Slip Compensation - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/06
3.23.1.2

Slip compensation

Parameter range:
Warnings
Faults
Function chart number:
In the V/f characteristic operating mode the motor frequency is always lower than
the drive inverter output frequency by the slip frequency f
increased from M
slip s when motoring increases and the motor frequency decreases (from f
This behavior, typical for an induction motor, can be compensated using slip
compensation P1335. This therefore eliminates the speed reduction, caused by the
load, by boosting (increasing) the drive inverter output frequency (refer to Fig.
3-98).
Fig. 3-98
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
P1335
-
-
FP6100
to M ) is increased with a constant output frequency, then the
1 2
Without Slip compensation
M
M
2
M
1
∆f
f f
2 1
Slip compensation
. If the load (the load is
s
With Slip compensation
M
M
2
M
1
f
∆f
f
2
3 Functions
to f ).
1 2
f
f
f
1 out M2
f
out M1
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