YASKAWA A1000 Technical Manual page 218

5.5 E: Motor Parameters

E2-07: Motor Iron-Core Saturation Coefficient 1
Sets the motor iron saturation coefficient at 50% of the magnetic flux. If Rotational Auto-Tuning completes successfully,
then this value is automatically calculated and set to E2-07. This coefficient is used when operating with constant output.
No.
E2-07

E2-08: Motor Iron-Core Saturation Coefficient 2
Sets the motor iron saturation coefficient at 75% of the magnetic flux. If Rotational Auto-Tuning completes successfully,
then this value is automatically and set to E2-08. This coefficient is used when operating with constant output.
No.
E2-08

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
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

E2-10: Motor Iron Loss for Torque Compensation
This parameter sets the motor iron loss in watts.
No.
E2-10

E2-11: Motor Rated Power
This parameter 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
Note: The display resolution depends on the rated output power of the drive after the Drive Duty has been set in parameter C6-01.
Drives with a maximum output up to 300 kW will display this value in units of 0.01 kW (two decimal places). Drives with a
maximum output greater than 300 kW will display this value in units of 0.1 kW (one decimal place). Refer to
page 32 for details.

Setting Motor Parameters Manually
Follow the instructions below when setting motor-related parameters manually instead of using the Auto-Tuning feature.
Refer to the motor test report included with the motor to make sure 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
Use the base speed listed on the motor nameplate to calculate the rated slip. Refer to the formula below, then enter that
value to E2-02.
Motor rated slip = rated frequency [Hz] –base speed [min
218
Parameter Name
Motor Iron-Core Saturation Coefficient 1
Parameter Name
Motor Iron-Core Saturation Coefficient 2
Parameter Name
Motor Mechanical Loss
Parameter Name
Motor Iron Loss for Torque Compensation
Parameter Name
Motor Rated Power
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
]  (no. of motor poles) / 120
-1
Setting Range
0.00 to 0.50
Setting Range
E2-07 to 0.75
Setting Range
0.0 to 10.0%
Setting Range
Determined by C6-01 and
0 to 65535 W
Setting Range
Determined by
0.00 to 650.00 kW
C6-01 and o2-04
Nameplate on
Default
0.50
Default
0.75
Default
0.0%
Default
o2-04
Default