YASKAWA Varispeed L7, Instruction Manual, Page: 180 / 243

Motor and V/f Pattern Setup
5-
51
5
Motor Line-to-Line Resistance Setting (E2-05)
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 insulation: [Line-to line resistance (
Ω
) at 75
°
C of test report]
×
0.92 (
Ω
)
•
B-type insulation: [Line-to line resistance (
Ω
) at 75
°
C of test repor]t
×
0.92 (
Ω
)
•
F-type insulation: [Line-to line resistance (
Ω
) at 115
°
C of test report]
×
0.87 (
Ω
)
Motor Leak Inductance Setting (E2-06)
Set the amount of voltage drop due to motor leakage inductance in E2-06 as percentage of the motor rated
voltage. Make this setting when using high-speed motors because the standard value will be too high. (Nor-
mally, high speed motors have a low inductance compared to standard motors.) If the inductance is not written
on the motor nameplate, consult the motor manufacturer.
Motor Iron Saturation Coefficients 1 and 2 Settings (E2-07)
E2-07 and E2-08 are set automatically during rotating autotuning.
Motor Iron Loss for Torque Compensation Setting (E2-08)
E2-10 is displayed only in V/f control method and can be set to increase the torque compensation accuracy.
The motor iron loss has to be set in kW.
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