Renishaw RCU10, Installation And User Manual, Page: 10 / 202

Contents vii
Appendix G Reference
G.1 Compensation equation overview ........................................................................ G-2
G.1.1 Encoder compensation............................................................................. G-2
G.1.1.1 Definition of position terms ........................................................ G-2
G.1.1.2 Definition of compensation terms .............................................. G-3
G.1.2 Laser compensation ................................................................................. G-5
G.1.2.1 Definition of position terms ........................................................ G-5
G.1.2.2 Definition of compensation terms .............................................. G-6
G.2 Air refraction compensation .................................................................................. G-9
G.3 Worked example – laser compensation ............................................................. G-11
G.3.1 Direction sense setting ........................................................................... G-11
G.3.2 Laser dead path (LO) ............................................................................. G-12
G.3.3 Workpiece thermal expansion compensation (
α
w
, T
wc
, WO).................. G-12
G.3.4 Machine structure thermal expansion compensation (T
sc
, S) ................ G-12
Appendix H Test records
H.1 Installation and configuration checklist .................................................................. H-2
H.2 Installation details .................................................................................................. H-3
H.3 Sensor record/test sheet ....................................................................................... H-5
H.4 Parameter table record sheets .............................................................................. H-7