YASKAWA FSDrive-MV1000 Parameter Manual page 127

The slip compensation limit is constant throughout the constant torque range (frequency reference
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 2.24
C3-04: Slip Compensation Selection during Regeneration
■
Enables or disables slip compensation during regenerative operation.
Even if enabled, this function does not operate when the output frequency is too low.
No.
C3-04 Slip Compensation Selection during Regeneration
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.
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 can help improve the speed
precision when moving heavy loads at high speeds. When this function is enabled, the reduction in flux causes a slightly
higher current to compensate the torque. Keep this in mind when selecting the drive.
No.
C3-05 Output Voltage Limit Operation Selection
<1> For details on the default settings, refer to
Setting 0: Disabled
Setting 1: Enabled
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.
Output Voltage Limit Operation Start Level
C3-16
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
E1-04
E1-06 × C3-03
C3-03
common_TMonly
Figure 2.24 Slip Compensation Limit
Name
Name
Control Mode Dependent Parameter Default Values on page
Name
(Percentage Modulation)
Output Frequency
E1-06 E1-04
Base Maximum
Frequency Frequency
Setting Range
0 to 2
Setting Range
0 or 1
Setting Range
70.0 to 90.0%
2.3 C: Tuning
≤ E1-06). In the
Default
0
Default
Determined by A1-02
<1>
79.
Default
85.0%
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