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