5-4
V/f Control Mode
This mode, which is used by conventional general-purpose inverters, is convenient
when replacing a conventional model with the 3G3MV Inverter because the Inverter in
thismodecanbeoperatedwithoutconsideringtheconstantsofthemotor.Furthermore,
set the Inverter to thismode if the Inverter isconnected to morethan one motor or spe-
cial motors such as high-speed motors.
n002 Control Mode Selection Register 0102
Hex
Changes during
operation
No
Setting
range
0, 1 Unit of
setting
1 Default setting 0
Note This parameter is used for selecting the control mode of the Inverter.
Set Values
Value Description
0 V/f control mode
1 Vector control mode (open loop)
Note 1. Thisparameterisnotinitializedbysettingn001(parameterwrite-prohibitselec-
tion/parameter initialization) to 8 or 9 for parameter initialization.
Note 2. Eachofthefollowingparametersisinitializedaccordingtothecontrolmodeset
inthisparameter.Thedefaultvaluevaries withthecontrolmode.Therefore,be
sure to set the following parameters after setting the control mode in n002.
Parame-
V/f control
(Set value: 0)
Vector control
(Set value: 1)
n014 Middle output frequency 1.5 Hz 3.0 Hz
n015 Middle output frequency
voltage
12.0 V (24.0 V)
(see note 2)
11.0 V (22.0 V)
n016 Minimum output frequency 1.5 Hz 1.0 Hz
n017 Minimum output frequency
voltage
12.0 V (24.0 V)
(see note 2)
4.3 V (8.6 V)
n104 Torque compensation
primary-delay time constant
0.3 s 0.2 s
n111 Slip compensation gain 0.0 1.0
n112 Slip compensation
primary-delay time constant
2.0 s 0.2 s
Note 1. Values in parentheses are for 400-V models.
Note 2.For5.5-and7.5-kWInverters,thisvalueissetto10.0Vfor200-V-classmodels
and to 20.0 V for 400-V-class models.
Basic Operation Chapter 5