Endress+Hauser Profi Bus Levelflex M FMP40 Operating Instructions Manual page 94

Trouble-shooting
94
Code Description
A261 HF cable defective
W275 Offset too high
W512 recording of mapping please
wait
W601 linearisation ch1 curve not
monotone
W611 less than 2 linearisation
points for channel 1
W621 simulation ch. 1 on
E641 no usable echo
channel 1
check calibr.
W650 Signal/noise ratio too low
or no echo
E651 level in safety distance - risk
of overspill
A671 linearisation ch1 not
complete, not usable
Possible cause
HF cable defective or HF connector
removed
Temperature at the electronics too high or
HF module defective
mapping active
linearization not monotonously increasing correct linearisation table
number of entered linearization points < 2 correct linearisation table
simulation mode is active
echo lost due to application conditions of
built up on antenna
noise on signal to high
level in safety distance
linearisation table is in edit mode
Levelflex M FMP40 PROFIBUS PA
Remedy
Check HF connector, replace cable
if defective
Check temperature, replace HF
module if defective
wait some seconds until alarm
disappears
switch off simulation mode
check installation;
clean probe (cf. Operating
Instructions)
eliminate electromagnetic
interference
alarm will disappear as soon as level
leaves safety distance
activate linearisation table
Endress+Hauser