A
function test can be carried out for measurement setups in
conjunction with the
NAMUR
electronics module
VB
60
N
.
F
or this
purpose
,
the switching delay must be set to
0
.
5
s
.
LBV
321
has an
integrated simulation key
.
T
he simulation key is lowered on the
electronics module
.
P
ush the simulation key for
>
2
seconds
.
I
f
LBV
321
is connected to an
SPLC
,
you have to interrupt the
connection cable to the sensor for
>
2
seconds
.
A
fter releasing the simulation key or brie
fl
y interrupting the connection
cable to the sensor
,
you can check the complete measuring system on
correct function
.
A
switching procedure is simulated during the test
.
2,2
I/mA
1
3
4,5
t/s
1
2
F
ig
.
22
:
F
low chart of the function test
1
F
ull signal
2
E
mpty signal
C
heck if all the switching conditions occur in the correct sequence and
the stated time period
.
I
f this is not the case
,
there is a fault in the
measuring system
.
K
eep in mind that connected instruments are
activated during the function test
.
T
his allows you to check the correct
function of the measuring system
.
(
after releasing the simulation key
)
S
ensor cur
-
rent
L
evel relay
ampli
fi
er
-
over
fl
ow
protection
L
evel relay
ampli
fi
er
-
dry run pro
-
tection
S
ignal lamp
ampli
fi
er
-
over
fl
ow
protection
S
ignal lamp
ampli
fi
er
-
dry run pro
-
tection
S
ignal lamp
-
sensor
1
.
L
ow
C
urrent
(
approx
.
3
s
)
approx
.
1
m
A
energized
currentless
S
imulation key on the
electronics module
T
est procedure
22
LBV
321
• -
NAMUR
6
S
et up
39163
-
EN
-
110621
Summary of Contents for LBV 321 NAMUR
Page 1: ...D F GB S B E T R I E B S A N L E I T U N G LBV 321 NAMUR...
Page 35: ...LBV 321 NAMUR 35 9 Anhang 39163 DE 110617...
Page 37: ...GB O P E R AT I N G I N S T R U C T I O N S LBV 321 NAMUR...
Page 48: ...d d d 10 d 10 Fig 3 Filling and emptying centred 12 LBV 321 NAMUR 4 Mounting 39163 EN 110621...
Page 71: ...LBV 321 NAMUR 35 9 Supplement 39163 EN 110621...
