YASKAWA iQpump Micro CIMR-PW Series User Manual page 146

5.3 C: Tuning
C6-03/C6-04/C6-05: Carrier Frequency Upper Limit/Lower Limit/Proportional Gain
n
Use these parameters to set a user defined or a variable carrier frequency. To set the upper and lower limits, first set C6-02 to
"F".
No.
C6-03
C6-04
C6-05
Setting a Fixed User Defined Carrier Frequency
A carrier frequency between the fixed selectable values can be entered in parameter C6-03 when C6-02 is set to "F". In V/f
Control, parameter C6-04 must also be adjusted to the same value as C6-03.
Setting a Variable Carrier Frequency
In V/f Control, the carrier frequency can be set up to change linearly with the output frequency. In this case the upper and
lower limits for the carrier frequency and the carrier frequency proportional gain (C6-03, C6-04, C6-05) have to be set as
shown in Figure 5.29.
K is a coefficient determined by the value of C6-03:
• 10.0 kHz > C6-03 ≥ to 5.0 kHz: K = 2
• 5.0 kHz > C6-03: K = 1
• C6-03 ≥ 10.0 kHz: K = 3
Note: 1. A carrier frequency error (oPE11) will occur when the carrier frequency proportional gain is greater than 6 while C6-03 is less than
C6-04.
2. When C6-05 is set lower than 7, C6-04 is disabled and the carrier frequency will be fixed to the value set in C6-03.
146
Parameter Name
Carrier Frequency Upper Limit
Carrier Frequency Lower Limit
Carrier Frequency Proportional Gain
Carrier Frequency
C6-03
C6-04
Figure 5.29 Carrier Frequency Changes Relative to Output Frequency
Output
x C6-05 x K*
Frequency
Output Frequency
E1-04
Max Output Frequency
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Setting Range
1.0 to 15.0 kHz
1.0 to 15.0 kHz
0 to 99
Default
2.0 kHz
2.0 kHz
0