VEGA VEGAPULS SR 68 Foundation Fieldbus - Manual (Page 61)

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9 Diagnosis, Asset Management and service
VEGAPULS SR 68 • Foundation Fieldbus
38297-EN-130624
9.4 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The first measures are:
•
Evaluation of fault messages, for example via the display and
adjustment module
•
Checking the output signal
•
Treatment of measurement errors
Further comprehensive diagnostics options offer a PC with the soft-
ware PACTware and the suitable DTM. In many cases, the reasons
can be determined in this way and faults can be rectified.
The below tables show typical examples for application-relevant
measurement errors with bulk solids. There are two measurement
errors:
•
Constant level
•
Filling
•
Emptying
The images in column "Error pattern" show the real level with a bro-
ken line and the level displayed by the sensor as a continuous line.
1
2
Level
time 0
1 Real level
2 Level displayed by the sensor
Notes:
•
Wherever the sensor displays a constant value, the reason could
also be the fault setting of the current output to "Hold value"
•
In case of a too low level indication, the reason could be a line
resistance that is too high
Reaction when malfunc-
tions occur
Procedure for fault recti-
fication
Treatment of measure-
ment errors with bulk
solids