Waldkirch, November 2007 – Space-saving mounting, simple teach-in, reliable detection and rapid switching – these are the strengths of the new WLL170T-2 “Teach & Go” fibre-optic photoelectric switch. In combination with more than 100 different fibre-optic cables (made of plastic or glass fibre) they open up ideal automation solutions, particularly in the compact machine segment.

The WLL170T-2 is a photoelectric switch for fibre-optic cables, offering snap-in mounting in the control cabinet. The WLL170T-2 is particularly suitable for standard applications and provides high functional reserves even at the maximum range of 4,000 mm. The sensors are rapid in two senses: firstly, the high-speed variants offer switching frequencies of 10 kHz and, secondly, due to the uncomplicated teaching-in of switching thresholds in each of the four possible teach-in modes. After the “Teach” comes the “Go” – and the microprocessor-supported, and thus extremely stable and reliable, switching behaviour of the WLL170T-2 in its IP 66 housing is impressive.

Wide range of applications

Photoelectric switches with fibre-optic cables are always the first choice when mounting space is very limited. The transmitter and receiver are accommodated in a single housing and are mounted in an easily accessible location. Sleeved plastic or fibre-glass optical fibres bring the light to the restricted installation location. The WLL170T-2, offering “snakelike” access from the sensor to the object, is mainly used in the semiconductor industry, electronic production, packaging machines, handling and assembly systems, precision mechanics and various types of special machine construction.