60
• If the speed is less than the target value, increase the slip compensa-
tion gain.
• If the speed is more than the target value, reduce the slip compensa-
tion gain.
Adjustment of the Slip Compensation Time Constant (n112) is normally
not required. Adjust it under the following conditions:
• Reduce the setting if response is slow.
• Increase the setting if speed is unstable.
Select slip compensation status during regeneration as follows:
Motor Constant Calculation
An example of motor constant calculation is shown below.
1. Motor Rated Slip (n106)
2. Motor Line-to-neutral Resistance (n107)
Calculations are based on the line-to-line resistance and insulation
grade of the motor test report.
3. Motor Rated Current (n036)
= Rated current at motor rated frequency (Hz)
*1
(A)
4. Motor No-load Current (n110)
* 1. Base frequency (Hz) during constant output control
* 2. Rated speed (rpm) at base frequency during constant output control
n113 Setting Slip Correction during Regenerative Operation
0 Disabled
1 Enabled
120 × Motor rated frequency (Hz)*
1
Number of motor poles
Motor rated speed (min
-1
)*
2
120/Number of motor poles
E type insulation: Test report of line-to-line resistance at 75°C (Ω) × 0.92 ×
B type insulation: Test report of line-to-line resistance at 75°C (Ω) × 0.92 ×
F type insulation: Test report of line-to-line resistance at 115°C (Ω) × 0.87 ×
No-load current (A) at motor rated frequency (Hz)*
1
Rated current (A) at motor rated frequency (Hz)*
1
100 (%)
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