Siemens LR 460 User Manual
Page B-80
SITRANS LR 460 – INSTRUCTION MANUAL
7ML19985JM01
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mmmm
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General Fault Codes/PROFIBUS PA Extended
Diagnostics
Diagnostics
Note:
Some faults cause the device to go to Fail-safe mode. These are indicated with
an asterisk (*).
LCD
display
display
Meaning
Corrective Action
Byte
Bit
S:0
*
Loss of Echo (LOE) condition:
the device was unable to get
a measurement within the
Fail-safe timer period.
Possible causes: faulty
installation, material buildup,
and/or presence of foam.
the device was unable to get
a measurement within the
Fail-safe timer period.
Possible causes: faulty
installation, material buildup,
and/or presence of foam.
Ensure installation details
are correct. Ensure no
material buildup. Adjust
process conditions to
minimize foaming. If problem
persists, contact your local
Siemens representative.
are correct. Ensure no
material buildup. Adjust
process conditions to
minimize foaming. If problem
persists, contact your local
Siemens representative.
0
0
S:2
*
Internal electronics failure.
Reset power. If fault persists,
contact your local Siemens
representative: repair
required.
contact your local Siemens
representative: repair
required.
2
S:3
Device is nearing its lifetime
limit according to the value
set in Maintenance Required
Limit.
limit according to the value
set in Maintenance Required
Limit.
Replacement is
recommended.
recommended.
3
S:4
Device is nearing its lifetime
limit according to the value
set in Maintenance
Demanded Limit.
limit according to the value
set in Maintenance
Demanded Limit.
Replacement is
recommended.
recommended.
4
S:6
Sensor is nearing its lifetime
limit according to the value
set in Maintenance Required
Limit.
limit according to the value
set in Maintenance Required
Limit.
Replacement is
recommended.
recommended.
6
S:7
Sensor is nearing its lifetime
limit according to the value
set in Maintenance
Demanded Limit.
limit according to the value
set in Maintenance
Demanded Limit.
Replacement is
recommended.
recommended.
7