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8 Diagnosis, asset management and service
VEGAPULS WL S 61 • 4 … 20 mA
54408-01-190806
Maintenance
Code
Text mes-
sage
Cause
Rectification
M500
Error during
the reset "de-
livery status"
The data could
not be restored
during the reset to
delivery status
Repeat reset
Load XML file with
sensor data into
the sensor
M501
Error in the
non-active li-
nearisation
table
Hardware error
EEPROM
Send instrument
for repair
M502
Error in the
diagnostics
memory
Hardware error
EEPROM
Send instrument
for repair
M503
Measu-
rement
reliability too
low
The echo/noise
ratio is too small
for reliable measu-
rement
Check installation
and process con-
ditions
Clean the antenna
Change polarisati-
on direction
M504
Error at a
device inter-
face
Hardware defect
Check connec-
tions
Send instrument
for repair
M505
No echo
available
Level echo can
no longer be de-
tected
Clean the antenna
Remove possible
false echoes
Optimize sensor
position and ori-
entation
8.4 Rectify faults
Reaction when malfunction occurs
The operator of the system is responsible for
taking suitable measures to rectify faults.
Fault rectification
The first measures are:
•
Evaluation of fault messages
•
Checking the output signal
•
Treatment of measurement errors
A smartphone/tablet with the VEGA Tools app or
a PC/notebook with the software PACTware and
the suitable DTM offer you further comprehen-
sive diagnostic possibilities. In many cases, the
causes can be determined in this way and the
faults eliminated.
4 … 20 mA signal
Connect a multimeter in the suitable measuring
range according to the wiring plan. The following
table describes possible errors in the current
signal and helps to eliminate them:
Error
Cause
Rectification
4 … 20 mA
signal not
stable
Fluctuating mea-
sured value
Set damping
4 … 20 mA
signal mis-
sing
Electrical connec-
tion faulty
Check connec-
tion, correct, if
necessary
Voltage supply
missing
Check cables for
breaks; repair if
necessary
Operating voltage
too low, load resis-
tance too high
Check, adapt if
necessary
Current sig-
nal greater
than 22 mA,
less than
3.6 mA
Sensor electro-
nics defective
Replace device or
send in for repair
depending on de-
vice version
Reaction after fault rectification
Depending on the reason for the fault and the
measures taken, the steps described in chapter
"
Setup
" must be carried out again or must be
checked for plausibility and completeness.
24 hour service hotline
Should these measures not be successful,
please call in urgent cases the VEGA service
hotline under the phone no.
+49 1805 858550
.
The hotline is also available outside normal
working hours, seven days a week around the
clock.
Since we offer this service worldwide, the
support is provided in English. The service itself
is free of charge, the only costs involved are the
normal call charges.
8.5 How to proceed if a repair is
necessary
You can find an instrument return form as
well as detailed information about the proce-
dure in the download area of our homepage:
www.vega.com. By doing this you help us carry
out the repair quickly and without having to call
