Omron RX2 Series - V;F Control (Free V;F)

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7 Advanced Settings
High-function General-purpose Inverter RX2 Series User’s Manual
7-2 Selection of Motor Control Methods
7
7-2-3 V/f Control (Free V/f)
 Parameter
It is suitable for an application in which load varies considerably in rotation speed.
In the free V/f set-up, any intended V/f characteristics can be set by setting the voltage and the fre-
quency at 7 points.
Output voltage of an inverter can be adjusted according to applications. For example, when you use
applications on which loads drastically vary in a rotation speed (output frequency), set frequency that
makes the load heavier and adjust the output voltage. In such way, a motor can be controlled with the
output torque according to loads.
Item Parameter Data Description
Default
data
Control mode
selection,
1st-motor
[AA121] 01
To be used with the V/f control and
the reducing torque characteristics
(IM).
00
Stabilization con-
stant, 1st-motor
[HA110] 0 to 1000(%)
To adjust the control for reducing the
hunting of motors.
100
Async.Motor Base
frequency setting,
1st-motor
[Hb104]
10.00 to the maximum fre-
quency (Hz)
To set the base frequency of motors.
50
*1
*1. Default data when default data selection (UB-02) is set to 01.
Async.Motor Maxi-
mum frequency
setting, 1st-motor
[Hb105]
Base frequency to 590.00
(Hz)
To set the maximum frequency of
motors.
50
*1
Async.Motor rated
voltage, 1st-motor
[Hb106] 1 to 1000 (V) Set the rated voltage of motors.
200V:
230
*1
400V:
400
*1
7-2-3 V/f Control (Free V/f)
f1 f2 f3 f4 f5 f6 f70
V2,V3
V1
V5
V6
V7
V4
Output voltage (V)
Rated
voltage
Base
frequency
Maximum
frequency
Output frequency (Hz)