VEGA VEGAMET 614 - Manual (Page 35)

VEGAMET 614 35
Settings in the "Extended menu“
Tendency determination
The level change within the cycle time (ta) is determined and after completion of all cycles (n),
an average value is generated out of the sum of the level changes. If this average value ex-
ceeds a previously defined % value, the tendency determination responds, i.e. an energised
relay deenergises. If "Rising tendency“ or "Falling tendency“ are selected, the menu items
"Deviation in %“ and "Deviation per time“ are activated.
– – Mode Rising tendency
The relay deenergises when the
rising average value of "t tot.“
exceeds the previously defined %
value.
Falling tendency
same dependence, however with
falling average value
– – Deviation in % 2 If the level change exceeds the % value set
here, the tendency determination responds.
0 … 110 %
Example 2 % (change) per t tot.
– – Deviation per time
– – Cycle time
in s 60 Adjustment range 0 … 999 s
Example 60 s correspond to 1 minute
– – Number of
cycles 4 Adjustment range 0 … 99 cycles
Example: t tot = ta • n = 60 • 4 = 240 s = 4 min,
i.e. after every 4 min., the average value of the
deviation is generated and the result is com-
pared with the given deviation in %, here in the
example = 2 %
t
%
4 n=4
t a
t ges.
3 2 1
Relay output
ta = cycle time
n = number of cycles
t
%
4 n=4
t a
t ges.
3 2 1
Relay output
ta = cycle time
n = number of cycles