Renishaw VIONiC REXM20, Руководство по установке, Страница: 12 / 20

VIONiC REXM20/REXT20 installation guide 10
Readhead mounting and alignment
Mounting brackets
The bracket must have a flat mounting surface and should 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.
NOTES:
X Ensure the protective film is removed from the ring before installing the readhead.
X When cleaning 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
for a complete rotation. 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
www.renishaw.com/adt
for more details.
NOTE: When re-installing the readhead factory defaults should be restored (page 12) .
Readhead set-up LED status
Green
flashing
Orange
flashing
Red
flashing
Roll
0° ±0.5°
Yaw
0° ±0.4°
Pitch
0° ±1°
Optical centreline
Green spacer
Rideheight
2.1 ±0.15 mm
Readhead LED diagnostics
Mode LED Status
Installation mode Green flashing Good set‑up, maximise flash rate for optimum set‑up
Orange flashing Poor set‑up, adjust readhead to obtain Green flashing LED
Red flashing Poor set‑up, adjust readhead to obtain Green flashing LED
Calibration mode Blue single flashing Calibrating incremental signals
Blue double flashing Calibrating reference mark
Normal operation Blue AGC on, optimum set-up
Green AGC off, optimum set-up
Red Poor set‑up; signal may be too low for reliable operation
Blank flash Reference mark detected (visible indication at speed
< 100 mm/s only)
Alarm 4 red flashes Low signal, over signal, or overspeed; system in error
Reference mark position
REXM20
IN-TRAC
™
reference mark is integrated in the scale, radially aligned with the centre of the mounting hole to
the left of the ‘Renishaw’ logo within ±0.5 mm. No external actuator or physical adjustment is required.
REXT20
The second reference mark is 180° from the first.