VEGA VEGAWELL 72 4 … 20 mA - Manual (Page 23)

7 M aintenance and fault rectification
7 .1 Maintenance
W hen used in the correct way, no special maintenance is
required in normal operation.
7 .2 Remove interferences
T he operator of the system is responsible for taken suitable
measures to remove interferences.
A maximum of reliability is ensured. Nevertheless, faults can
occur during operation. These may be caused by the following,
e.g.:
l
S ensor
l
P
rocess
l
V oltage supply
l
S
ignal processing
T
he first measure to be taken is to check the output signal. In
many cases, the causes can be determined this way and the
faults rectified.
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 offer this service world-wide, the support is only
available in the English language. The service is free of
charge, only the standard telephone costs will be charged.
C
onnect a handheld multimeter in the suitable measuring
range according to the wiring plan.
? 4 … 20 mA signal not stable
l
no atmospheric pressure compensation
à Check the capillaries and cut them clean
à Check pressure compensation in VEGABOX 02, if
necessary clean filter element
? 4 … 20 mA signal missing
l
W
rong connection to power supply
à Check connection according to chapter "Connection
steps" and if necessary, correct according to chapter
"Wiring plan"
Reaction when malfunc-
tions occur
Causes of malfunction
Fault rectification
24 hour service hotline
Checking the 4 … 20 mA
signal
VEGAWELL 72 • 4 … 20 mA 23
7 M aintenance and fault rectification
27501
-
EN
-080806