Endress+Hauser FTL 325 P Serie Manual Del Usuario página 50

e Trouble-shooting
50
Fault Reason
Does not switcht No power
(green LED does not light up)
Elektronik defekt
Contacts welded together
(after short-circuit)
Measuring transmitter
defective
Switches Incorrect setting of
incorrectly change-over switch for
limit signal in FTL 325 P
Permanent Interrupt or short-circuit line to
alarm signal measuring transmitter
Measuring transmitter
electronics defective
Switches FEL 57,
incorrectly after Behaviour during switch-on
power failure test
(functional test)
Remedy
Check power
Replace FTL 325 P
Replace FTL 325 P;
connect a fuse into contactor
circuit
Replace measuring transmitter
Correctly set change-over
switch behind front panel
(p. 15...19)
Check line
Replace measuring transmitter
electronics
Observe switching behaviour
of FEL 57;
after power failure block plant
control for up to 45 s
Endress+Hauser