CHV180 series frequency inverter special for elevator Detailed function description
.34.
Carrier frequency
Model
Factory
Setting( kHz )
4kW~11kW
8
15kW~30kW
4
The advantage of high carrier frequency: ideal current waveform, little current
harmonic wave and motor noise.
The disadvantage of high carrier frequency: increasing the switch loss, increasing
inverter temperature and the impact to the output capacity. The inverter needs to
derate on high carrier frequency. At the same time, the leakage and electrical magnetic
interference will increase.
Applying low carrier frequency is contrary to the above, too low carrier frequency will
cause unstable running, torque decreasing and surge.
The manufacturer has set a reasonable carrier frequency when the inverter is in
factory. In general, users do not need to change the parameter.
When the frequency used exceeds the default carrier frequency, the inverter needs to
derate 20% for each additional 1k carrier frequency
.
Function
Code
Name
Description
Setting
Range
Factory
Setting
P0.08
Motor
parameters
autotuning
0: No action
1: Rotation autotuning
2: Static autotuning
0~2
0
0: No action, forbid autotuning.
1: Rotation autotuning:
Do not connect any load to the motor when performing autotuning and ensure the motor
is in static state.
Input the nameplate parameters of motor (P2.04~P2.08) correctly before performing
autotuning. Otherwise the parameters detected by autotuning will be incorrect; it may
influence the performance of inverter.
The operation process is as follow:
a. Set P0.08 to be 1 then press the DATA/ENT, LED will display “-TUN-” and flickers.
During “-TUN-” is flickering, press the PRG/ESC to exit autotuning.
b. Press the RUN to start the autotuning. LED will display “TUN-0”.
c. After a few seconds the motor will start to run. LED will display “TUN-1” and
“RUN/TUNE” light will flicker.
d. After a few minutes, LED will display “-END-”. That means the autotuning is finished
