6-12
6-6 Slip Compensation Function
The slip compensation function calculates the motor torque according to
the output current, and sets gain to compensate for output frequency.
This function is used to improve speed accuracy when operating with a
load.
n64 Rated Motor Slip Changes during
operation
Yes
Setting
range
0.0 to 20.0 (Hz) Unit of
setting
0.1 Hz Default setting (see note)
Note The default setting varies with the capacity of the Inverter model.
Set Values
•Set the rated slip value of the motor in use.
•This parameter is used as a slip compensation constant.
•Calculate
the rated motor slip value from the rated frequency (Hz) and rpm on the
mo
-
tor nameplate by using the following formula.
Rated slit value (Hz) y Rated frequency (Hz) –
Rated rpm Number of poles
120
n65 Motor Current with No Load Changes during
operation
No
Setting
range
0 to 99 (%) Unit of
setting
1% Default setting (see note)
Note The default setting varies with the capacity of the Inverter model.
Set Values
•Set
the motor current with
no load in percentage based on the rated motor current as
100%.
•Contact the motor manufacturer for the motor current with no load.
•This parameter is used as a slip compensation constant.
Advanced Operation Chapter
6
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