User Manual

8 Maintenance and fault rectification
8.1 Maintenance
When used as directed in normal operation, VEGAPULS
68 is completely maintenance-free.
8.2 Fault rectification
VEGAPULS 68 offers maximum reliability. Nevertheless,
faults may occur during operation. These can have the
following causes, e.g.:
l Sensor
l Process
l Power supply
l Signal processing.
The first measures to be taken are to check the output
signal and evaluate fault messages via the adjustment
module PLICSCOM. The procedure is described below.
Further comprehensive diagnostics can be carried out
on a laptop with the software PACTware™ and the
suitable DTM. In many cases, the reasons can be
determined in this way and faults can be rectified.
Should these measures not be successful, please call in
urgent cases the VEGA service hotline under the phone
number [phone].
The hotline is available to you 7 days a week round-the-
clock. Since 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.
Connect a hand-held multimeter with a suitable measu-
ring range acc. to the wiring plan.
? 4 ... 20 mA signal is not stable
l level fluctuations
à set integration time via PLICSCOM or
PACTware™
Causes of failure
Fault rectification
24 hour service hotline
Checking the 4 ... 20 mA
signal
VEGAPULS 68 - 4 ... 20 mA/HART 45
Maintenance and fault rectification
29261-EN-050202