VEGA VEGAMET 514… D - Manual (Page 39)

VEGAMET 514… D 39
Set-up, parameter adjustment
Tendency determination
The level change within the scanning time (ta) is determined and after all scannings (n) an average value is
generated out of the sum of the level changes.
If this average value exceeds a previously defined %-value, the tendency determination responds, i.e. an
energized relay de-energizes.
With the enquiry of "Tendency rising" or "Tendency falling" the menu points "Deviation in %" and "Deviation per
time" are released.
–– Relay output 1 (continuation 2)
–– Kind Tendency rising
The relay of relay output 1 de-energizes,
when the increasing average value of
"t ges." exceeds the previously defined
%-value
Tendency falling
same function however with falling
average value
–– Deviation in %
2
The level change exceeds the adjusted %-value, the
tendency determination responds.
0 … 110 %
Example 2 % (modification) per t ges.
–– Deviation per time
–– Scanning time in s
60
Adjustment range 0 … 999 s
Example 60 s corresponds to 1 minute
–– Number of
scannings
4
Adjustment range 0 … 99 scannings
Example: t ges = ta • n = 60 • 4 = 240 s = 4 min, i.e.
after every 4 mins the average value of the deviation
is formed and the result is compared with the given
deviation in %, here in the example = 2%
d b z
t
%
1 2 3 4
ta
t ges.
n = 4
Relay outp.
ta = Scanning time
n = Number of scannings
d b z
t
1 2 3 4
ta
t ges.
n = 4
%
Relay outp.
ta = Scanning time
n = Number of scannings
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