SICK LFP Inox, Руководство по эксплуатации

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O P E R AT I N G I N S T R U C T I O N S | L F P I N OX 8019921/15H0 / 2019-09-30| S I C K A G
Irrtümer und Änderungen vorbehalten
5 1
11 TROUBLESHOOTING
11.3 Outputs
Error Cause Solution
Switching output
does not behave as
expected
Configuration incorrect Perform configuration of the switching output
(see “8.2 Configuring the switching outputs” ).
An error is pending; the sensor outputs are in the
safe state.
Remove the cause of the error
Cable break Check cable
Analog output does
not behave as
expected
Configuration incorrect Configure the analog output
(see “8.3 Configuring the analog output” ).
An error is pending; the sensor outputs are in the
safe state.
Remove the cause of the error
Cable break Check cable
11.4 Error behavior
Error Cause Solution
After installation, the sensor indicates a
high level although the tank is empty.
AutCal not performed Perform commissioning (see “7 Com-
missioning” ).
When used with a coaxial tube, the sen-
sor indicates a high level even though
the tank is empty.
AutCal not performed Perform commissioning (see “7 Com-
missioning” ).
Level value fluctuates on the display Medium surface unsettled Activate filtering (see “7.1 Quick com-
missioning (with factory settings)” ).
The displayed level value/SPx/RPx/FHx/
FLx/QALOW/QAHIGH is greater than the
probe length.
An offset was configured for the level
value
Adjust offset (see “8.4.13 Setting the
offset” ).
Incorrect probe length configured Adjust probe length (see “8.4.7 Config -
uring the probe length” ).
Level occasionally jumps to a higher
value
Contamination in the vicinity of the
process connection
Clean
Spray ball or feed wetting probe with
medium above the medium surface
Observe the installation conditions
Configure the MaxCoL plausibility filter
(see “8.4.2 Filtering measured values” ).
Change in the ambient conditions with
respect to the situation during the Aut-
Cal process
Perform commissioning again
(see
“7 Commissioning” ).
Significant buildup of foam Perform foam commissioning
(see
“7.3 Foam commissioning (with
factory settings)” ).
TrsHld set too low, echo algorithm de -
tecting interference reflections
Increase TrsHld
Level occasionally jumps to 0 mm TrsHld set too high Perform advanced commissioning
(see
“7 Commissioning” ).
Significant buildup of foam Perform foam commissioning
No measurement of low levels for media
with low DK values
Increased inactive range at the end of
the probe for media with a low DK
Increased measurement inaccuracy Use of foam algorithm