Siemens 7ML1301-1, Instruction Manual, Page: 80 / 99

Page 76 SITRANS LG200 – INSTRUCTION MANUAL 7ML19985KA02
Tr
oubl
esho
ot
ing
Error Messages
Level reading on Dis-
play is stuck at full
scale, loop is stuck at
20.5 mA Software believes probe is
flooded (level very near top of
probe) Check actual level. If probe is
not flooded, check for buildup
or obstructions near top of
probe. Select higher dielectric
range. Check for condensation
in probe connection. Add
Blocking Distance.
Level, % Output, and
Loop values all at max-
imum level Possible configuration issue
with single rod probe 1. Increase Blocking Distance.
2. Increase Dielectric Range.
Level, % Output, and
Loop values all read-
ing high vs. actual Possible obstruction in tank
affecting single rod probe 1. Increase Dielectric Range
until obstruction is ignored.
2. Relocate probe away from
obstruction.
Level value reading
high when should be
zero Transmitter loose or discon-
nected from probe Ensure transmitter connected
securely to probe.
Display message Action Comment
OK None Normal Operating Mode
Initial None
Program is initializing, level reading
held at 4 mA setpoint. This is a tran-
sient condition
DryProbe None
Normal message for dry probe. End of
probe signal is being detected.
EOP Low
End of Probe signal from a
dry probe is out of range
• Ensure probe length is entered
correctly.
• Set transmitter to a lower dielectric
range.
EOP High
End of Probe signal is out of
range
• Ensure probe length is entered
correctly.
• Consult factory.
Lvl < PL Highest level signal
detected is below Probe
Length • Ensure probe length is entered
correctly.
EOP < PL End of Probe signal is
below Probe Length • Ensure probe length is entered
correctly.
WeakSgnl
None. Signal amplitude is
lower than desired
• Set transmitter to lower dielectric
range
• Increase sensitivity
Symptom Problem Corrective Action