Leuze electronic MLC 500 Original Operating Instructions page 51

Error
E23
E24
E30
E31
E37
E38
E39
E41
E80 ... E86
E87
E90
Leuze electronic
Cause/description
Interference detected on plug
pin 4. Signal output: output sig-
nal is not equal to the signal in-
put read-back value: it
switches simultaneously with
the other signal line.
Interference detected on plug
pin 8. Signal output: output sig-
nal is not equal to the signal in-
put read-back value: it
switches simultaneously with
the other signal line.
EDM does not open
EDM does not close
EDM operating mode changed
during operation
Restart interlock operating
mode changed during opera-
tion
Actuation duration (2.5 min)
exceeded for reset button or
cable short circuited
Invalid change of operating
mode due to reversal of the
supply voltage polarity during
operation
Invalid operating mode due to
setting error, general operating
mode change
Operating mode changed
Faulty connection on HOST or
Middle Guest
Measures
Check the wiring.
Check the wiring.
Actuate the start button if avail-
able.
Actuate the start button if avail-
able.
Check the correctness of the se-
lected operating mode, correct the
operating mode if required, and
restart.
Check the correctness of the se-
lected operating mode, correct the
operating mode if required, and
restart.
Press the reset button. If the
restart is unsuccessful, check the
wiring of the reset button.
Check the wiring and programming
of the device which controls this
signal.
E.g. reset button pressed during
start-up, check the circuit diagram
and the wiring and restart.
Check the wiring. Restart the sen-
sor.
Check connection, e.g., connect
terminating plug
MLC 520 Host/Guest
Troubleshooting
Sensor behavior
Automatic reset
Automatic reset
Locking
Locking
Locking
Locking
Automatic reset
Locking
Locking
Locking
Locking
51