N8: Pm Motor Control Tuning - YASKAWA E1000 Technical Manual

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n3-23: Overexcitation Operation Selection
Limit the Overexcitation Deceleration operation selected in parameter L3-04 to forward only or reverse only.
No.
n3-23
Setting 0: Overexcitation Operation as Selected in L3-04 in Forward and Reverse Direction
Setting 1: Overexcitation Operation as Selected in L3-04 in Forward Direction Only
Setting 2: Overexcitation Operation as Selected in L3-04 in Reverse Direction Only

◆ n8: PM Motor Control Tuning

These parameters are available in the vector control modes for permanent magnet motors and can be used to adjust the
control performance.
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n8-45: Speed Feedback Detection Control Gain (OLV/PM)
Sets the gain for internal speed feedback detection control. Although this setting rarely needs to be changed, adjustment
may be necessary under the following conditions:
• Increase this setting if motor oscillation or hunting occurs.
• Decrease this setting in increments of 0.05 to decrease drive responsiveness.
No.
n8-45
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n8-47: Pull-In Current Compensation Time Constant (OLV/PM)
Sets the time constant for the actual current and the pull-in current to match one another.
Although this setting rarely needs to be changed, adjustment may be necessary under the following conditions:
• Increase this setting when it takes too long for the reference value of the pull-in current to match the target value.
• Decrease this setting if motor oscillation occurs.
No.
n8-47
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n8-48: Pull-In Current (OLV/PM)
Sets the d-axis current during no-load operation at a constant speed. Set as a percentage of the motor rated current.
• Increase this setting when hunting occurs or the motor speed is unstable while running at a constant speed.
• If there is too much current when driving a light load at a constant speed, then reduce this value slightly.
No.
n8-48
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n8-49: d-Axis Current for High Efficiency Control (OLV/PM)
Sets the d-axis current reference when running with high load at constant speed. When using an IPM motor, setting this
parameter will increase the efficiency by using the motors reluctance torque and thereby reduce the energy consumption.
This parameter should be set to 0 when using an SPM motor.
Although this setting seldom needs to be changed, please note the following:
• If motor operation is unstable when driving heavy loads, try lowering this setting.
• If motor parameters (E5-) have been changed, this value will be reset to 0 and will need to be readjusted.
No.
n8-49
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
Name
Overexcitation Operation Selection
Name
Speed Feedback Detection Control Gain
Name
Pull-In Current Compensation Time Constant
Name
Pull-In Current
Name
d Axis Current for High Efficiency Control
5.9 n: Special Adjustments
Setting Range Default
0 to 2
Setting Range Default
0.00 to 10.00
Setting Range Default
0.0 to 100.0 s
Setting Range Default
20 to 200%
Setting Range Default
-200.0 to 0.0% Determined by E5-01
0
0.80
5.0 s
30%
5
243