Siemens 7ML5431 - General Fault Codes

Diagnosing and troubleshooting
10.3 General fault codes
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
169
10.3 General fault codes
Note
•
If more than one fault is present, the device status indicator and text for each fault
alternate at 2 second intervals.
•
Some faults cause the device to go to Fail-safe mode (Fault 52). These
are indicated with
an asterisk (*).
Code/
Icon
Meaning
Corrective Action
S: 0
* The device was unable to get a measurement
within the Fail-safe LOE Timer period. Possible
causes: faulty installation, antenna material
buildup, foaming/other adverse process condi-
tions, invalid configuration range.
• Ensure installation details are correct.
• Ensure no antenna material buildup. Clean if neces-
sary.
• Adjust process conditions to minimize foam or other
adverse conditions.
• Correct configuration range.
• If fault persists, contact your local Siemens repre-
sentative.
S: 2
* Unable to collect profile because of a power
condition that is outside the operating range of
the device.
Repair required: contact your local Siemens representa-
tive.
S: 3
Device is nearing its lifetime limit according to
the value set in Maintenance Required Limit.
Replacement is recommended
S: 4
Device is nearing its lifetime limit according to
the value set in Maintenance Demanded Limit.
Replacement is recommended.
S: 6
Sensor is nearing its lifetime limit according to
the value set in Maintenance Required Limit.
Replacement is recommended.
S: 7
Sensor is nearing its lifetime limit according to
the value set in Maintenance Demanded Limit.
Replacement is recommended.
S: 8
Service interval as defined in Maintenance
Required Limit has expired.
Perform service.
S: 9
Service interval as defined in Maintenance
Demanded Limit has expired.
Perform service.