IP67 Safety light grids MLD 300 / 500
The MLD 300 / 500 safety light grids from Leuze guard access at industrial machines and systems. These IP67 transmitter-receiver systems and transceivers with the operating ranges of up to 70 m and 8 meters, respectively, are perfect for cost-effective application and easy installation. Use them to protect the operator and facilitate efficient processes.
Provide effective safeguarding
Machine safety no longer means just personnel protection. It also makes an important contribution to the efficient and smooth flow of processes. Safety Light Grids (also Multiple Light Beam Safety Devices) are electro-sensitive protective devices for access guarding at machines and systems. If one or more of their 2-4 light beams is interrupted, a machine or system is stopped. In this way, they prevent a wide range of damages from fatal accidents to various injuries, and costly, time-consuming damage to production equipment.
Leuze’s IP67 multiple light beam safety devices of the MLD 300 (type 2) and MLD 500 (type 4) series are available as 2-, 3- and 4-beam transmitter-receiver systems for large operating ranges up to 70 m and as cost-efficient 2- and 3-beam transceiver systems for operating ranges up to 8 m.

Check out advantages for you
- With 2, 3 and 4‑beam versions and operating ranges up to 70m, the MLD family always offers the right solution
- Practical swivel mount and clamp brackets for fast installation and alignment
- Easy setup of multi‑sided access guarding together with the easy‑to‑adjust UMC mirror columns
- Integrated laser alignment aid for easy alignment even over long distances
- Integrated muting functions for the easy setup of access guarding on conveyor lines
Highlights of the MLD safety light grids
Use safety light grids in different applications

One‑sided access guarding
Requirement:
Access to a dangerous area at a machine or system is to be guarded.
Solution:
To enable simple entry and exit of material, the MLD 300 / 500 safety light grids can be used. The transceiver models with an operating range of up to 8 m are especially easy to install. For wide‑area guarding, transmitter-receiver models are available with a range of up to 70 m.
Multi‑sided access guarding
Requirement:
Access to the working range is to be guarded while the machine is in operation. To enable material entry and exit, the machine must be easily accessible from multiple sides.
Solution:
The MLD 300 / 500 safety light grids in combination with the UMC mirror columns safeguard access to the machine on multiple sides and over lengths of up to 70 m. The integrated laser alignment aid makes installation quick and easy.


Access guarding on conveyor lines, with muting function
Requirement:
Access guarding on conveyor lines is to prevent persons from accessing the danger zone, while at the same time allowing the transported goods to pass through.
Solution:
The muting function bridges the safety sensor in a controlled manner to allow the transported goods to pass through. Various muting functions are already integrated in the MLD safety light grids:
- 2‑sensor muting, time‑controlled; Universal solution for entry and exit.
- 2‑sensor muting, sequence controlled; Only for exit zones. For increased requirements.
- 4‑sensor muting, time‑controlled; For entry and exit. For increased requirements.
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