Leuze electronic MLC 500 Series, Безопасная эксплуатация и управление

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Device description
Leuze electronic MLC 520S 10
3 Device description
The safety sensors from the MLC 500 series are active opto-electronic protective devices. They satisfy the
following standards:
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 13849-1:2015 e
Safety Integrity Level (SIL) in accordance with IEC 61508 and SILCL in ac-
cordance with EN IEC 62061 3
The safety sensor consists of a transmitter and a receiver (see chapter 3.1 "Device overview of the MLC
family"). It is protected against overvoltage and overcurrent acc. to IEC 60204-1 (protection class 3). The
safety sensor is not dangerously influenced by ambient light (e.g., welding sparks, warning lights).
3.1 Device overview of the MLC family
The series consists of a transmitter and the corresponding receiver. An overview of the characteristic fea-
tures is given in the following table.
Tab. 3.1: Device models in the series with specific features and functions
Transmitter Receiver
MLC 520S MLC 520S
OSSDs (2x) ■
LED indicator ■ ■
Automatic start/restart ■
RES ■
EDM ■
Protective field properties
The beam distance and the number of beams are dependent on the resolution and protective field height.
Device synchronization
The synchronization of receiver and transmitter for creating a functioning protective field is done optically,
i.e. without cables, via one specially coded synchronization beam. The synchronization beam is the beam
closest to the cable connection. A cycle (i.e. a pass from the first to the last beam) is called a scan.
3.2 Connection technology
The transmitter and receiver feature cables with M12 connectors as an interface to the machine control
with the following number of pins:
Device model Device type Device plug
MLC 520S Transmitter/receiver 5-pin