L
evel
S
ignal current
-
S
ensor
C
ontrol lamp
F
alling characteris
-
tics max
.
≥
2
.
4
m
A
F
alling characteris
-
tics max
.
≤
1
m
A
R
ising characteris
-
tics min
.
≥
2
.
4
m
A
R
ising characteris
-
tics min
.
≤
1
m
A
F
ailure
any
≤
1
m
A
fl
ashes
6
.
4
R
ecurring function test
A
ccording to
IEC
61508
.
LBV
321
is quali
fi
ed in mode
A
(
over
fi
ll protection
)
for use in measuring
chains of stage
SIL
2
according to
IEC
61508
(
redundant
,
stage
SIL
3
).
T
he following instrument combinations meet the requirements
according to
SIL
:
LBV
321
l
O
scillator
VB
60
N
T
he recurring test according to
IEC
61508
can be carried out by
pushing the simulation key on the electronics module or by brie
fl
y
(
>
2
seconds
)
interrupting the cable to the sensor
.
T
he correct sequence of
the switching conditions must be monitored via the switching ampli
fi
er
as well as the connected systems
.
T
he sensor must neither be
removed nor response must be triggered by
fi
lling the vessel
.
T
his
applies to
LBV
321
with
NAMUR
electronics module
VB
60
N
.
Y
ou can carry out the function test with the outputted current values
also directly via a safety
PLC
or a process control system
.
SIL
R
ecurring function test
LBV
321
• -
NAMUR
21
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...
