Leuze electronic MLC 520 EX Series User Manual

Rectifying the fault
Leuze electronic MLC 530 77
Table 11.2: Receiver LED displays - causes and measures
LED State Cause Measure
LED1 OFF Device failed Replace the device.
red
(7-segment display dur-
ing start-up: “C1” or
“C2” according to the
number of green LEDS
on the transmitter)
Alignment incorrect or
protective field inter-
rupted
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.
red
(7-segment display dur-
ing start-up: “C1”. LEDs
on transmitter: both
green)
Receiver is set on C1,
transmitter on C2
Set the transmitter and receiver on the
same transmission channel and align both
correctly.
red
(7-segment display dur-
ing start-up: “C2”.
(LED1 on transmitter:
green)
Receiver is set on C2,
transmitter on C1
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.
red, slowly flashing,
approx. 1 Hz
(7-segment display
“E x y”)
External fault Check the connection of the cables and the
control signals.
red, flashing fast,
approx. 10 Hz
(7-segment display
“F x y”)
Internal fault If restart fails, exchange the device.
green, slowly flashing,
approx. 1 Hz
Weak signal due to con-
tamination or poor align-
ment
Clean the front screens and check the align-
ment of transmitter and receiver.
LED2 yellow Start/restart interlock is
locked and protective
field is free - ready for
unlocking
If there are no people in the danger zone,
operate the reset button.
yellow flashing The control circuit is
open in operating
mode 1, 2 and 3
Close the input circuit with the correct polar-
ity and timing.
LED3 blue, quickly flashing Teaching error Re-teach the blanking areas. Depending on
the operating mode, object movements are
not permitted during teaching.
blue, very quickly flash-
ing
A muting restart is
required in operating
modes 4 and 6
Press the reset button to override the mut-
ing zone.
blue, very quickly flash-
ing
Teaching of blankings
still active
Press the teach button again.

Leuze electronic MLC 520 EX Series Specifications

General

Brand	Leuze electronic
Model	MLC 520 EX Series
Category	Lighting Equipment
Language	English