Baumuller b maXX BM5800 - Page 430

Controllers
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
430
of 814
3.7
18.38 w3-Feedforward act. factor
The currently effective weighting factor for acceleration feedforward from Z18.36– or
Z18.37– is displayed here.
A value of 1 corresponds to 100%.
18.39 w3-Feedforward time constant
Time constant of the acceleration feedforward for the speed controlled operating modes.
The w3-feedforward is implemented as DT1 element. All changes to the speed set value
are differentiated with respect to time, smoothed with the time constant >18.39< and mul
-
tiplied subsequently with Z18.38– w3-Feedforward actual factor.
The smoothing via >18.39< does not affect at position controlled operating modes. Here
an already smoothed acceleration set value is available, whose smoothing occurs via pa
-
rameter Z18.70– w2-Feedforward time constant.
18.40 Ks scaling factor
The entered value must comply with the "system gain" at the nominal point (magnetic flux
= 100% and motor "warm").
The Ks factor >18.40< provides the basis of the parameter "Ks actual value" Z155.10–,
at which a deviating operation from the nominal point must be considered.
The inverse value of the "Ks actual value" Z155.10– (1/Ks
act
) serves in the controller as
standardization constant between the acceleration set value (speed controller output)
and the torque current set value (isq).
See ZThe factor Ks– on page 404 and ZKs Determination– on page 189.
18.41 w2 speed set value filtered
Speed set value after speed set value filter.
This speed set value is used in the speed controller as a set value and is compared with
the speed actual value (
Z18.22–).
18.42 Center frequency x2 speed act value notch filter
Center frequency of the speed actual value notch filter in Hz.