Pepperl+Fuchs Vibracon LVL-M1H Bedienungsanleitung Seite 53

e Trouble-shooting
Fault Reason
Does not switch No power
Faulty signal line
Faulty eletronic insert
• AC (FEL51) connected directly to L1
and N
Density of liquid too low
Fork encrusted
Fork corroded
(Inication on Output: red/yellow
flashes, N2 (FEL58): green flashes 0.3
Hz)
AC (FEL51):
AC (FEL51):
WA (FEL54):
Switches Min-/Max-fail-save mode set wrongly
incorrectly
Sporadic faulty Thick heavy foam, very turbulent
switching conditions, foaming liquid
Extreme RFI
Extreme vibration
Water in housing
E5 (FEL52):
Remedy
Check power
Check signal line
Exchange
• always connect AC (FEL51) via
external load
Set density to > 0.5 at electronic insert
Clean fork
Exchange fork and process connection
Internal resistance of Connect suitable relay
connected relay too
large
Holding current of Connected resistor in parallel with
connected relay too low relay
Contacts welded Exchange WA (FEL54); put fuse in
together (after short- contact circuit
circuit)
Set correct mode at electronic insert
Mount Vibracon in bypass
Use screened cable
Decouple, damp, turn fork 90°
Screw cover and cable gland tight
Output overloaded Reduce load, (cable) capacitance
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