VEGA VEGAMET 514V - Manual (Page 39)

VEGAMET 514V 39
Settings in the "extended menu“
Tendency determination
The level change within the cycle time (ta) is determined and after all cycles (n) an average
value is generated from the sum of the level changes. If this average value exceeds a previ-
ously defined % value, the tendency determination responds, i.e. an energised relay
deenergises. With the selection "Tendency rising“ or "Tendency falling“ the menu items "Devia-
tion in %“ and "Deviation per time“ are activated.
– – Mode Tendency rising
The relay deenergises when the
rising average value of "t tot.“
exceeds the previously defined %
value.
Tendency falling
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 4 min. each the average value of the
deviation is generated and the result is com-
pared with the given deviation in %, here in the
example = 2 %
d
t
%
4 n=4
t a
t ges.
3 2 1
b z
Relay output
ta = cycle time
n = number of cycles
d
t
%
4 n=4
t a
t ges.
3 2 1 b z
Relay output
ta = cycle time
n = number of cycles