VEGA VEGAPULS 62 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 50)

8 Maintenance and fault rectification
8.1 Maintenance
When used in the correct way, no special maintenance is required in
normal operation.
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 H1 segment fails.
l Max. supply current of the segment coupler exceeded
à Measure the current consumption, reduce size of segment
? Measured value on the indicating and adjustment module does not
correspond to the value in the PLC
l The menu item "Display - Display value" is not set to "AI-Out"
à Check values and correct, if necessary
? Instrument does not appear during connection setup
l Incorrect termination
à Check termination at the beginning and end points of the bus
and terminate, if necessary, according to the specification
l Instrument not connected to the segment
à Check and correct
Reaction when malfunc-
tions occur
Causes of malfunction
Fault rectification
24 hour service hotline
Checking Foundation
Fieldbus
50 VEGAPULS 62 • Foundation Fieldbus
8 Maintenance and fault rectification
28450
-EN
-090305