Renishaw FASTRACK, Installation Manual, Page: 6 / 25

4 QUANTiC RTLC40 / FASTRACK installation guide
QUANTiC readhead
RTLC40 scale
FASTRACK
Ra 3.2
Optional end cover
(Pair A-9589-0058)
18
5
A
Do not cut FASTRACK
over shaded areas
18 ±0.1
35 max
Overall length (L + 12)
Scale length (L)
Measuring length ML = (L − 10) (ML=(L − 25) with dual limits)
10 max (gap)
1 min (gap)
Optical centreline
(Incremental and reference mark)
Detail A
0.1 / 100
0.5
F
F = axis of motion
0.05 F
F = axis of motion
FASTRACK length = (L − 24)
*
*
Assumes 1 mm gap between scale and end covers and zero gap between FASTRACK and end covers.
†
Dimension from FASTRACK surface.
‡
For alternative mechanical datum clamp methods see ‘Scale datum’, page 9 .
NOTES: Minimum recommended FASTRACK length = 100 mm. The reference mark selector and limit actuator locations are correct for the readhead orientation shown.
External magnetic fields greater than 6 mT, in the vicinity of the readhead, may cause false activation of the limit and reference sensors.
RTLC40 / FASTRACK installation drawing
Nominal P limit trigger point Nominal Q limit trigger point
P limit magnet
(A-9653-0138)
Q limit magnet
(A-9653-0139
)
(Dimensions as P limit)
Reference mark selector magnet
(A-9653-0143) (Dimensions as P limit)
10
15
3.7
1.5
†
B
Detail B
15 ±1
2 locations
for spots of Loctite ® 435 ™
(P-AD03-0012) to
secure axis datum position
‡
P and Q limit switch
sensor position
9.2
(adhesive datum clamp
‡
)
NOTE: When FASTRACK reference
mark and adhesive datum aligned
as shown, reference output will be
positionally repeatable with respect
to substrate.
Dimensions and tolerances in mm