VEGA VEGAMET 391 With SIL qualification - Manual (Page 42)

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10 Maintenance and fault rectification
VEGAMET 391 • With SIL qualification
38704-EN-130228
10 Maintenance and fault rectification
10.1 Maintenance
If the instrument is used properly, no special maintenance is required
in normal operation.
10.2 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.
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
triggered. In case of an instrument defect or line break/shortcircuit, a
fault signal is also triggered.
The fault indication lights up in case of failure and the current output
as well as the relays react according to the configured fault mode. If
the fail safe relay was configured, it will deenergize. In addition, one of
the following error messages is outputted on the display.
Error code Cause Rectification
E012 Hardware error, sen-
sor input
– Switch the instrument off and on
– Send instrument for repair
E014 Sensor current
> 21 mA or short-
circuit
– Check sensor, e.g. on failure
– Remove short-circuit
Reaction when malfunc-
tions occur
Failure reasons
Fault rectification
24 hour service hotline
Fault message