6-2
Application and Overload Selections
îš‹ 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.
îš„Related Constants
* 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
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 QQQQ223H
0
*1
C6-02
Carrier fre-
quency
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 QQQQ224H
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 fol-
lows:
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 AAAA225H
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
2.0 to
2.5
2.0 kHz
C6-05
*4
Carrier fre-
quency pro-
portional
gain
00 to
99
00 No A A No A 227H
Carrier frequency
Output frequency x (C6-05) x K
(Max. output frequency)
Output
frequency
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