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C6 Carrier Frequency
C6-01 Normal Duty Selection
■
Setting
1
Normal Duty 1
2
Normal Duty 2 (factory default)
Adjustment of parameter C6-01 will affect the Drive's overload and carrier frequency settings. Generally this parameter does not need
adjustment and should be left at the factory default setting.
C6-02 Carrier Frequency Selection
■
Setting
0
Low Noise
1
Fc=2.0 kHz
2
Fc=5.0 kHz
3
Fc=8.0 kHz
4
Fc=10.0 kHz
F
Program
*The factory default setting is model dependent
Parameter C6-02 sets the switching frequency of the Drive's output transistors. It can be changed in order to reduce audible noise and
also reduce leakage current. Cases that may require adjustment to the C6-02 are:
• If the wiring length between the iQpump drive and the motor is long, decrease the carrier frequency
Wiring Length
C6-02 (carrier frequency) setting
• If speed and torque are inconsistent at low speeds, decrease the carrier frequency
• If leakage current from the iQpump drive is large, decrease the carrier frequency
• If the audible motor noise is too great, increase the carrier frequency (may require iQpump drive current derating)
When parameter C6-02 is set to "0: Low Noise" the iQpump drive uses a carrier frequency of 2 kHz and reduces the motor audible noise
by approximately 5 db. over the conventional 2 kHz setting (C6-02 = 1). The iQpump drive modulates the nominal PWM pattern to
achieve the lower noise. This setting is normally used with high starting torque loads that are frequently started and stopped or,
applications where leakage current needs to be minimized and motor audible noise is important.
Table 2 Carrier Frequency Parameter Factory Defaults (C6-01=2: Normal Duty 2)
208 V – 240 V Drives 1
C6-02
C6-03
Model
Carrier
Carrier
CIMR-P7
Frequency
Frequency
(kHz)
Max. (kHz)
20P4
4 (10.0)
4 (10.0)
20P7
4 (10.0)
4 (10.0)
21P5
4 (10.0)
4 (10.0)
22P2
3 (8.0)
3 (8.0)
23P7
4 (10.0)
4 (10.0)
25P5
6 (15.0)
6 (15.0)
27P5
6 (15.0)
6 (15.0)
2011
3 (8.0)
3 (8.0)
2015
4 (10.0)
4 (10.0)
2018
4 (10.0)
4 (10.0)
2022
4 (10.0)
4 (10.0)
2030
4 (10.0)
4 (10.0)
2037
2 (5.0)
2 (5.0)
2045
2 (5.0)
2 (5.0)
2055
3 (8.0)
3 (8.0)
2075
1 (2.0)
1 (2.0)
34
C6-04
C6-05
Carrier
Carrier
Nominal
Frequency
Frequency
HP
Min. (kHz)
Gain
4 (10.0)
0
0.5/0.75
4 (10.0)
0
4 (10.0)
0
1.5/2
3 (8.0)
0
4 (10.0)
0
6 (15.0)
0
6 (15.0)
0
3 (8.0)
0
4 (10.0)
0
4 (10.0)
0
4 (10.0)
0
4 (10.0)
0
2 (5.0)
0
2 (5.0)
0
3 (8.0)
0
1 (2.0)
0
75/100
Description
Description
328 ft or less
1 to 4 (10 kHz max.)
C6-02
Model
Carrier
CIMR-P7
Frequency
(kHz)
40P4
6 (15.0)
1
40P7
6 (15.0)
41P5
6 (15.0)
3
42P2
6 (15.0)
5
43P7
6 (15.0)
7.5
45P5
6 (15.0)
10
47P5/49P0
6 (15.0)
15
4011
3 (8.0)
20
4015
4 (10.0)
25
4018/4024
4 (10.0)
30
4030
3 (8.0)
40
4037
3 (8.0)
50
4045
3 (8.0)
60
4055
2 (5.0)
75
4075
2 (5.0)
4090
3 (8.0)
Over 328 ft
1 to 2 (5 kHz max.)
480 V Drives 1
C6-03
C6-04
C6-05
Carrier
Carrier
Carrier
Frequency
Frequency
Frequency
Max. (kHz)
Min. (kHz)
Gain
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
6 (15.0)
3 (8.0)
3 (8.0)
4 (10.0)
4 (10.0)
4 (10.0)
4 (10.0)
3 (8.0)
3 (8.0)
3 (8.0)
3 (8.0)
3 (8.0)
3 (8.0)
2 (5.0)
2 (5.0)
2 (5.0)
2 (5.0)
3 (8.0)
3 (8.0)
YASKAWA TM.iQp.02 iQpump Drive Programming Manual
Nominal
HP
0
0.5/0.75
0
1
0
1.5/2
0
3
0
5
0
7.5
0
10/15
0
15/20
0
25
0
30/40
0
40/50
0
60
0
75
0
100
0
125
0
150
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