YASKAWA AC Drive-A1000 Technical Manual page 189

n E2-09: Motor Mechanical Loss
Sets the motor mechanical loss as a percentage of motor rated power (kW) capacity.
Adjust this setting in the following circumstances:
• When there is a large amount of torque loss due to motor bearing friction.
• When there is a large amount of torque loss in a fan or pump application.
The setting for the mechanical loss is added to the torque.
No.
E2-09
n E2-10: Motor Iron Loss for Torque Compensation
Sets the motor iron loss in watts.
No.
E2-10
n 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
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 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.
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.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Parameter Name
Motor Mechanical Loss
Parameter Name
Motor Iron Loss for Torque Compensation
Parameter Name
Motor Rated Power
5.5 E: Motor Parameters
Setting Range
0.0 to 10.0%
Setting Range
Determined by
0 to 65535 W
C6-01 and o2-04
Setting Range
Determined by
0.00 to 650.00 kW
Default
0.0%
Default
Default
o2-04
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