User Constant Tables
5-
25
Carrier Frequency: C6
User constants for the carrier frequency are shown in the following table.
* 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. The setting ranges depend on the capacity of the Inverter. The values for a 200 V Class Inverter of 0.4 kW are given.
* 4. This constant can be monitored or set only when F is set for C6-02.
Con-
stant
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
C6-01
CT/VT
selection
0: CT (low carrier, constant torque,
150% per minute)
1: VT (high carrier, variable
torque, 120% per minute)
0 or 1
1
*1
No
Q
Q
Q
Q
223H
4-5
4-20
6-2
0
*1
C6-02
Carrier
frequency
selection
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
constants C6-03 to C6-05
0,1
(C6-
01=0)
0 to F
(C6-
01=1)
1
(C6-
01=0)
6
*2
(C6-
01=1)
No
Q
Q
Q
Q
224H
4-6
4-18
4-19
6-2
C6-03
*4
Carrier
frequency
upper
limit
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.
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
2.0 to
15.0
*3
15.0
kHz
*2
No
A
A
A
A
225H
6-2
2.0 to
2.5
2.0
kHz
C6-04
*4
Carrier
frequency
lower
limit
0.4 to
15.0
*3
15.0
kHz
*2
No
A
A
No
A
226H
6-2
2.0 to
2.5
2.0
kHz
C6-05
*4
Carrier
frequency
propor-
tional gain
00 to
99
00
No
A
A
No
A
227H
6-2
Carrier frequency
Output frequency x (C6-05) x K
(Max. output frequency)
Output
frequency
