E3: V/F Pattern For Motor 2 - YASKAWA L1000A Technical Manual

Setting 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.
Setting the Motor Iron-Core Saturation Coefficient 1, 2
E2-07 and E2-08 are set when Auto-Tuning is performed.
Setting the Motor Mechanical Loss
Only required in Closed Loop Vector Control. The drive compensates for the degree of mechanical loss with torque
compensation. Although E2-09 rarely needs to be changed, adjustment may benefit when there is a large amount of
torque loss due to motor bearing friction.
Setting the Motor Iron Loss for Torque Compensation
Only required when using V/f Control. Enter this value in watts to E2-10. The drive uses this setting to improve the
precision of torque compensation.

◆ E3: V/f Pattern for Motor 2

These parameters set the V/f pattern used for motor 2.
switching motors.
Note: The function for switching between two motors cannot be used with a PM motor. E3-
motor control mode is selected (A1-02 = 5, 6, or 7).
■
E3-04 to E3-10
Parameters E3-04 through E3-10 set up the V/f pattern used for motor 2 as shown in
Note: Certain E3- parameters might not be visible depending on the control mode.
details.
No.
E3-04
E3-05
E3-06
E3-07
E3-08
E3-09
E3-10
<1> Default setting is determined by the control mode selected for motor 2 (E3-01).
<2> Values shown here are specific to 200 V class drives; double the value for 400 V class drives.
Figure 5.14
Note: 1. The following conditions must be true when setting up the V/f pattern: E3-09 ≤ E3-07 < E3-06 ≤ E3-04
2. To make the V/f pattern a straight line at a frequency lower than E3-07, set E3-09 equal to E3-07. In this case the E3-08 setting is
disregarded.
3. Parameters E3-04 through E3-10 are reset to their default values when the drive is initialized.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Refer to Setting 16: Motor 2 selection on page 186
Parameter Name
Motor 2 Max Output Frequency
Motor 2 Max Voltage
Motor 2 Base Frequency
Motor 2 Mid Output Frequency
Motor 2 Mid Output Frequency Voltage
Motor 2 Minimum Output Frequency
Motor 2 Minimum Output Frequency Voltage
Output (V)
E3-05
E3-08
E3-10
E3-09
E3-07
Frequency (Hz)
Figure 5.14 V/f Pattern for Motor 2
5.5 E: Motor Parameters
parameters are hidden when a PM
Figure 5.14.
Refer to Parameter Table on page 338
Setting Range
10.0 to 120.0 Hz
0.0 to 255.0 V
<2>
0.0 to 120.0 Hz
0.0 to 120.0 Hz
0 to 255.0 V
<2>
0.0 to 120.0 Hz
0.0 to 255.0 V
<2>
common_TMonly
E3-04
for details on
for
Default
<1>
<1>
<1>
<1>
<1>
<1>
<1>
5
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