Operation Troubleshooting - Siemens SITRANS LR260 Operating Instructions Manual

Code /
Icon
S: 52 Fail-safe is activated. Possible
causes: 1) hardware failure; 2)
memory failure; 3) Fail-safe LOE
timer expired – possible causes:
faulty installation, antenna material
buildup, foaming/other adverse pro-
cess conditions, invalid calibration
range.
S: 53 * Configuration lost: one or more
parameter settings have been lost.
This may occur after a firmware
upgrade causes user parameters to
be reset.

Operation Troubleshooting

Operating symptoms, probable causes, and resolutions.
Symptom
Display shows
S: 0 LOE
Display shows
S: 0 LOE
Display shows
S: 0 LOE
Display shows
S: 0 LOE
7ML19985KE03
General Fault Codes (Continued)
Meaning
Cause
level or target is out of
range
material build-up on
antenna
location or aiming:
• poor installation
• flange not level
antenna malfunction:
• temperature too high
• physical damage
SITRANS LR260 (HART) – INSTRUCTION MANUAL
Corrective Action
For 3): Correct configuration; ensure
installation is correct; no antenna
material buildup; adjust process
conditions to minimize foaming/
other adverse conditions; correct
calibration range. If fault persists, or
for 1) and 2), contact your local Sie-
mens representative.
Restore user parameters using
SIMATIC PDM.
Action
• check specifications
2.2. 1 .6. Low Calibration Pt.
• check
(LOW CALIB. PT.)
2.2.4.5.1. Echo Confidence
• increase
• clean the antenna
• re-locate SITRANS LR260
• check to ensure nozzle is vertical
2.2.5.2. Auto False Echo
• use
Suppression
and check
Suppression Range
protrudes from end of vessel nozzle.
3.14. 1 . Current Internal
• check
Temperature (CURR. INTERN.
TEMP.)
• relocate
2.2.5.3. Auto
to ensure nozzle
Page 93