YASKAWA A1000

5.5 E: Motor Parameters
222 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
 E4-08: Motor 2 Motor Iron-Core Saturation Coefficient 2
Sets the motor iron saturation coefficient at 75% of magnetic flux. This value is automatically set during Rotational
Auto-Tuning. Adjust this parameter when operating in the constant output range.
 E4-09: Motor 2 Mechanical Loss
There is normally no need to change this parameter from the default value.
Sets the motor mechanical loss as a percentage of motor rated power
(kW).
This parameter may need to be adjuste
d 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.
 E4-10: Motor 2 Iron Loss
Sets the motor 2 iron loss in watts.
 E4-11: Motor 2 Rated Power
Sets the motor 2 rated power. If Auto-Tuning completes successfully, the value entered to T1-02 will automatically be
saved to E4-11.
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 Nameplate on
page 32 for details.
 E5: PM Motor Settings
These parameters set the motor data of a PM motor.
When YASKAWA motors are used, entering the motor code written on the motor nameplate
will set up the E5-
parameters.
For all other PM motors, Auto-Tuning can
be performed. If motor data is known, it can also be entered manually.
Note: 1. E5- parameters are visible only when a PM motor control mode is selected (A1-02 = 5, 6, or 7).
2. E5- parameters are not reset when the drive is initialized using parameter A1-03.
When using a YASKAWA motor without a motor code or when using a PM motor from another company, set the
parameters according to the motor nameplate values and test report values.
No. Parameter Name Setting Range Default
E4-08 Motor 2 Motor Iron-Core Saturation Coefficient 2 [E4-07] to 0.75 0.75
No. Parameter Name Setting Range Default
E4-09 Motor 2 Mechanical Loss 0.0 to 10.0% 0.0%
No. Parameter Name Setting Range Default
E4-10 Motor 2 Iron Loss 0 to 65535 W
Determined by C6-01 and
o2-04
No. Parameter Name Setting Range Default
E4-11 Motor 2 Rated Power 0.00 to 650.00 kW Determined by o2-04