Machine Safety

Leuze MLD (Multibeam Light Device)

When functionality becomes economical Multiple Light Beam Safety Devices with muting function ensure constant personnel protection (access guarding).

Hard guarding (bumpers, fencing other barricades) has been the standard practice for keeping individuals away from potentially hazardous machines and processes in the Machine Tool Industry. However, hard guarding can be expensive and take up vital floorspace along with limiting line of sight. A real eyesore.

The MLD multibeam light device can eliminate hard guarding for many machine tool applications resulting in a more compact design. The easy to install 1 to 4 beam safety devices are available in classic receiver/transmitter or all in one transceiver packaging.

With range selections of 0-8m, 0-50m, or 20-70m, protection of large areas can be achieved with a single set. An integrated laser alignment option allows for accurate alignment even at very long range.

The unit can stand up to the harshest of environments due to the water-resistant aluminum extrusion IP67 body and can withstand cold temperatures down to -30°C.

Available in Basic, Advanced or Extended versions which can offer the correct device function based on your application needs. This includes EDM, remote reset, 2-4 sensor muting, double scan, digital display and many more available option.

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Leuze L300B Safety Gate Access Safety Switch

Tamperproof RFID Technology for Tough Environments

The robust L300 safety locking devices for safety applications with up to SIL 3 / PLe are used to secure safety doors on machine and system constructions with dangerous overrun. Comprehensive safety functions are easy to implement with the integrated command and emergency stop buttons. Using modern RFID technology, the L300 series offers maximum protection against manipulation (type 4 according to EN ISO 14119) and is easy to integrate. With a locking force of up to 9750N and the robust metal housing, the devices are particularly suitable for use on heavy doors and in tough environments with integrated command buttons for easy realization of complete safety functions.


  • RFID technology for maximum protection against tampering
  • Safety applications up to SIL 3/PL e with simple integration via OSSD outputs.
  • Robust metal housing, locking force up to 9.750N and IP 67/IP 69K protection class
  • Easy alignment of actuator and switch during mounting
  • Reduced risk of collision between actuator and switch on worn out doors or doors with inaccurate closing
  • Dustproof due to through hole for actuator pin.  Potential accumulations of dust are simply moved out on the opposite side.
  • Two push buttons for request access and acknowledge
  • E-Stop button

Leuze L250 Safety Locking Switch



  • RFID technology for maximum protection against tampering
  • Safety applications up to SIL 3/PL e with simple integration via OSSD outputs.
  • Compact device with locking force up to 2100 N for universal use.
  • Applicable in demanding environments due to east to clean techno polymer housing and protection class IP 67 / IP 69K
  • Easy alignment of actuator and switch during mounting
  • Reduced risk of collision between actuator and switch on worn out doors or doors with inaccurate closing
  • Dustproof due to through hole for actuator pin.  Potential accumulations of dust are simply moved out on the opposite side

Larco - Industrial Safety Mat Systems

How Larco Industrial Safety Mats Work

For 60 years, Larco has focused its efforts on developing and producing the most reliable and durable presence-sensing safety mats available. Designed to meet stringent industrial requirements, Larco safety mats offer a durable solution to your machine safety needs, resisting severe environmental conditions with reliable system performance.

  • Larco presence-sensing safety mats work like a normal-open switch. When stepped on, the "switch" closes and sends a signal to the controller, which sends a stop signal to the guarded machine controls.
  • Larco control units provide intelligence to the system by monitoring the safety mat.
  • Larco safety mats can be secured using a variety of trim and mounting methods that are built for a number of environments, including areas with heavy forklift traffic.

Safety Mats - How tough are Larco Safety Mats? You can drive a forklift over them without damaging the inside components. How sensitive are they? Just 5-10 pounds of normal foot pressure activates the sensor. No wonder they’re the preferred safety mats for industries ranging from automotive and aircraft manufacturing, to factories that produce tires and wood products. Choose from a full spectrum of colors, shapes and sizes, with custom logo options.

Controllers - Larco Safety Mat Controllers allow multiple mats to operate together, making it easy to enable or disable industrial processes. Our mat controls maximize productivity by giving operators and service personnel access to operational and diagnostic status of safety mat deployment.

