En - Trouble-Shooting - Endress+Hauser FTL325N Manual Del Operador

Fault Reason
Does not switch No power
(green LED does not light up)
Electronics are defective
Contacts welded together
(after short-circuit)
Measuring transmitter defective
Wrong signal input
Switches Inverted measuring transmitter function
incorrectly
Incorrect setting of change-over switch for
limit signal in FTL325N
Permanent Switch connected as measuring transmitter
alarm signal without current limiting resistors
Interrupt or short-circuit line to measuring
transmitter
Measuring transmitter electronics defective Replace measuring transmitter electronics
No sensor connected
Endress+Hauser
Remedy
Check power
Replace FTL325N
Replace FTL325N;
connect a fuse into contactor circuit
Replace measuring transmitter
Connect correct input
Invert output signal on measuring
transmitter (e. g. set minimum/maximum
safety circuit differently)
Correctly set change-over switch behind
front panel (p. 16, 23, 24...43)
Connect resistors or switch off alarm signal
(p. 8, 16, 25...43)
Check line
Switch off alarm signal for not used channel
(p. 16)

en - Trouble-shooting

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