7
M
aintenance and fault recti
fi
cation
7
.
1
M
aintenance
W
hen used in the correct way
,
no special maintenance is required in
normal operation
.
7
.
2
R
emove interferences
A
maximum of reliability is ensured
.
N
evertheless
,
faults can occur
during operation
.
T
hese may be caused by the following
,
e
.
g
.:
l
M
easured value from sensor not correct
l
P
ower supply
l
I
nterference on the cables
T
he
fi
rst measure to be taken is to check the input and output signals
.
T
he procedure is described as follows
.
I
n many cases the causes can
be determined this way and faults can be easily recti
fi
ed
.
H
owever
,
should these measures not be successful
,
call the
VEGA
service hotline in urgent cases under the phone no
.
+
49 1805 858550
.
T
he hotline is available to you
7
days a week round
-
the
-
clock
.
S
ince
we o
ff
er this service world
-
wide
,
the support is only available in the
E
nglish language
.
T
he service is free of charge
,
only the standard
telephone costs will be charged
.
?
T
he red failure control lamp
(
LED
)
of the signal conditioning
instrument lights
l
S
ensor not connected correctly
à
C
heck the electrical connection by means of the wiring plans
l
L
ine break
à
C
heck the electrical connection cables from the probe to the
signal conditioning instrument
l
R
esistance for line monitoring missing
à
C
heck if a
220
k
Ω
resistor is mounted in the sensor housing
between terminals
1
and
2
or if the respective bridge to the
fault message adjustment on the signal conditioning instru
-
ment is present
.
à
Y
ou can
fi
nd further information in chapter
"
S
et up
-
F
ailure
adjustment
,
bridge
"
.
I
n
E
x systems
,
make sure that the
E
x protection is not in
fl
uenced by the
measuring instruments used
.
C
auses of malfunction
F
ault recti
fi
cation
24
hour service hotline
F
ailure
26
VEGATOR
631
E
x
•
S
ignal conditioning instrument
7
M
aintenance and fault recti
fi
cation
23440
-
EN
-
090130
