Leuze electronic MLC 520 EX Series - Page 48

Troubleshooting
Leuze electronic MLC 520 EX 48
E23 Interference detected on plug
pin 4. Signal output: output signal
is not equal to the signal input
read-back value: it switches simul-
taneously with the other signal
line.
Check the wiring. Automatic reset
E24 Interference detected on plug
pin 8. Signal output: output signal
is not equal to the signal input
read-back value: it switches simul-
taneously with the other signal
line.
Check the wiring. Automatic reset
E30 EDM does not open Actuate the start button if avail-
able.
Locking
E31 EDM does not close Actuate the start button if avail-
able.
Locking
E37 EDM operating mode changed
during operation
Check the correctness of the
selected operating mode, correct
the operating mode if required, and
restart.
Locking
E38 Restart interlock operating mode
changed during operation
Check the correctness of the
selected operating mode, correct
the operating mode if required, and
restart.
Locking
E39 Actuation duration (2.5 min)
exceeded for reset button or cable
short circuited
Press the reset button. If the
restart is unsuccessful, check the
wiring of the reset button.
Automatic reset
E41 Invalid change of operating mode
due to reversal of the supply volt-
age polarity during operation
Check the wiring and programming
of the device which controls this
signal.
Locking
E80 … E86 Invalid operating mode due to set-
ting error, general operating mode
change
E.g. reset button pressed during
start-up, check the circuit diagram
and the wiring and restart.
Locking
E87 Operating mode changed Check the wiring. Restart the sen-
sor.
Locking
Faults Cause/description Measures Sensor behav-
ior