EUCHNER Light curtains

Light grids and light curtains are electro-sensitive protective equipment (ESPE) for securing danger areas on machines and installations.
They use several light beams to form an invisible safety light curtain in front of the danger area.
When a machine operator interrupts one of these light beams, this will cause the safety outputs to switch off.
When installed vertically, light grids and light curtains serve the purpose of access control for operating personnel.
When installed horizontally, they secure areas or prevent people from stepping behind them.

Electro-sensitive protective equipment is used whenever:

■ a machine operator must interact with the machine in very brief cycles, e.g. at loading points of automatic assembly machines.
■ dangerous work areas must be secured in a continuously interlinked material flow without disturbing the material flow.
■ the danger area must be secured on machines without a safety enclosure, e.g. on sheet metal processing machines, on presses, on film
winding machines and on paper cutting machines.
 

The advantages of LCA at a glance

■ High level of protection against tampering
■ Category 4/PL e or category 2/PL c
■ SIL 3 or SIL 1
■ Less wiring work thanks to plug connector
■ High degree of protection IP67/IP65
■ Deflection mirrors permit versatile use
■ Shorter access time and greater productivity through simple interaction between operator and machine
■ Compact design
■ Very simple setup through various start modes
■ Wide product range with numerous applications

Differentiation between LCA devices of type 2 and type 4

Light grids vs. light curtains

The basic distinction between light grids and light curtains is the number of light beams used to produce a protective field.
Light grids produce a protective field consisting of 2 – 4 light beams. Owing to the large distance between the individual light beams, light
grids are particularly suitable for access control to large work areas and for applications involving a large distance between the operator and the
hazardous movement.
Light curtains consist of many light beams, which can detect different body parts depending on the resolution (14 – 50 mm). A distinction is
made between finger, hand and body protection.

Overview of series LCA

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