YASKAWA T1000V, Техническое руководство

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5.3 C: Tuning
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 137
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Setting 0: Disabled
Slip compensation is not provided. Depending on the load and operation mode (motoring or regenerative) the actual
motor speed will be lower or higher than the frequency reference.
Setting 1: Enabled
Slip compensation is enabled during regenerative operation. It will not be active at output frequencies below 6 Hz.
■
C3-05: Output Voltage Limit Operation Selection
Determines if the motor flux reference is automatically reduced when output voltage reaches the saturation range.
Setting 0: Disabled
Setting 1: Enabled
◆
C4: Torque Compensation
The torque compensation function compensates for insufficient torque production at start-up or when a load is applied.
Note: Before making changes to the torque compensation parameters make sure the motor parameters and V/f pattern are set properly
or perform Auto-Tuning.
■
C4-01: Torque Compensation Gain
Sets the gain for the torque compensation function.
Torque Compensation in V/f Control:
The drive calculates the motor primary voltage loss using the output current and the terminal resistance value (E2-05)
and then adjusts the output voltage to compensate insufficient torque at start or when load is applied. The effect of this
voltage compensation can be increased or decreased using parameter C4-01.
Torque Compensation in Open Loop Vector Control:
The drive controls the motor excitation current and torque producing current separately. Torque compensation affects the
torque producing current only. C4-01 works as a factor of the torque reference value that builds the torque producing
current reference.
Adjustment
Although this parameter rarely needs to be adjusted, small changes in increments of 0.05 may help in the following
situations:
• Increase this setting when using a long motor cable.
• Decrease this setting when motor oscillation occurs.
Adjust C4-01 so that the output current does not exceed the drive rated current.
■ C4-02: Torque Compensation Primary Delay Time 1
Sets the delay time used for applying torque compensation.
No. Parameter Name Setting Range Default
C3-04 Slip Compensation Selection during Regeneration 0 or 1 0
No. Parameter Name Setting Range Default
C3-05 Output Voltage Limit Operation Selection 0 or 1 0
No.
<1> Default setting depends on the control mode selection in parameter A1-02. The value shown here is for V/f Control. Refer to Control Mode
Dependent Parameter Default Values on page 364 .
Parameter Name Setting Range Default
C4-01 Torque Compensation Gain 0.00 to 2.50 1.00
<1>
No.
<1> Default setting depends on the control mode selection in parameter A1-02. The value shown here is for V/f Control. Refer to Control Mode
Dependent Parameter Default Values on page 364 .
Parameter Name Setting Range Default
C4-02 Torque Compensation Primary Delay Time 1 0 to 60000 ms 200 ms
<1>