Leuze electronic MLC 520 EX Series User Manual

Mounting
Leuze electronic MLC 530 44
6.2.4 Arrangement of the muting sensors for timing controlled 2-sensor muting
When doing so, both the MS1 and MS2 sensors must be arranged so that they can be activated simulta-
neously within 4 s by the transport material but cannot be simultaneously activated by a person within this
time. Arrangements with crossed beams are often used. The intersection point is located here within the
danger zone. This prevents muting from being triggered unintentionally. With this arrangement, an object
can be transported through the protective field in both directions.
1 Danger zone
2 Receiver
3 Transmitter
MS1 Muting sensor 1
MS2 Muting sensor 2
S1 Minimum distance between the protective field of the AOPD and the detection points of the muting-
sensor light beams
a,b Distance between muting object and other fixed edges or objects (<200 mm)
d Distance from the intersection point of the muting-sensor light beams to the protective-field plane
(<50 mm)
Figure 6.6: Typical arrangement of the muting sensors for timing controlled 2-sensor muting (example
acc. to IEC TS 62046)
With timing controlled 2-sensor muting, the beams from the muting sensors should intersect behind the
protective field of the safety sensor, i.e. within the danger zone, to prevent muting from being triggered
unintentionally.
Distances a and b between fixed edges and the muting object (e.g. transport material) must be such that
a person cannot enter through these openings undetected while the pallet passes through the muting
zone. However, if it is assumed that persons are located here, the risk of crushing must be prevented, e.g.
with wicket gates, which are integrated electrically into the safety circuit.
Minimum distance S
S [mm] = Minimum distance between the protective field of the AOPD and the detection points of
the muting-sensor light beams
v [m/s] = Speed of the material
Distance d should be as small as practical
Arrangement of light scanners
An additional option for arranging the muting sensors is shown in the following figure. The light scanners
are arranged and set within the danger zone so that their scanning points detect a valid, approaching
Muting accessories from Leuze electronic, for example Muting Sensor Sets and matching Device
Columns, facilitate the installation of muting applications significantly.
d [mm] = Distance from the intersection point of the muting-sensor light beams to the
protective-field plane < 200 mm
a
b
MS2
MS1
1
2
3
4
a
b
S
MS2
MS1
1
2
3
4
d

Leuze electronic MLC 520 EX Series Specifications

General

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