HYDAC CMU 1000 User Manual
Page 94
Condition Monitoring Unit CMU 1000
Page 94
Revised 17.12.2009
HYDAC ELECTRONIC GMBH Mat.-No.:
669749
7.4.10 Tabular Index
The Tabular index function is the counterpart to the Tabular value
function. The input value is sorted into a parameterizable numerical
table, which must be organized in order of increasing values, and
the number of the tabular entry is output.
If, for example, the first tabular entry is 4 and the second is 7.8, then
a 0 will be output for all input values less than 0, the value 1 will be
output for all values between 4 and 7.8, and the value 2 for all
values greater than 7.8.
The table is defined using the Table parameter. Each value must
have a line of its own at the time of entry. 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.
This function can be used for flexible range definition. Thus, for
example, limit values can be defined in the table when a value is
normal, suspicious, critical and very critical.
Inputs: x:
Value in the table
(Numerical).
Outputs: y: Index of the value / Value range (Numerical).
Parameters: p
1
:
Table
(values table)
7.4.11 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)