Krone OPTISOUND 3030 C, Handbook

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37
7 Maintenance and fault rectification
OPTISOUND 3030 C • Foundation Fieldbus
51118-EN-210701
7 Maintenance and fault rectification
7.1 Maintenance
If the device is used properly, no special maintenance is required in
normal operation.
The cleaning helps that the type label and markings on the instrument
are visible.
Take note of the following:
•
Use only cleaning agents which do not corrode the housings, type
label and seals
•
Use only cleaning methods corresponding to the housing protec-
tion rating
7.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The device offers maximum reliability. Nevertheless, faults can occur
during operation. These may be caused by the following, e.g.:
•
Sensor
•
Process
•
Voltage supply
•
Signal processing
The first measures to be taken are to check the output signal and
evaluate fault messages via the display/adjustment module. The
procedure is described below.
The following table describes possible errors and helps to remove
them:
Error Cause Rectification
When an additional instru-
ment is connected, the H1
segment fails.
Max. supply current of
the segment coupler ex-
ceeded
Measure the current consumption, reduce size of seg -
ment
Measured value on the
display and adjustment
module does not corre-
spond to the value in the
PLC
The menu item " Display -
Display value " is not set to
" AI-Out "
Check values and correct, if necessary
Instrument does not ap-
pear during connection
setup
Profibus DP cable pole-
reversed
Check cable and correct, if necessary
Incorrect termination Check termination at the beginning and end points of
the bus and terminate, if necessary, according to the
specification
Instrument not connected
to the segment
Check and correct, if necessary
Maintenance
Cleaning
Reaction when malfunc-
tion occurs
Causes of malfunction
Fault rectification
Checking Foundation
Fieldbus