Condition Monitoring Unit CMU 1000
Page 99
V03 R21 - 2020/07/09
HYDAC ELECTRONIC GMBH
Mat.-No.:
669749
7.4.12 Characteristic Curve
The Characteristic curve function is used to convert input values
from one range into another. The conversion can be subdivided into
various segments through the specification of up to 20 nodes.
The
Table
parameter is used to specify the nodes. Each value pair
is in a different line in the table. The values for x and y are separated
by a colorn. The X values must be listed in ascending order. No x
value may appear more than once. Empty lines are removed
automatically. The number of values will also be defined
automatically on the basis of the available lines. It must be between
2 and 20.
The ranges between the nodes are interpolated linearly; the values
outside the nodes are extrapolated from the last segment. A
limitation is easy to set up by simply setting another node nearby
that has the same y value. If for example the range of 0 to 450 is to
be converted to percent and at the same time limited to 0 and 100,
then this is accomplished with the following value pairs:
-1:
0
0:
0
450:
100
451:
100
Inputs: x:
X value of the charactertistic curve
(Numerical).
Outputs: y:
Function value from the charactertistic curve
(Numerical)
Parameters: p
1
:
Table
(values table)
7.4.13 Slope
The
Slope
function is used to prevent rapid value changes. Under
stable conditions, the input value is shown at the output. Changes of
the input value are however not passed along directly to the output,
but rather only in small steps. Like a slope, so to speak. Different
slopes can be defined thereby for positive and negative value
modifications.
The parameters
Descending slope
and
Ascending slope
are used to
specify the maximum permissible value changes per second.
If for example the value 5 is set for
Ascending ramp
and the input
value jumps from 0 to 100, then the output will be only slowly
increased, and it will take 20 seconds for the output value to reach
100.
Inputs: x:
(Numerical)
Outputs: y: (Numerical)
Parameters: p
1
:
Descending slope
(Numerical)
p
2
:
Ascending slope
(Numerical)
