VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) Profibus PA - Manual (Page 49)

8 Maintenance and fault rectification
8.1 Maintenance, cleaning
When used in the correct way, no special maintenance is required in
normal operation.
In some applications, buildup on the antenna system can influence the
measuring result. Depending on the sensor and application, make
arrangements to avoid strong pollution of the antenna system. If
necessary, clean the antenna system in certain intervals.
8.2 Remove interferences
The 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 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 these 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.
? When an additional instrument is connected, the segment fails.
l Max. supply current of the segment coupler exceeded
à Measure the current consumption, reduce size of segment
? Wrong presentation of the measured value in Simatic S5
l Simatic S5 cannot interpret the number format IEEE of the
measured value
à Insert converting component from Siemens
Reaction when malfunc-
tions occur
Causes of malfunction
Fault rectification
24 hour service hotline
Checking Profibus PA
VEGAPULS 68 • Profibus PA 49
8 Maintenance and fault rectification
29263
-EN
-090305