2.3 C: Tuning
132 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
The slip compensation limit is constant throughout the constant torque range (frequency reference ≤ E1-06). In the
constant power range (frequency reference ≥ E1-06), it is increased based on C3-03 and the output frequency as shown in
the following diagram.
Figure 2. 25
Figure 2.25 Slip Compensation Limit
n C3-04: Slip Compensation Selection during Regeneration
Enables or disables slip compensation during regenerative operation.
This function does not operate when the output frequency is too low, regardless of whether it has been enabled.
Setting 0: Disabled
Slip compensation is not provided. Depending on the load and mode of operation, the actual motor speed will be lower or
higher than the frequency reference.
Setting 1: Enabled (6 Hz and above)
Slip compensation is enabled during regenerative operation. It will not be active at output frequencies below 6 Hz.
Setting 2: Enabled (compensation provided wherever possible)
Slip compensation is enabled during regenerative operation, and at frequencies as low as 2 Hz. The drive uses the motor
rated slip set in E2-02 to automatically calculate the frequency range where compensation will be disabled.
n
C3-05: Output Voltage Limit Operation Selection
Determines if the motor flux reference is automatically reduced when the output voltage reaches the saturation range.
If the input power supply voltage is low or the motor has a high voltage rating, this function improves the speed precision
when moving heavy loads at high speeds. When selecting the drive, remember that the reduction in flux causes a slightly
higher current at high speed when this function is enabled.
Setting 0: Disabled
Setting 1: Enabled
n C3-16: Output Voltage Limit Operation Start Level (Percentage Modulation)
Sets the output voltage limit operation start level (percentage modulation) when C3-05 is enabled.
No. Name Setting Range Default
C3-04 Slip Compensation Selection during Regeneration 0 to 2 0
No. Name Setting Range Default
C3-05
<1> Refer to Control Mode Dependent Parameter Default Values on page 84 for details on default settings.
Output Voltage Limit Operation Selection 0 or 1 Determined by A1-02 <1>
No. Name Setting Range Default
C3-16
Output Voltage Limit Operation Start Level (Percentage
Modulation)
70.0 to 90.0% 85.0%
E1-04
E1-06
× C3-03
C3-03
E1-04
Maximum
Frequency
E1-06
Base
Frequency
Output Frequency
MV1000ParameterGuide_E_conditional.book 132 ページ ２０１３年１０月１１日 金曜日 午後８時１８分
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