BONFIGLIOLI active cube 201, Operating Instructions Manual

Page: 217 / 285

12/16 Operating Instructions ACU 217
Operation Mode Liquid Level 1, Parameter Operation Mode 440 = 2
This operation mode can be used, for example, for Liquid Level control.
If the actual value is missing, the function brings the output frequency to an adjustable value.
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 .
The Fixed Frequency
441 must be in the range between
Minimum Frequency
418 and
Maximum
Frequency
419 . If the
Fixed Frequency
441 is smaller than the
Minimum Frequency
418 , the
output frequency is guided to the
Minimum Frequency
418. The frequency will not drop below the
Minimum Frequency
418.
If the actual value is available again, the controller continues operation automatically. The integral
component is reset once the actual value is restored.
T
ec
h
n
o
lo
g
y
C
o
n
tr
o
ll
er
A
ct
.
Pe
rc
en
ta
ge
So
ur
ce
4
7
8
R
ef
.
P
er
ce
n
ta
g
e
C
h
an
n
el
R
ef
.
Pe
rc
en
ta
ge
So
ur
ce
4
7
6
M
in
im
u
m
v
al
u
e
>
0
.5
0%
P.
47
8
0.
50
%
<
A
m
pl
ifi
ca
tio
n
4
4
4
P
D
er
iv
at
iv
e
Ti
m
e
6
1
8
I
In
te
gr
al
T
im
e
4
4
5
+
+
-
M
ax
.
P
-C
o
m
p
o
n
en
t
Li
m
it
at
io
n
M
ax
.
I-
C
o
m
p
o
n
en
t
Fi
x
ed
Fr
eq
u
en
cy