PDU–4xx–W
©
Dinel, s.r.o.
36
User defined characteristic
User defined characteristic is defined as set of X-Y points. Number of the points is variable and may
be set from 2 to 20 points which make linear segments (see graph and see
Menu ”inPt”
).
Due to the normalized result In , the device computes specific segment, e.g. for characteristic from
figure below, and In = 0,65 the segment between points X =
”50.0.”
and X =
”70.0.”
will be chosen.
Let's mark those points as PL (point low) i PH (point high) - in this example PL=
“50.0,”
and PH =
“70.0.”
, and the normalized result In for the point PL as Ip (in this example Ip = In(PL) = 0,5). The
displayed result is calculated accordingly to the expression:
Fig.. 23 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic
Input current [mA]
Input current [mA]
Displayed
value
Displayed
value
Figure 24: Example of user defined characteristic
Normalized measurement In (for 0-20 mA range)
Input current [mA]
Displayed
value
5-elements characteristic
