5. Parameters 5-27
5.5.5 Slip compensation
• Slip compensation function improves speed control accuracy when the
motor is operating with a load by calculating the motor torque
according to the output current.
5.5.5.1 Setting the slip compensation gain : S4.01
Parameter
No.
Name Unit
Setting
range
Factory
Setting
Changeable
during
operation
S4.01
Slip
Compensation
Gain
1%
0
~S4.03
0 O
5.5.5.2 Setting the slip compensation delay : S4.02
Parameter
No.
Name Unit
Setting
range
Factory
Setting
Changeable
during
operation
S4.02
Slip
Compensation
Delay Time
1msec 0~9999 200 X
• Normally S4.02 does not need to be adjusted.
• Lower the value in S4.02 if the response time of slip compensation is
too slow.
5.5.5.3 Slip compensation limit : S4.03
Parameter
No.
Name Unit
Setting
range
Factory
Setting
Changeable
during
operation
S4.03
Slip
Compensation
Limit
1%
0
~250
200 X
• The setting unit of S4.03 is the percentage of motor rated slip(C2.05).
• Raise the slip compensation limit in S4.03 if the speed is lower than the
target value and no changes takes place even after the adjustment of
slip compensation gain.
5-28 MOSCON-E7 User’s Manual
Figure 5.11 Slip compensation limit
• Sum of the reference frequency and the slip compensation limit
does not exceed the speed capacity of the system.
• Raise the value in S4.02 if speed control characteristics are unstable.
Slip Compensation Limit
C 0.02
C 0.04
X
S 4.03
C 0.04 C 0.02
Output
Frequency
C 0.04 : Base Frequenc
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