Baumuller b maXX BM5800 - Ks Adaption

Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
505
of 814
3
Kt correction factor
Production-technical deviations of the motor Kt can be corrected by a comparison mea-
surement (dynamo electric machine) by the correction factor, Kt
corr
Z138.23–, without
having to adjust the nominal data of the motor.
3.7.7.5 Ks adaption
The "system gain" can deviate from the nominal point value (e.g. ASM field weakening
or, independent of the motor type, changing load inertia). This can be considered in the
parameter "Ks actual"
Z155.10–. Starting from the Ks factor Z18.40– (Ks at the nominal
point) the Ks value can be adapted as follows accordant to the flux actual value and the
change in the inertia of the drive:
with:
Ks act Ks actual value Z155.10–
Ks factor Ks at rating point Z18.40–
Flux
set
Set value of the magnetic Flux in % Z146.13–
Ks
cycl adapt
Factor of the cyclic Ks adaption Z155.14–, in Q16
(i.e. 2
16
= 1=100%).
The Ks adaption is significant to the following:
m Standardization constant (1/Ks
act
) of the speed controller output and the torque cur-
rent set value.
The magnetic flux is dependent of the saturation influence at the ASM (see ZAdaption to
the Saturation– on page 507).
Cyclic Ks adaption
The torque of inertia changes at some applications. This requires a cyclical change of the
Ks factor and can be adapted via the control and parameter
Z155.14–.
The cyclic Ks adaption is not active by default. It is activated by (controller adaption) mode
Z155.1–bit 4.
The Ks value is updated in RT1 cycle.
Refer to ZThe factor Ks– on page 404 and ZKs Determination– on page 189.
Ks act Ks factor Flux
set
[%]
Ks
cycl adapt
2
16
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