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Carrier Frequency: C6
User parameters for the carrier frequency are shown in the following table.
Param-
eter
Num-
ber
CT/VT
selection
C6-01
Heavy/
Normal
Duty
Carrier
frequency
selection
C6-02
Carrier-
Freq Sel
Carrier
frequency
upper
C6-03
limit
*3
Carrier
Freq Max
Carrier
frequency
lower
C6-04
limit
*3
Carrier-
Freq Min
Carrier
frequency
propor-
C6-05
tional gain
*3
Carrier-
Freq Gain
* 1. Only 1(VT) can be set for 200 V Class 110 kW as well as 400 V Class 220 kW and 300 kW Inverters.
* 2. The factory settings depend on the capacity of the Inverter. The values for a 200 V Class Inverter of 0.4 kW are given.
* 3. This parameter can be monitored or set only when F is set for C6-02.
-26
5
Name
Description
Display
0: CT (low carrier, parameter
torque, 150% per minute)
1: VT (high carrier, variable
torque, 120% per minute)
Select carrier wave fixed pattern.
0: Low-noise PWM
1: 2.0 kHz
2: 5.0 kHz
3: 8.0 kHz
4: 10.0 kHz
5: 12.5 kHz
6: 15.0 kHz
F: Enables detailed settings using
parameters C6-03 to C6-05
Set the carrier frequency upper
limit and lower limit in kHz units.
The carrier frequency gain is set as
follows:
With the vector control method, the
upper limit of the carrier frequency
is fixed in C6-03.
Carrier frequency
Output frequency x (C6-05) x K
(Max. output frequency)
K is a coefficient that depends on
the setting of C6-03.
C6-03 ≥ 10.0 kHz: K = 3
10.0 kHz > C6-03 ≥ 5.0 kHz: K = 2
5.0 kHz > C6-03: K = 1
Change
Setting
Factory
during
Range
Setting
Opera-
tion
*1
0 or 1
No
0
1
0,1
(C6-
(C6-
01=0)
01=0)
No
*2
0 to F
6
(C6-
(C6-
01=1)
01=1)
2.0 to
2.0
No
2.5
kHz
0.4 to
2.0
No
2.5
kHz
Output
frequency
00 to
00
No
99
Control Methods
Open
Regis-
V/f
Flux
Page
Loop
ter
V/f
with
Vec-
Vec-
PG
tor
tor
Q
Q
Q
Q
223H
4-20
Q
Q
Q
Q
224H
4-21
A
A
A
A
225H
A
A
No
A
226H
A
A
No
A
227H
4-7
6-2
4-8
6-2
6-2
6-2
6-2
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