Hauser
53
Fault
Reason
Remedy
Does not
switch
No power
(green LED does not light up)
Check power
Electronic defect
Replace FTL325N
Contacts welded together
(after short-circuit)
Replace FTL325N;
connect a fuse into contactor circuit
Measuring transmitter defective Replace measuring transmitter
Wrong signal input
Connect correct input
Switches
incorrectly
Inverted measuring transmitter
function
Invert output signal on measuring
transmitter, e. g. set minimum/
maximum safety circuit differently
Incorrect setting of change-over
switch for limit signal in FTL325N
Correctly set change-over switch
behind front panel, p. 118, 19,
27...49
Permanent
alarm signal
Switch connected as measuring
transmitter without current
limiting resistors
Connect resistors or switch off
alarm signal, p. 8, 18, 19, 27...49
Interrupt or short-circuit line to
measuring transmitter
Check line
Measuring transmitter electronics
defective
Replace measuring transmitter
electronics
No sensor connected
Switch off alarm signal for not used
channel, p. 18
FTL325N defective
Replace FTL325N
en -Trouble-shooting