VEGA VEGASON 66 4 … 20 mA_HART four-wire - Manual (Page 42)

8 Maintenance and fault rectification
8.1 Maintenance
When used as directed in normal operation, VEGASON 66 is
completely maintenance free.
8.2 Fault rectification
VEGASON 66 offers maximum reliability. Nevertheless faults
can occur during operation. These may be caused by the
following, e.g.:
l
Sensor
l
Process
l
Power supply
l
Signal processing
The first measures to be taken are to check the output signals
as well as to evaluate the error messages via the indicating
and adjustment module. The procedure is described below.
Further comprehensive diagnostics can be carried out on a PC
with the software PACTware™ and the suitable DTM. In many
cases, the causes can be determined in this way and faults
can be rectified.
However, should this measures not be successful, call the
VEGA service hotline in urgent cases under the phone no. +49
1805 858550.
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 measuring
range according to the wiring plan.
?
4 … 20 mA signal not stable
l Level fluctuations
à Set integration time via the indicating/adjustment
module
Causes of malfunction
Fault rectification
24 hour service hotline
Checking the 4 … 20 mA sig-
nal
Maintenance and fault rectification
42 VEGASON 66 - 4 ... 20 mA/HART - four-wire
28783
-EN
-060731