Siemens Sitrans LR250 Operating Instructions Manual page 162

Acyclic Extended Diagnostics /General Fault Codes (cont'd)
LCD
Meaning (cont' d )
display
Sensor is nearing its lifetime
limit according to the value set
S:7
in Maintenance Demanded
Limit.
Service interval as defined in
Maintenance Required Limit
S:8
has expired.
Service interval as defined in
Maintenance Demanded Limit
S:9
has expired.
Input parameters High
Calibration Point and Low
S:10
Calibration Point are the same.
Internal temperature sensor
S:11
failure.
Internal temperature of the
device has exceeded
S:12 *
specifications: it is operating
outside its temperature range.
Upper and lower input values
(Process Value Scale) for AIFB1
S:14
are the same.
Upper and lower input values
(Process Value Scale) for AIFB2
S:15
are the same.
Page 156 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS
Corrective Action
Replacement is recommended.
Perform service.
Perform service.
• Check calibration settings of
device.
• Ensure settings for High Cali-
bration Point and Low Calibra-
tion Point are different.
Repair required. Contact your
local Siemens representative.
• Relocate device and/or lower
process temperature enough
to cool device.
• Inspect for heat-related dam-
age and contact your local Sie-
mens representative if repair is
required.
• Fault code will persist until a
manual reset is performed
using PDM or the LCD inter-
face.
• Check configuration for AIFB1.
• Ensure that Upper Value and
Lower Value (Process Value
Scale) are not the same.
• Check configuration for AIFB2.
• Ensure that Upper Value and
Lower Value (Process Value
Scale) are not the same.
Byte
Bit
(cont' d )
0
7
(cont' d )
0
1
3
4
1
5
6
7
7ML19985JF04