VEGA VEGAMET 391 4 … 20 mA_HART - Manual (Page 49)

49
9 Maintenance and fault rectification
VEGAMET 391 • 4 … 20 mA/HART
36032-EN-130701
9 Maintenance and fault rectification
9.1 Maintenance
If the instrument is used properly, no special maintenance is required
in normal operation.
9.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
A maximum of reliability is ensured. Nevertheless, faults can occur
during operation. These may be caused by the following, e.g.:
•
Measured value from sensor not correct
•
Voltage supply
•
Interference on the cables
The first measures to be taken are to check the input and output
signal as well as to evaluate the error messages via the display. The
procedure is described below. Further comprehensive diagnostics
can be carried out on a PC with PACTware and the suitable DTM. In
many cases, the causes can be determined in this way and faults
rectified.
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 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 the connected sensor is provided with a self-monitoring
according to NE 107, the probably occurring status messages are
passed on and outputted on the VEGAMET indication. Requirement
is that the HART input of the VEGAMET is activated. You can find
further information in the operating instructions manual of the sensor.
4 1 2 3
Fig. 20: Pictographs of the status messages
1 Failure
2 Function check
3 Out of specification
4 Maintenance requirement
Reaction when malfunc-
tions occur
Failure reasons
Fault rectification
24 hour service hotline
Status messages