32 Endress+Hauser
en - Trouble-shooting
Fault Reason Remedy
Does not switch No power Check power
Faulty signal line Check signal line
Faulty electronic insert Exchange
Density of bulk solids too low Set density to >200 g/l at
electronic insert; see page 19
Rod
encrusted Clean
rod
FEM24:
Contacts welded together
(after short-circuit)
Exchange FEM24;
put fuse in contact circuit
Switches incor-
rectly
Min-/Max-fail-safe mode set
wrongly
Set correct mode at electronic
insert
Sporadic
faulty switching
Extreme RFI Use screened cable
Extreme vibration Decouple sensor mechanically,
turn oscillating rod 90°
Water in housing Drain;
Screw cover and cable bushings
tight
FEM22: Output overloaded Reduce load, (cable) capacitance
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