Maintenance And Fault Rectification; Maintenance; Remove Interferences - VEGA VEGAMET 381 Betriebsanleitung

7 Maintenance and fault
rectification

7.1 Maintenance

If the instrument is used properly, no special
maintenance is required in normal operation.

7.2 Remove interferences

Failure reasons
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
l
Voltage supply
l
Interference on the cables
l
Fault rectification
The first measures to be taken are to check the
input/output signals as well as to evaluate the error
messages via the display. The procedure is
described below. In many cases, the causes can
be determined in this way and faults can be
rectified.
24 hour service hotline
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.
Fault message
The signal conditioning instrument and the
connected sensors are permanently monitored
during operation and the values entered during
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/short-
circuit, a fault signal is also triggered.
The fail safe relay deenergises in case of failure,
the failure indication lights and the current output
jumps to 22 mA. In addition, one of the following
fault messages is outputted on the display.
VEGAMET 381
Maintenance and fault rectification
?
E003
CRC error (error with self-check)
l
à
Carry out a reset
à
Send instrument for repair
?
E014
Sensor current > 21 mA or short-circuit
l
à
Check sensor, e.g. on failure
à
Remove short-circuit
?
E015
Sensor in boot phase
l
Sensor current < 3.6 mA or line break
l
à
Check sensor, e.g. on failure
à
Remove line break
à
Check connection of the sensor
?
E016
Empty/full adjustment reversed
l
à
Carry out a fresh adjustment
?
E017
Adjustment span too small
l
à
Carry out a fresh adjustment and increase
the distance between min. and max.
adjustment
?
E021
Scaling span too small
l
à
Carry out a fresh scaling, increase the
distance between min. and max. scaling.
?
E110
Relay switching points too close together
l
à
Increase the difference between the two
relay switching points
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