Error Messages 7-Segment Display - Leuze electronic MLC 520 EX Series Original Operating Instructions

Table 11.2:
LED State
LED1 OFF
Red
(7-segment display dur-
ing start-up: C1 or
C2 according to the
number of green LEDS
on the transmitter)
Red
(7-segment display dur-
ing start-up: C1 . LEDs
on transmitter: both
green)
Red
(7-segment display dur-
ing start-up: C2 . LED1
on transmitter: green)
Red, slowly flashing,
approx. 1 Hz
Red, flashing fast,
approx. 10 Hz
(7-segment display
F x y )
Green, slowly flashing,
approx. 1 Hz
LED2 Yellow
Yellow flashing
11.3

Error messages 7-segment display

Table 11.3:
Faults
F[No. 0-255]
OFF
E01
Leuze electronic
Receiver LED displays - causes and measures
Cause
Device failed
Alignment incorrect or
protective field inter-
rupted
Receiver is set on C1,
transmitter on C2
Receiver is set on C2,
transmitter on C1
External fault
Internal fault
Weak signal due to con-
tamination or poor align-
ment
Start/restart interlock is
locked and protective
field is free - ready for
unlocking
The control circuit is
open in operating
mode 1, 2 and 3
Messages of the 7-segment display (F: internal device error, E: external error, U: usage
info during application errors)
Cause/description
Internal fault
Very high overvoltage (
Cross connection between
OSSD1 and OSSD2
Measure
Replace the device.
Remove all objects from the protective field.
Align the transmitter and receiver to each
other or place blanked objects correctly con-
cerning size and position.
Set the transmitter and receiver on the
same transmission channel and align both
correctly.
Remove all objects from the protective field.
Align the transmitter and receiver to each
other or place blanked objects correctly con-
cerning size and position.
Check the connection of the cables and the
control signals.
If restart fails, exchange the device.
Clean the front screens and check the align-
ment of transmitter and receiver.
If there are no people in the danger zone,
operate the reset button.
Close the input circuit with the correct polar-
ity and timing.
Measures
In the event of an unsuccessful
restart, contact customer service.
40 V) Supply the device with the correct

voltage.
Check the wiring between OSSD1
and OSSD2.
MLC 520 EX
Troubleshooting
Sensor behav-
ior
Automatic reset
46