  • Maximize productivity with control
  • Quickly enable and disable industrial processes
  • Visual feedback on mat status

Applications - Larco Industrial Safety Mat Systems have been used for machine safeguarding to successfully reduce hazards in a number of industries in machine point-of-operation, area, and perimeter guarding applications, including:

  • Robotic Welding
  • Laser Welding/Cutting
  • Water Jet Machines
  • Pick and Place Robots
  • Plastics Molding Machines
  • Assembly Machines
  • Automated Material Handling
  • Packaging Machinery
  • Textile Machinery
  • Conveyors
  • Paper Converting Machinery
  • CNC Punches & Tube Benders

For more information on Industrial Safety Mats and how they can best be applied in your application, please give your local Barry Sales Engineer a call.

View the Larco Industrial Safety Products Catalog

Safety Laser Scanners

Leuze RSL400 - Functional Diversity and Power

The Leuze RSL 400 family of safety laser scanners comprises 16 device types in four staggered operating ranges and function variants. As a result, you can always select the best scanner at the best price/performance ratio – if necessary, with a scanning range of 160 square meters thanks to a scanning angle of 270° and operating range of 8.25 meters. Whether mobile or stationary – the RSL 400 family covers all conceivable applications.

  • RSL 410 - Efficient solutions to simple safety tasks
  • RSL 420 - The all-rounder for standard tasks
  • RSL 430 - Ideal for all stationary applications
  • RSL 440 - With top-notch functions for the most complex applications

View Leuze RSL400 Safety Laser Scanner Brochure

Leuze Safety Light Curtains

Reliable and interference-immune sensor safety technology ensures high system availability and productivity. Wherever man and machine work "hand in hand", our safety light curtains can be used vertically as hand and finger protection, as access guarding as well as horizontally as area protection. With respect to integration capability, availability and cost effectiveness, they meet the highest requirements.

MLC 500 Series of Safety Light Curtains by Leuze includes the newest generation of extremely sturdy type 4 safety light curtains. Three function classes – Basic, Standard and Extended – enable the most efficient use of devices from simple standard applications to complex controlled safeguarding processes. The devices can be used universally, due to the flexible fastening concept and the option of form-locking installation. In addition, the series offers custom solutions for further areas of application. These include extra slim design, AIDA-compliant pin assignment, integrated AS-i interface, protection classes IP67/69K as well as especially impact-resistant, cascadable or EX-certified models. 

MLC 300 Series MLC safety light curtains are the latest generation of extremely slim and robust type 2 devices with slightly set back front screen and reinforced side walls. The devices are available in the Basic and Standard versions, thereby fulfilling various requirements. They can be used universally, due to metal end caps, a flexible fastening concept and the option of form-locking installation. There are also variants which have an AIDA-compliant pin assignment.

Smart Process Gating (SPG) process is based on type 4 safety light curtains of the Leuze electronic MLC 500 Series.  It is implemented in the MLC 530 SPG variant.  In the basic principle, the SPG process uses two control signals:

  • The first signal (CS Control Signal) is provided by the system control (PLC)
  • The second signal (PFI, Protective Field Interruption is generated by the safety light curtain itself when the protective field is interrupted.

Advantages of Smart Process Gating (SPG)

  • Extremely compact, space-saving system design, since there is no need to make space for muting sensors in front/behind the light curtain
  • Outstanding reliability and availability of the safety device and low installation and service costs at the same time (no set-up/alignment/realignment of muting sensors)
  • Reduced risk of tampering by operating personnel
  • Even interrupted parts and pallets with gaps between loading are reliably transported

View the Smart Process Gating (SPG) White Paper - for more information on how the MLC SPG series of light curtains can help you with your application, please give your local Barry Sales Representative at call.

Contrinex - Safetinex Light Curtains

Safety for Finger, Hand, and Access Control

Safetinex light curtains and access control barriers have been designed by Contrinex to offer high quality safeguarding solutions for both personnel and machinery. The range comprises highly sensitive Type 4 devices for finger, hand and access protection in various lengths. For use in rough environments, all types are available with improved degree of protection IP67 and operating temperatures as low as -35°C. Safetinex products meet the applicable international safety standards and have obtained the required product certification for use in the European Union, the United States of America and all other countries where the applicable IEC standards have been adopted. Safetinex light curtains and access control barriers feature the highest safety level, i.e. they correspond to Safety Category 4, PL e according to EN/ISO 13849-1 (former EN 954-1) and Type 4 according to IEC 61496-1 and -2. A full range of accessories is available for mounting, aligning and integration into your automation system.