6 Programming Features
135
Decreasing Motor Speed Fluctuation
Slip Compensation (n002 = 0)
As the load becomes larger, the motor speed is reduced and the motor
slip value is increased. The slip compensating function controls the
motor speed at a constant value even if the load varies.
When the Inverter output current is equal to the Motor Rated Current
(n036), the compensation frequency is added to the output frequency.
Related Constants
* Depends on Inverter capacity. (Refer to pages 245 and 246.)
Note: 1. Slip compensation is not performed under the following condition:
Output frequency < Minimum Output Frequency (n016)
2. Slip compensation is not performed during regeneration.
3. Slip compensation is not performed when the Motor Rated Current
(n036) is set to 0.0 A.
Constant
No.
Name Unit Setting Range Factory
Setting
n036 Motor Rated Current 0.1 A 0% to 150% of In-
verter rated current
*
n111 Slip Compensation Gain 0.1 0.0 to 2.5 0.0
n110 Motor No-load Current 1% 0% to 99%
(100%=Motor Rated
Current n036)
*
n112 Slip Compensation Time
Constant
0.1 s 0.0 to 25.5 s
When 0.0 s is set,
delay time is 2.0 s.
2.0 s
n106 Motor Rated Slip 0.1 Hz 0.0 to 20 Hz *
Compensation Frequency Motor Rated Slip (n106)
Motor Rated Slip (n106) Motor No-load Current (n110)–
Motor Rated Current (n036) Motor No-load Current (n110)–
---------------------------------------------------------------------------------------------------------------------------------------------------
SlipCompensationGain n110()×
×
=
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