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Safety light barriers

SLB 240

SLB 240

  • Compact design With integral evaluation
  • Range 15 m
  • Safe OSSD outputs to PLc
  • Automatic start or restart interlock
  • Sturdy metal enclosure with M12 connector or cable
  • Set-up tool and diagnostic indication
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SLB 440

SLB 440

  • Compact design With integral evaluation
  • Height range 75 m (Reserve up to 90 m)
  • Safe OSSD outputs to PLe
  • Automatic start or restart interlock
  • Sturdy metal enclosure with M12 connector or cable
  • Version with heater for outdoor applications down to –30°C
  • Set-up tool and diagnostic indication
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Accessories

Accessories

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SAFETY LIGHT BARRIERS SLB

The SLB safety light barriers belong to the field of optoelectronic safety devices. These are electro-sensitive protective equipment (ESPE for short), which are mainly used on machining centres for assembly/handling as well as in the wood, paper and printing industries, in high-bay warehouses or packaging machines. The use of optoelectronic safety devices is advantageous because they eliminate the need for movable guards (i.e. safety doors) and at the same time always provide a clear view of the working area of the machine or system.

In optoelectronic safety systems, the transmitter and receiver are located in two separate housings. A protective field of infrared rays emitted by the transmitter is analysed by the receiver. If the protective field is interrupted (by an object or a person), a stop signal is triggered immediately and the machine stops.

SAFETY LIGHT BARRIERS SLB 240 / 440 IN COMPACT DESIGN

The SLB 240 and SLB 440 series safety light barriers are extremely compact and feature integrated evaluation. Thanks to their extremely small design, they blend in well with the surrounding structure and can be installed quickly and easily even where space is limited. The compactness is by no means at the expense of range: both variants achieve a range of 15 metres. The SLB 440-H model has a range of up to 75 metres and is optionally available with an integrated heater for use in extremely low temperatures.

All SLB photoelectric barriers have fail-safe integrated semi-conductor outputs (2 x PNP) and can be incorporated directly in the safety circuit without external safety monitoring. In accordance with IEC 61496, the new product range fulfils all requirements for all type 2 and 4 applications.

All versions have a visual set-up aid in common to simplify commissioning. The SLB versions come with a 4-fold coding stage, with which up to 4 sensor pairs can be operated in one direction on one application without mutual interference. Parameterisation can take place without any aids such as commissioning systems or computers - it is simply carried out using a command device (push-button). For operation, the user can access the automatic or restart, set-up and diagnostic modes.

SAFETY LIGHT BARRIERS SLB AND VARIOUS ACCESSORIES

The Schmersal Group offers various accessories such as deflecting mirrors, floor stands or mounting brackets for the SLB safety light barriers and other optoelectronic safety devices.