YASKAWA P1000 Technical Manual page 197

5.5 E: Motor Parameters
n Setting Motor Parameters Manually
Follow the instructions below when setting motor-related parameters manually instead of Auto-Tuning. Refer to the motor
test report included with the motor to ensure the correct data is entered into the drive.
Set the Motor Rated Current
Enter the motor rated current listed on the nameplate of the motor to E2-01.
Set the Motor Rated Slip
Calculate the motor rated slip using the base speed listed on the motor nameplate. Refer to the formula below, then enter that
value to E2-02.
Motor rated slip = rated frequency [Hz] – base speed [r/min] × (no. of motor poles) / 120
Set the No-Load Current
Enter the no-load current at rated frequency and rated voltage to E2-03. This information is not usually listed on the nameplate.
Contact the motor manufacturer if the data cannot be found.
The default setting of the no-load current is for performance with a 4-pole Yaskawa motor.
Set the Line-to-Line Resistance
E2-05 is normally set during Auto-Tuning. If Auto-Tuning cannot be performed, contact the motor manufacturer to determine
the correct resistance between motor lines. The motor test report can also be used to calculate this value using the formulas
below:
• E-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75 °C.
• B-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75 °C.
• F-type insulation: Multiply 0.87 times the resistance value (Ω) listed on the test report at 115 °C.
Set the Motor Leakage Inductance
The motor leakage inductance set to E2-06 determines the amount of voltage drop relative to the motor rated voltage. Enter
this value for motors with a low degree of inductance, such as high-speed motors. This information is usually not listed on the
motor nameplate. Contact the motor manufacturer if the data cannot be found.
Set the Motor Iron-Core Saturation Coefficient 1, 2
E2-07 and E2-08 are set when Auto-Tuning is performed.
Set the Motor Iron Loss for Torque Compensation
Enter this value in watts to E2-10. The drive uses this setting to improve the precision of torque compensation.
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YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual 197