Leuze electronic MLC 520 EX Series User Manual

Functions
Leuze electronic MLC 530 26
MS1 Muting signal 1
MS2 Muting signal 2
PFF Protective field free
MUTE Bridging through muting
OSSD OSSD status
Figure 4.6: Timing controlled muting - timing
The material can move in both directions. Often, an arrangement consisting of crossed beams from Reflec-
tion Light Beam Devices is used (see chapter 6.2 „Arrangement of the muting sensors“).
Timing controlled muting is used in the following cases:
• Moving-in applications: light scanners in the danger zone detect the muting object through the pro-
tective field. The scanning range must be set to a sufficiently small value (see chapter 6.2.4
„Arrangement of the muting sensors for timing controlled 2-sensor muting“).
• Exit applications: a Light Beam Device in the danger zone works diagonally to the transport direction
together with a simultaneously activated PLC signal, which derives from the drive of the transport
equipment, for instance (see chapter 6.2.5 „Arrangement of the muting sensors for timing controlled
2-sensor muting especially for exit applications“).
As a rule, the protective function of the entire protective field is deactivated during timing controlled muting.
However, the following types of operation are possible:
• Partial muting, i.e. the last beam permanently remains active (see chapter 4.8.1 „Partial muting“).
Activating timing controlled muting
 Activate timing controlled muting by selecting operating mode 4 or 6 (see chapter 7 „Electrical
connection“).
If muting was properly activated, it remains active even during brief interruptions of each single sensor
signal (shorter than 0.3 s).
Muting is ended in the following cases:
• The signals of the two muting sensors are simultaneously inactive for a duration of more than 0.3 s.
• The signal of a muting sensor is inactive for a duration of more than 4 s.
• The muting time limit (10 min muting timeout) has elapsed.
DANGER
Risk of death if installation is not performed correctly!
 Follow the instructions for the correct arrangement of the muting sensors (see chapter 6.2).
Following malfunctions or operationally related interruptions (e.g. failure and restoration of the
supply voltage, violation of the concurrency condition during activation of the muting sensors),
the system can be manually reset with the reset button and overridden (see chapter 4.8.3
„Muting override“).
MS1
MS2
< 4s
< 0,3 s
MUTE
OSSD
PFF
< 4s
> 4s

Leuze electronic MLC 520 EX Series Specifications

General

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