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Storage and handling
The HS20 laser encoder can be stored at temperatures between -20 °C and +70 °C (-4 °F and
+158 °F). Do not store the HS20 laser encoder in conditions of high humidity or otherwise subject it to
conditions which may cause condensation to form on the optics.
Renishaw's HS20 laser encoders and associated equipment are precision optical and electronic tools
used for obtaining precise measurements and must therefore be treated with appropriate care.
Ensure protection is provided for both the HS20 and the associated optics when transporting a
machine with the equipment already installed. Refer to Appendix B for maintenance and cleaning
instructions.
Machine requirements summary
The following defines the minimum requirements, which must be provided to successfully install the
HS20 laser head.
• The machine controller must accept digital encoder feedback inputs of RS485/422 format
differential AquadB or analogue sin/cos (1 Vpp).
• The straightness of travel of any axis to which HS20 is to be fitted must be within ±0.5 mm to
maintain beam alignment.
• If beam protection ducting is required there must be sufficient clearance.
• The mounting location for the HS20 laser heads must remain within 0 to 40 °C (32 to 104 °F).
• The beam path must be reasonably thermally stable. Otherwise suitable beam protection (such as
HS20 beam protection ducting) must be used.
• Access is required to a 24V DC power supply for each HS20 laser head.
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