MLD-S Tech-FB Library Description - Bosch Rexroth

1-50 MLD-S Technology Library Rexroth MLD-S Tech-FB Library
Fig. 1-68: Continuous Parameter Adjustment
Functional Description
The adjustment of the influenced variable, „Value“ may take place in
positive or negative direction. The limits set a valid range for adjusting the
variable. Specifying a modulo value allows the adjustment to be withing
an axis‘ frame fo reference. Predefining increments and increments per
second determines the alteration velocity of the influenced variable. It is
possible to write a given value („PresetValue“), inside the valid operating
range, directly to the influenced variable.
After activation, with „Enable“, the influenced variable can be changed via
inputs „Inc“ (positive direction) and „Dec“ (negative direction). While input
„Inc“or Dec is set, the influenced variable is continuously increased (or
decreased) with the given velocity. (StepsPerSecond * StepWidth).
At initialization, ensure the inputs „ModuloValue“, „HighLimit“ and
„LowLimit“, contain valid values.
By determining weighting factors („AdjWeightFactors[]“) and the
corresponding time intervals („AdjTimeIntervals[]“) it is possible to make
time-dependent velocity modifications. The weighting factors and time
intervals must also be set on the inputs „StepsPerSecond“ and
„StepWidth“. Depending on the actual time interval, the alteration velocity
is then multilpied with the appropriate weighting factor. The figure below
shows the behavior of the block with an example configuration: The input
factors of „AdjTimeIntervals“ ([T1; T2; T3; T4]) are specified in seconds.
T5 specifies the period after completion of time interval T4 when the
adjustment procedure aborts. The input factors of „AdjWeightFactors“
([0,5; 1; 1,5; 2; 4]) determine the weighting of the alteration velocity. The
last value of „AdjWeightFactors [5]“ is assigned to time interval T5.
Fig. 1-69: WeightedAdjustment
Note:
When a time interval = 0, so the next weighting factor is used
until the adjustment process aborts. Example: If
DOK-MLD-S*-TechFB*****-AW01-EN-D