YASKAWA L1000A Technical Manual page 176

5.3 C: Tuning
Figure 5.8
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.
No.
C3-04
Setting 0: Disabled
Slip compensation is not provided. The actual motor speed might be higher than the speed 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 to 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 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.
Note: Available control modes for parameter C3-05 vary by drive model: Models CIMR-LU20008 to 20415, 40005 to 40605,
and 50003 to 50200: Available when A1-02 = 2, 3
No.
C3-05
Setting 0: Disabled
Setting 1: Enabled
C3-21: Motor 2 Slip Compensation Gain
■
Used to improve speed accuracy for motor 2. Functions in the same way that C3-01 functions for motor 1.
Adjust this parameter only after the motor rated current (E4-01), motor rated slip (E4-02), and the motor no-load current
(E4-03) have all been set.
Refer to C3-01: Slip Compensation Gain on page 175
No.
C3-21
Note: Default setting is 0.0 in V/f Control (A1-02 = 0). Default setting is 1.0 in Open Loop Vector Control (A1-02 = 2) and Closed Loop
Vector Control (A1-02 = 3). In Closed Loop Vector Control, slip compensation gain acts as an adaptable gain.
176
E1-04
E1-06 × C3-03
C3-03
Figure 5.8 Slip Compensation Limit
Parameter Name
Slip Compensation Selection during Regeneration
Parameter Name
Output Voltage Limit Operation Selection
Parameter Name
Motor 2 Slip Compensation Gain
Output speed
E1-06 E1-04
Base Maximum
Frequency Frequency
Setting Range
0 or 1
for details on adjusting this parameter.
Setting Range
0.0 to 2.5
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
common_TMonly
Setting Range
0 to 2
Default
Determined by A1-02
Default
Determined by E3-01
Default
0