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Baumuller b maXX BM3000 User Manual

Baumuller b maXX BM3000
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Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
293
of 820
4
Ramp with PT
1
filter and response
Figure 119: Friction torque compensation with PT
1
filter and response
This friction torque compensation is symmetrical to speed 0 and is executed with the
speed set value only. A difference is made between three cases:
Starting the control: Actual current value is 0 and no default setting of direction.
n Setting via output value 1 (Z154.5)
Start-stop: Actual current value doesn't reach 0. The values, which are added are
lower. The curve is flatter than the previous one; the friction torque compensation is
lower. Friction torque compensation often isn't necessary.
n Setting via output value 2 (Z154.6)
Reversal: Actual current value is negative. The static friction torque as well as the
dynamic friction torque (from the other direction) must be compensated.
n Setting via output value 3 (Z154.7)
The slope of the friction torque curve is calculated via the lower speed threshold
(Z154.3). Additionally to the slope a PT
1
filter is effective with the time constant of pa-
rameter Z154.10 and the speed deviation is feedbacked and it is responded to the de-
viation. If the speed actual value is greater than the speed set value, the compensation is
stopped. The compensation is continued not until the speed deviation drops again.
If the speed decreases to 0 rpm, the actual compensation value is added to the integral
term of the speed controller and is reset to 0 subsequently. The result is no change of the
torque set value and the friction compensation function can be started again.

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Baumuller b maXX BM3000 Specifications

General IconGeneral
BrandBaumuller
Modelb maXX BM3000
CategoryMeasuring Instruments
LanguageEnglish