Omron SYSDRIVE 3G3RV, User Manual

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Manual Motor Constant Parameter Setting Methods
The
motor constant parameters settings methods are given below. Make (enter) settings referring to the motor
test
report.
Motor Rated Current Setting
Set
E2-01 to the rated current on the motor nameplate.
Motor Rated Slip Setting
Set
E2-02 to the motor rated slip calculated from the number of rated rotations on the motor nameplate.
Amount
of motor rated slip = Motor rated frequency (Hz) - No. of rated rotations (r/min) x No. of motor poles/
120.
Motor No-Load Current Setting
Set
E2-03 to the motor no-load current using the rated voltage and rated frequency. The motor no-load current
is
not normally written on the motor nameplate. Consult the motor manufacturer.
Factory
setting is the no-load current value for a standard Yaskawa 4-pole motor.
Number of Motor Poles Setting
E2-04
is displayed only when V/f control method with PG is selected. Set the number of motor poles (number
of
poles) as written on the motor nameplate.
Motor Line-to-Line Resistance Setting
E2-05
is set automatically when performing motor line-to-line resistance autotuning. When you cannot per-
form
tuning, consult the motor manufacturer for the line-to-line resistance value. Calculate the resistance from
the
line-to-line resistance value in the motor test report using the following formula, and then make the setting
accordingly.
•
E-type
isolation: [Line-to line resistance ( Ω
)
at 75 °
C
of test report] × 0.92 ( Ω
)
•
B-type
isolation: [Line-to line resistance ( Ω
)
at 75 °
C
of test repor]t × 0.92 ( Ω
)
•
F-type
isolation: [Line-to line resistance ( Ω
)
at 115 °
C
of test report] × 0.87 ( Ω
)
Motor Leak Inductance Setting
Set
the amount of voltage drop due to motor leak inductance in E2-06 using the percentage over the motor
rated
voltage. Make this setting when the high-speed motor inductance is small. If the inductance is not writ-
ten
on the motor nameplate, consult the motor manufacturer.
Motor Iron Saturation Coefficients 1 and 2 Settings
E2-07
and E2-08 are set automatically using autotuning.
Motor Iron Loss for Torque Compensation Setting
E2-10
is displayed only when in V/f control method. To increase the torque compensation accuracy when in
V/f
control method, set the motor iron loss in Watts.