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WCS position encoding system
Code Rail
6
Code Rail
The absolute code rail is different for the WCS2 system and WCS3 system Therefore, the code
rails are not interchangeable. For WCS3, the height of the code rail is always 70 mm; for
WCS2, the rail can be supplied at a height of 55 mm or 70 mm. Two different materials that
have proven successful in practice are available for the code rail: plastic laminate and stainless
steel. The code rail is delivered in a coil. Unless otherwise ordered, the code rail always starts
with the position value 0.
Laminate Code Rail
The black laminate code rail consists of a special polyester laminate. It is characterized by
good physical and chemical properties and has a low weight. The material has a high tensile
strength and behaves neutrally to oils, greases, and solvents. Because of its good resistance to
acids, alkalis, and aggressive gases, the laminate code rail is suitable for use in electroplating.
The laminate code rail is delivered with mounting holes as standard (WCS3-CS70-L1, see also
the drawing below). If you use a bracket system to mount the code rail, use of a code rail
without mounting holes is recommended (WCS3-CS70-L0).
The laminate code rail can be used in a temperature range from -40 °C ... 60 °C. Temperatures
above 70 °C lead to material deformation.
The specific thermal expansion coefficient is approximately 2.8 x 10
Due to its material properties, the laminate code rail must not be mounted at temperatures
below 10 °C. In applications with large temperature fluctuations (> 50 K), we recommend the
use of the stainless steel code rail.
Warning!
Sanding dust
When mounting the laminate code rail, make sure that sanding dust from current collectors
cannot fall directly onto the surface of the code rail. When mounting the laminate code rail on
the side, mount it above the sanding lines.
Stainless Steel Code Rail
The stainless steel code rail is made from corrosion-resistant spring steel. It is rust-free and is
characterized by high mechanical stability and low thermal expansion.
The stainless steel code rail can be used in the temperature range -40 °C ... 80 °C.
The specific thermal expansion coefficient is 1.6 x 10
Caution!
Risk of injury
Wear protective gloves when mounting the stainless steel code rail.
20
-5
-1
K
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-5
-1
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