MLD 500

Single Light Beam Safety Devices


MLD 500 - Single Light Beam Safety Devices
CE TÜV NRTL US

If there are no plane attachment areas on the machine that are suitable for the mounting of Multiple Light Beam Safety Devices or when variable beam distances are required, it is not possible to use Multiple Light Beam Devices in the standard profile. In these cases, the single light beam device versions of the MLD series may be used. Even in the case of edges in the attachment geometries, these devices do not give rise to unmonitored undercuts.

Like the multiple light beam MLD versions, the MLD Single Light Beam Safety Devices feature individual function classes. This permits start/restart interlock and contactor monitoring to be selected and, if necessary, various muting modes may be implemented.

The series is predestined for wide-area perimeter guarding implemented with Deflecting Mirrors. Ranges of up to 100 m and operating temperatures down to -30°C are possible.

Even for the MLD Single Light Beam Safety Devices, the optional integrated laser alignment aid can contribute significantly to a much simplified alignment in case of long ranges.


Special features
  • The configuration is simply performed by means of wiring, i. e. no software, PC or DIP switch are necessary

  • The use at ambient temperatures as low as -30 ° C is possible

  • Options: integrated laser alignment aid, integrated muting indicator, 7-segment display

  • Integrated muting function, no additional muting module is necessary


Important technical data, overview
Type in accordance with IEC/EN 61496 4
SIL in accordance with IEC 61508 and SILCL in accordance with IEC/EN 62061 3
Performance Level (PL) in accordance with EN ISO 13849-1 e
Category in accordance with EN ISO 13849 4
Number of beams 1
Range (type-dependent) MLD5yy-R /-T: 0.5...70 m
MLD5yy-xR /-xT: 20...100 m
Profile cross-section 52 mm x 65 mm
Safety-related switching outputs (OSSDs) 2 PNP transistor outputs
Connection system M12 plug

Functions MLD 510 MLD 520 MLD 530
Automatic start/restart

Start/restart interlock (RES), selectable  

Contactor monitoring (EDM), selectable  

2-sensor muting, (parallel, sequential)    

Configurable operating modes  

Laser alignment aid (optional)