Leuze electronic MLC 520, Original Operating Instructions

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Device description
Leuze electronic MLC 520 EX 10
3 Device description
The safety sensors from the MLC 500 series are active opto-electronic protective devices. They satisfy the
following standards:
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: Device models in the series with specific features and functions
MLC 500
Type in accordance with EN IEC 61496 4
Category in accordance with EN ISO 13849 4
Performance Level (PL) in accordance with EN ISO 13849-1 e
Safety Integrity Level (SIL) in accordance with IEC 61508 and SILCL in
accordance with EN IEC 62061
3
Transmitter Receiver
Basic Standard Extended
MLC 500
MLC 501
MLC 500/A MLC 502 MLC 510
MLC 511
MLC 510/A MLC 520 MLC 530
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
