SICK LFP CUBIC User Manual

OPERATING INSTRUCTIONS | LFP CUBIC 8019918/ZJA6 / 2017-07-20 | SICK AG
Subject to change without notice
54
11 TROUBLESHOOTING
11.3 Outputs
Error Cause Possible solution
Switching output
does not behave as
expected
Conguration incorrect. Perform conguration of the switching output
(See “8.2 Conguring the switching outputs”).
An error is pending; the sensor outputs are in
a safe state.
Remove the cause of the error.
Cable break. Check the cable.
Analog output does
not behave as
expected
Conguration incorrect. Congure the analog output
(See “8.3 Congure the analog output”).
An error is pending; the sensor outputs are in
a safe state.
Remove the cause of the error.
Cable break. Check the cable.
11.4 Error behavior
Error Cause Possible solution
After installation, the sensor indicates
a high level although the tank is empty.
AutCal not performed. Perform commissioning
(see “7 Commissioning”).
When used with a coaxial tube,
the sensor indicates a high level al-
though the tank is empty.
AutCal not performed. Perform commissioning
(see “7 Commissioning”).
Level value uctuates on the display. Medium surface unsettled. Activate ltering (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 oset was congured for the level
value.
Adjust the oset
(see “8.4.13 Setting the oset”).
Incorrect probe length congured. Adjust the probe length
(see “8.4.7 Conguring the probe
length”).
Level occasionally jumps to a higher
value.
Contamination in the vicinity of the
process connection.
Cleaning.
Spray ball or supply system wets the
probe with medium above the medium
surface.
Observe the installation conditions
Congure the MaxCoL plausibility lter
(see “8.4.2 Filtering measured values”).
Change in the ambient conditions
regarding the situation during the AutCal
process.
Perform commissioning again
(See “7 Commissioning”).
Signicant buildup of foam. Perform foam commissioning
(See “7.3 Foam commissioning (with
factory settings)”).
TrsHld set too low, the echo algorithm
detects interference reections.
Increase TrsHld.
Level occasionally jumps to 0 mm. TrsHld set too high. Perform advanced commissioning
(See “7 Commissioning”).
Signicant buildup of foam. Perform foam commissioning.
No measurement of low levels for media
with low DKs.
Increased inactive range at the probe
end for media with a low DK.
Increased measurement inaccuracy. Use of foam algorithm.

SICK LFP CUBIC Specifications

General

Brand	SICK
Model	LFP CUBIC
Category	Measuring Instruments
Language	English