
7.3.4
Slip compensation
Slip compensation serves to automatically compensate for a load-dependent speed loss.
Preconditions
In order that the slip compensation can determine the rated slip correctly, the following
parameters must be set correctly:
•
Rated speed
•
Rated frequency
•
Number of pole pairs (automatically calculated from Rated speed and Rated frequency)
Parameter
Name / value range / [default setting]
Info
0x2B09:001
(PAR 315/001)
Slip compensation: Gain
(Slip compens.: Slip: gain)
-200.00 ... [100.00] ... 200.00 %
Adjustment in percent of the slip calculated.
•
For instance required for deviations of the real motor data from the
nameplate data.
•
A setting of 100 % corresponds to the rated slip of the machine in the
nominal operating point.
0x2B09:002
(PAR 315/002)
Slip compensation: Filter time
(Slip compens.: Filter time)
1 ... [5] ... 6000 ms
0x2C02:004
(PAR 351/004)
Motor parameter (ASM): Slip frequency
(ASM motor par.: ASM slip freq.)
•
Read only: x.x Hz
Display of the rated slip determined.
0x2C01:001
Motor parameters: Number of pole pairs
•
Read only
Display of the number of pole pairs calculated from the rated speed and
rated frequency.
0x2C01:004
(PAR 320/004)
Motor parameters: Rated speed
(Motor parameters: Mot. speed)
50 ... [1450] ... 50000 rpm
General motor parameters.
Carry out settings as specified by motor nameplate data.
0x2C01:005
(PAR 320/005)
Motor parameters: Rated frequency
(Motor parameters: Mot. frequency)
1.0 ... [50.0] ... 1000.0 Hz
Motor control
Optimisation of motor control
Slip compensation
87
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