Device Description; Device Overview - Leuze electronic MLC 520 EX Series Original Operating Instructions

3

Device description

The safety sensors from the MLC 500 series are active opto-electronic protective devices. They satisfy the
following standards:
Type in accordance with EN IEC 61496
Category in accordance with EN ISO 13849
Performance Level (PL) in accordance with EN ISO 13849-1
Safety Integrity Level (SIL) in accordance with IEC 61508 and SILCL in
accordance with EN IEC 62061
The safety sensors of the MLC 520 EX2 series satisfy the ATEX requirements in accordance with
EN 60079-0, EN 60079-15, EN 60079-28 for category 3G as well as EN 60079-0 and EN 60079-31 for
category 3D.
The safety sensor consists of a transmitter and a receiver (see figure 3.1). It is protected against over-
voltage and overcurrent acc. to IEC 60204-1 (safety class 3). Its infrared beams are not influenced by
ambient light (e.g. welding sparks, warning lights).
3.1

Device overview

The series is characterized by three different receiver classes (Basic, Standard, Extended) with certain
features and properties (see table 3.1).
Table 3.1:
OSSDs (2x)
AS-i
Transmission chan-
nel changeover
LED indicators
7-segment display
Automatic start/
restart
RES
EDM
Linkage
Blanking
Muting
Scan mode
Range reduction
Test input
Leuze electronic
Device models in the series with specific features and functions
Transmitter
MLC 500 MLC 500/A MLC 502 MLC 510
MLC 501



Receiver
Basic
MLC 511


 
  


MLC 520 EX
Device description
MLC 500
4
4
e
3
Standard Extended
MLC 510/A MLC 520 MLC 530



 














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