n107 : Slip Compensation Gain Factory setting: 0.0 %
(Slip Comp Gain)
Range: 0.0 to 9.9 %
Slip compensation is used to increase motor speed to account for slip; the drive
accomplishes this by automatically boosting output frequency, with a corresponding boost
in output voltage.
This parameter sets the slip compensation gain, in increments of 0.1%. When the gain is
1.0, the output frequency is increased by 1% of the n013 setting at rated current. A
setting of 0.0 results in no slip compensation.
EXAMPLE:
Desired frequency is 45 Hz
Motor slip = 3% at full load
(n107 = 3.0)
Actual output frequency at
full load = 45 x 1.03 = 46.35 Hz
5-51
5.23.1 SLIP COMPENSATION
Fref
n031
n032
+
+
–
+
400 Hz
SFS
SOFT STARTER
10% LIMITATION
n107
INTERNAL
FREQUENCY
REFERENCE
n108
K
CURRENT
DETECTOR
NOTE: When Fref is less than n016 setting, this function is disabled.
Slip Compensation Block Diagram
V
f
46.35 Hz actual output
3% frequency
boost
corresponding
voltage boost
45 Hz command
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