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KFU 2-/4-
197
Operation mode filling level 2, parameter
Operation mode
440 = 3
This operation mode can be used, for example, for contents level control.
The minimum value monitoring prevents an acceleration of the drive if the actual
value is missing.
If the actual value is missing (< 0.5%) the output frequency is guided to the
Fixed
frequency
441
. This is done using the set
Deceleration (clockwise)
421
.
If there is no control deviation (actual value =reference value) or if the control devia-
tion is negative (actual value>reference value), the output frequency is guided to
Minimum frequency
418
.
This is done using the set
Deceleration (clockwise)
421
.
The drive accelerates as soon as an actual value is present again or the control de-
viation exceeds the positive
Hysteresis
443
. The drive stops as soon as the
the con-
trol deviation falls below the negative
Hysteresis
443
.
Minim
u
m valu
e
> 0.
50%
Ampli
fic
at
io
n
444
P
Diff
er
entia
l Ti
me
618
I
Int
eg
ra
l T
im
e
445
+
+
-
Ma
x. P-Compon
ent
Differen
ce
1
0
Max.
I-
Compo
n
ent
Te
chn
olo
gy
Cont
roll
er
Ac
t.
P
er
ce
nta
ge
So
ur
ce
47
8
Ref. P
ercentage
Channel
Re
f. P
erc
en
ta
ge
So
urce
476
P.
47
8
0.
50
%
<
Fi
xe
d
Fr
eq
uency
Li
mitat
ion