Maintenance And Fault Rectification; Maintenance; Rectify Faults - Vega VEGASCAN 693 Operating Instructions Manual

Reaction when malfunc-
tion occurs
Causes of malfunction
Fault rectification
24 hour service hotline
Status messages
Fault message
VEGASCAN 693 • 15-channel HART signal conditioning instrument
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.
Maximum 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 in 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 manned 7 days a week round-the-clock. Since we offer
this service worldwide, the support is only available in the English
language. The service is free, only standard call charges are incurred.
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.
1
Fig. 13: Pictographs of the status messages
1 Failure
2 Function check
3 Out of specification
4 Maintenance requirement
The signal conditioning instrument and the connected sensors are
permanently monitored during operation and the values entered dur-
ing parameter adjustment are checked for plausibility. If irregularities
occur or in case of incorrect parameter adjustment, a fault signal is
9 Maintenance and fault rectification
2 3 4
39