YASKAWA L1000A Technical Manual page 190

5.5 E: Motor Parameters
E2-09: Motor Mechanical Loss
■
There is normally no need to change this parameter from the default value. This parameter sets to the motor mechanical
loss as a percentage of motor rated power (kW) capacity.
Adjust this setting when there is a large amount of torque loss due to motor bearing friction.
The setting for the mechanical loss is added to the torque.
No.
E2-09
■ E2-10: Motor Iron Loss for Torque Compensation
Sets the motor iron loss in watts.
No.
E2-10
E2-11: Motor Rated Power
■
Sets the motor rated power in kW. If Auto-Tuning completes successfully, the value entered to T1-02 will automatically
be saved to E2-11.
No.
E2-11
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.
Setting the Motor Rated Current
Enter the motor rated current listed on the nameplate of the motor to E2-01.
Setting 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
Setting the No-Load Current
Enter the no-load current at rated frequency and rated voltage to E2-03. The no-load current 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.
Setting the Number of Motor Poles
Only required in V/f Control with PG and Closed Loop Vector Control. Enter the number of motor poles as indicated on
motor nameplate.
Setting 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 (
• B-type insulation: Multiply 0.92 times the resistance value (
• F-type insulation: Multiply 0.87 times the resistance value (
190
Parameter Name
Motor Mechanical Loss
Parameter Name
Motor Iron Loss for Torque Compensation
Parameter Name
Motor Rated Power
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Setting Range
0.0 to 10.0%
Setting Range
0 to 65535 W
Setting Range
0.00 to 650.00 kW
) listed on the test report at 75°C (167°F).
Ω
) listed on the test report at 75°C (167°F).
Ω
) listed on the test report at 115°C (239°F).
Ω
Default
0.0%
Default
Determined by o2-04
Default
Determined by o2-04