SICK LBV 320, Руководство по эксплуатации

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L
evel
S
ignal current
-
S
ensor
C
ontrol lamp
F alling characteris
-
tics max
.
≤
1
m A
R ising characteris
-
tics min
.
≥
2
.
2
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
320
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 320
l
O scillator WE 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
320
with NAMUR electronics module WE
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
22
LBV
320
• -
NAMUR
6
S et up
35925
-
EN
-
091126