturbance Radiator temperature
Small
↓
big
Factory set: 0000
Factory set: 0
Small
↓
big