Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
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of 814
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18.30 Derivate term speed controller
Display of the D-term in the speed controller.
18.31 Position controller output
Speed set value from the position controller without the part of the speed feedforward.
18.32 Speed controller output
Acceleration set value from the position controller without the part of the acceleration
feedforward.
18.33 Time constant speed set value filter
Time constant of the PT
1
filter to smooth the w2 Speed set value total Z18.21– and to
calculate the e2 speed error value Z18.23–.
18.35 w3 acceleration feedfwd. act. value
The parameter displays the current value of the acceleration feedforward in degrees/ s²,
i.e. the value after the parameter w3-Feedforward act. factor
Z18.38–.
18.36 w3-Feedforward factor pos accel.
Weighting factor for acceleration feedforward
Factor for acceleration feedforward during the acceleration phase (positive change of
speed). See also
Z18.38–.
A value of 1 corresponds to 100%.
18.37 w3-Feedforward factor neg. accel.
Weighting factor for acceleration feedforward
Factor for acceleration feedforward during the braking phase (negative change of speed).
See also
Z18.38–.
A value of 1 corresponds to 100%.
Friction assists during braking, so a reduced feedforward during braking can make sense.
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