The new RL31 series of photoelectric sensors from Pepperl + Fuchs is compact, reliable and easy to use. It can accommodate a universal voltage supply ranging from 12 to 240 V d.c. and also 24 to 240 V a.c. However, a low voltage version is also available with double push-pull output.
The new compact housing has clear and visible LEDs for easy and visible function status. Another key point for this series is its compatibility with other mounting systems. There are three mounting holes with hex collect functionality for easy installation.
A new innovation that Pepperl + Fuchs has incorporated in this series is a colour coding system for distinguishing different principles of operation in using colour marking on the front of the sensor housing.
For example:
Green - Reflection light beam with polarisation filter.
Blue - Reflection light beam without polarisation filter.
White - Direct detection light scanner energetic.
Red - Direct detection light scanner (HGU).
Grey - Single path light beam switch.
For the low voltage units, antivalent push-pull outputs are available in one unit for ease of use. With this functionality there are many advantages. For example, it enables easy storage for only one part number type; improved electromagnetic compatibility for long cable lengths; and no need for clarification regarding replacement parts.
Another key factor is the ease of operation due to simple adjustment without special tools and alignment by means of red light.
The RL31 Series is resistant to extraneous light. Operation near controlled gas discharge lamps is possible. Resistance to daylight allows usage in the outdoor application area, for example light beam switches for gates and anti-collision protection.
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