Omron RX2 Series User Manual

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6 Basic Parameter Settings
High-function General-purpose Inverter RX2 Series User’s Manual
6-2 Parameter Setting for Motor Related
6
6-2-2 Motor Constant Setting
Precautions for Correct Use
• Set the motor constant I0 in the following way if it is switched from 3G3RX-V1 Series.
[Hb116]=(50Hz/A003)×H023 (or H033)
• When the base frequency is changed, the reference value of the motor constant I0 is
changed and the change is recognized (the set value is kept). To obtain a correct value with
the auto-tuning or call the initial value of induction motor (IM), set another value in the
selection of number of motor poles [Hb103], for example, set to 2 poles from 4 and then to 4
poles again. This results in setting data corresponding to the base frequency after the
change in the Async.Motor constant Io, 1st-motor [Hb116].
Additional Information
• The base (maximum) frequency can be calculated from the rated number of revolutions of
the motor (min
-1
) and the number of poles in the following formula.
Base (maximum) frequency (Hz) = rated number of revolutions (min
-1
) × number of poles
(pole)/120
• The motor constant Ke is the peak value of the phase inducted voltage (mV) per electrical
angular speed (rad/s).
IM Motor Constant Parameters
Item Parameters Data Description Default data
Async.Motor con-
stant R1,
1st-motor
[Hb110]
0.000001 to
1000.000000(Ω)
Sets the primary resistance of IM.
Varies
depending
on inverter
models and
settings of
duty rating.
Async.Motor con-
stant R2,
1st-motor
[Hb112]
0.000001 to
1000.000000(Ω)
Sets the secondary resistance of
IM.
Async.Motor con-
stant L, 1st-motor
[Hb114]
0.000001 to
1000.000000(mH)
Sets the leakage inductance of
IM.
Async.Motor con-
stant Io, 1st-motor
[Hb116] 0.01 to 10000.00(A) Sets the no-load current of IM.
Async.Motor con-
stant J, 1st-motor
[Hb118]
0.00001 to
10000.00000(kgm
2
)
Sets the moment of inertia of the
system.
SM/PMM Motor Constant Parameters
Item Parameters Data Description Default data
Async.Motor con-
stant R1,
1st-motor
[Hd110]
0.000001 to
1000.000000(Ω)
Sets the resistance of SM/PMM.
Varies
depending
on inverter
models and
settings of
duty rating.
Async.Motor con-
stant R2,
1st-motor
[Hd112]
0.000001 to
1000.000000(mH)
Sets the d-axis inductance of
SM/PMM.
Async.Motor con-
stant L, 1st-motor
[Hd114]
0.000001 to
1000.000000(mH)
Sets the q-axis inductance of
SM/PMM.
Async.Motor con-
stant Io, 1st-motor
[Hd116] 0.1 to 100000.0(mVs/rad)
Sets the calculated value of
induced voltage of SM/PMM.
Async.Motor con-
stant J, 1st-motor
[Hd118]
0.00001 to
10000.00000(kgm
2
)
Sets the moment of inertia of the
system.

Omron RX2 Series Specifications

General

Brand	Omron
Model	RX2 Series
Category	Inverter
Language	English