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Application and Overload Selections
Select the Overload to Suit the Application
Set C6-01 (CT: Low carrier constant torque, VT: High carrier variable torque) depending on the application
for which the Inverter is used. The setting ranges for the Inverter carrier frequency, overload tolerance, and
maximum output frequency depend on the setting in C6-01.
Related Parameters
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
*2
Carrier
Freq Max
Carrier
frequency
lower
C6-04
limit
*2
Carrier-
Freq Min
Carrier
frequency
propor-
C6-05
tional gain
*2
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. This parameter can be monitored or set only when F is set for C6-02.
-2
6
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
Loop
ter
V/f
with
Vec-
Vec-
PG
tor
tor
Q
Q
Q
Q
223H
Q
Q
Q
Q
224H
A
A
A
A
225H
A
A
No
A
226H
A
A
No
A
227H
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Table of Contents
Troubleshooting
