Siemens sitrans PROBE LU - Range and Window Parameters; Sampling Down and Window Settings; Near and Far Range Settings

A5E32337695 SITRANS Probe LU (HART) – OPERATING INSTRUCTIONS Page 85
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D: Troubleshooting
Operation Troubleshooting
Operating symptoms and probable causes.
1
Refer to P003 Measurement Response on page 32, or P070 Failsafe Timer on page 42, for
duration of `Waiting' periods.
S:51 * EEPROM corrupt. Repair required: contact your local
Siemens representative.
S:52 Failsafe is activated. Possible causes: 1)
hardware failure; 2) memory failure; 3)Fault 48;
4) failsafe timer expired– possible causes:
faulty installation, antenna buildup, foaming/
other adverse process conditions, invalid
calibration range.
For 3) and 4) Correct configuration;
ensure installation is correct; no
antenna buildup; adjust process
conditions to minimize foaming/
other adverse conditions; correct
calibration range. If fault persists,
or for 1) and 2), contact your local
Siemens representative.
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.
Restore user parameters using
SIMATIC PDM.
Symptom Meaning Probable cause
status symbol
flashes
Failsafe timer starts
running.
• material or object in contact with transducer face
• transducer face is too close to the fill point
• transducer face is not perpendicular to the liquid
surface
• change in level too fast
• measurement out of range
• foam on liquid surface
• high level of vibration in the mounting structure
• level inside the blanking zone
status symbol
does not flash,
and LOE
alternates
with reading
The `Waiting' period
has expired.
1.
For details on blanking, see Blanking Distance on page 89.
Code Meaning Corrective Action (cont’d)