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.
No.
Parameter Name
Setting Range
Default
C3-05
Output Voltage Limit Operation Selection
0, 1
0
Setting 0: Disabled
Setting 1: Enabled
n
C3-21: Motor 2 Slip Compensation Gain
Improves the speed accuracy for motor 2 and functions in the same way that C3-01 functions for motor 1. Adjust this parameter
only after setting the motor rated current (E4-01), motor rated slip (E4-02), and the motor no-load current (E4-03).
Refer to C3-01: Slip Compensation Gain on page 224
for details on adjusting this parameter.
No.
Parameter Name
Setting Range
Default
C3-21
Motor 2 Slip Compensation Gain
0.0 to 2.5
Determined by E3-01
Note:
Default setting is 0.0 in V/f Control (E3-01 = 0). Default setting is 1.0 in Open Loop Vector Control (E3-01 = 2) and Closed Loop Vector
Control (E3-01 = 3). In Closed Loop Vector Control, slip compensation gain acts as an adaptable gain.
n
C3-22: Motor 2 Slip Compensation Primary Delay Time
Functions for motor 2 the same way that C3-02 functions for motor 1.
Refer to C3-02: Slip Compensation Primary Delay Time on page 225
for details on adjusting this parameter.
No.
Parameter Name
Setting Range
Default
C3-22
Motor 2 Slip Compensation Primary Delay Time
0 to 10000 ms
Determined by A1-02
Note:
The default for V/f Control (E3-01 = 0) is 2000 ms. The default for Open Loop Vector Control (E3-01 = 2) is 200 ms.
n
C3-23: Motor 2 Slip Compensation Limit
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip (E4-02).
No.
Parameter Name
Setting Range
Default
C3-23
Motor 2 Slip Compensation Limit
0 to 250%
200%
The slip compensation limit is constant throughout the constant torque range (frequency reference ≤ E3-06). In the constant
power range (frequency reference ≥ E3-06), it is increased based on C3-23 and the output frequency as illustrated in
.
E3-04
E3-06 × C3-23
C3-23
E3-04
Maximum
Frequency
E3-06
Base
Frequency
Output Frequency
Figure 5.35 Slip Compensation Limit
n
C3-24: Motor 2 Slip Compensation Selection during Regeneration
Functions for motor 2 the same way that C3-04 functions for motor 1.
Refer to C3-04: Slip Compensation Selection during Regeneration on page 225
for details on adjusting this parameter.
No.
Parameter Name
Setting Range
Default
C3-24
Motor 2 Slip Compensation Selection during
Regeneration
0 to 2
0
Setting 0: Disabled
5.3 C: Tuning
226
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Summary of Contents for U1000 iQpump Drive
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