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14
Golden rules of mechanical installation
The HS20 system provides position feedback of changes in linear distance between a reference
and target optic. Any movement in the HS20 laser, or interferometer assembly has the potential to
cause measurement errors or the signal strength to drop. Follow these 'golden rules' to help prevent
mechanical installation issues during use.
• Ensure all components are rigidly located with the recommended fixings. A lack of rigidity
between the optics and the machine will result in measurement errors.
• Lock the alignment plate position after alignment to prevent creep when the system is in use.
• Do not touch the glass surfaces of the optics as this will reduce signal strength.
This section covers mounting the alignment plate, HS20 and the measurement optics.
Mounting options for the HS20 laser head
There are two typical mounting methods for the HS20, detailed below. The application will generally
govern the most practical method of mounting the HS20. Both options assume that the HS20 is
mounted on the HS20 alignment plate.
1. Mounting directly to the machine rail with the HS20 laser beam parallel to the axis travel.
Figure 5 - Direct mounting onto machine rail
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