Powtran PI8600 F Series User Manual page 62

Section V Parameter Function Table
inverter are great, the efficiency is decreased and the output capacity is reduced. At the same
time, more serious radio interference is resulted and special attention must be paid for application
where very low EMI is needed, and filter option can be used if necessary. Another problem for
application of high carrier frequency is the increase of capacitance-leakage current. The protector
for leakage current may invalidate function, and over current is also possibly caused.
When low carrier frequency is applied, the case is almost contrary to the above-mentioned
one.
Different motor has different reflection to the carrier frequency. The best carrier frequency is
gained after regulation according to actual conditions. The higher the motor capacity is, the lower
the carrier frequency should be selected.
The company reserves the right to limit maximum carrier frequency as following:
The relation between carrier frequency and Motor Noise, Electric disturbance, Switch
dissipation is expressed as following:
Carrier frequency
1.0KHz
8.0KHz
16.0KHz
The relationship of the carrier frequency and power :
Power(kw)
Carrier frequency (Hz)
Note: Carrier frequency is bigger, the temperatuer of the machine is higher.
Carrier frequency
F17
adjustment range
Carrier frequency
F18
adjustment mode
F17 Carrier frequency adjustment range
0.0~4.0kHz, Actual Carrier frequency adjustment range 1.0~16.0kHz
F18 Carrier frequency adjustment Mode
1 bit: Carrier frequency automatic adjustment mode
0: No automatic adjustment
Carrier frequency according F16 to set .
1: automatic adjustment Mode
The carrier frequency automatically adjusts the model 10 can select random mode and fixed
pattern.
10 bit: Stochastic adjustment mode
0: automatic adjustment, Fixed mode
Load current>80% Carrier frequency =F16-F17
Load current<60% Carrier frequency =F16+F17
Motor noise
Big
↕
Small
0.4-18.5 22-30
8.0K 7.0K
0.0~4.0
No automatic adjustment
1 bit
Automatic adjustment Mode
Automatic adjustment,Fixed
mode
10 bit
Automatic adjustment,
random mode
60
Electric disturbance
Small
↕
Big
37-55 75-110
4.0K 3.6K
kHz
0
1
0
1
Switch dissipation
Small
↕
Big
132-200 220above
3.0K 2.5K
0.0 Y
- 00 Y