The default value of motor slip is set to 1.78 Hz. Motor slip is obtained from the nameplate.
Take 60Hz, 4-pole motor for example, synchronous speed:
1800 rpm
4
60120120
=
×
=
×
=
Pole
Frequence
N
Rated speed in the nameplate is 1700 rpm, then
HzSlip 67.1
60
17001800
=
−
=
Adjusting motor slip will change the rotor resistance parameter. The motor slip is adjusted depending on the
motor performance.
Code Parameter Name / Range
02-37 Motor Mechanical Loss
0.0~10.0 %
Adjustment range of mechanical loss is 0.0~10.0%. It is enabled only in the speed mode and the speed com-
mand being 0.
If the speed command is 0 and the shaft will be at slow drift causing to be static incompletely, adjust upwards
the range of mechanical loss until the shaft is completely static.
Note: After executing auto-tuning, parameters which marked <1> will renew the value. Please refer Group 17: Automatic
Tuning Parameters for more detail.
VDI100 • Instruction manual 141
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