NO.6 Detailed Function Description
33
P033
Setting range
Unit
Ex-factory value
Alteration
Frequency tracking current
level
0-200%
1%
150
╳
When inverter is executing frequency tracking, output current shall take this set value as
level. When output current is larger than this level, the frequency will drop and make current
below current level, and then re-execute the frequency tracking.
P034
Setting range
Unit
Ex-factory value
Alteration
Voltage rising time during
frequency tracking
0.1-10.0s
0.1s
0.5
○
When startup mode of inverter is set as frequency tracking, there is a voltage rising process.
When the voltage rising is too fast, the current will be very large and the tracking process will
be fast. If the voltage rising is slow, the current will be small and tracking will also be slow.
The general setting mode is that for machinery with small power, P034 shall be set as a small
value while for machinery with large power, P034 as a slightly larger value.
P035-P040
Reserve
P041
Setting range
Unit
Ex-factory value
Alteration
Carrier frequency
0-15
1
*
╳
[Note] 0-15 is corresponding to 0-20K Hz
Carrier frequency is related to electromagnetic noise of motor as well as to inverter's heat
productivity and disturbance to environment. Refer to the following table:
Carrier frequency
Electromagnetic
noise
Heat productivity
Disturbance to
environment
Small
Large
Large
Small
Small
Large
Small
Large
Carrier Mapping Table
Setting
value
0
1
2
3
4
5
6 7 8 9
10
11
12
13
14
15
Carrier
frequency
KHz
0.7 1 1.5 2
3
4
5 7 8 9
10
11
13
15
17
20
The higher the carrier frequency is, the smaller the motor's electromagnetic noise will be, but
the disturbance to other systems will be stronger and the heat productivity of inverter will be
larger. When the ambient temperature is relatively high and the motor load is relatively heavy,
we can appropriately reduce the carrier frequency to improve the heat characteristics of
inverter. The ex-factory value of carrier frequency is set as per model.
