Readhead Mounting And Alignment - Renishaw VIONiC RTLC20-S Installation Manual

Readhead mounting and alignment

Mounting brackets
The bracket must have a flat mounting surface and should provide adjustment to enable conformance to
the installation tolerances, allow adjustment to the rideheight of the readhead, and be sufficiently stiff to
prevent deflection or vibration of the readhead during operation.
Readhead set-up
Ensure that the scale, readhead optical window and mounting face are clean and free from obstructions.
NOTE: When cleaning the readhead and scale apply cleaning fluid sparingly; do not soak.
To set nominal rideheight, place the green spacer with the aperture under the optical centre of the
readhead to allow normal LED function during set‑up procedure. Adjust the readhead to achieve a flashing
Green LED along the full axis of travel. The faster the flash rate, the closer it is to optimum set‑up. The
optional Advanced Diagnostic Tool ADTi-100 (A-6195-0100) and ADT View software can be used to
optimise signal strength in challenging installations. See
NOTE: When re-installing the readhead, factory defaults should be restored
Pitch
0° ±1°
VIONiC RTLC20-S installation guide
www.renishaw.com/adt for more information.
(see page 9).
Readhead set-up LED status
Yaw
0° ±0.4°
Green Orange
flashing flashing
0° ±0.5°
Green spacer
Rideheight
2.1 ±0.15 mm
Readhead LED diagnostics
Mode
Installation mode Green flashing
Orange flashing
Red flashing
Calibration mode Blue single flashing
Blue double flashing
Normal operation Blue
Green
Red
Blank flash
Alarm 4 red flashes
Red
flashing
Roll
LED Status
Good set‑up, maximise flash rate for optimum set‑up
Poor set‑up, adjust readhead to obtain Green flashing LED
Poor set‑up, adjust readhead to obtain Green flashing LED
Calibrating incremental signals
Calibrating reference mark
AGC on, optimum set-up
AGC off, optimum set-up
Poor set‑up; signal may be too low for reliable operation
Reference mark detected (visible indication at speed
< 100 mm/s only)
Low signal or over signal; system in error
8