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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 the scale apply
the cleaning fluid sparingly, do not soak.
1. Mount the readhead to the bracket using 2 M2.5 screws.
2. To set the 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.
3. 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 www.renishaw.com/adt
for more information.
NOTE: When reinstalling the readhead the factory defaults
should be restored (see
'Restoring factory defaults'
page 21).
1
See
'Troubleshooting'
on page
22
for more information on
diagnosing faults.
Readhead set-up LED status
Green
Orange
flashing
flashing
Readhead LED diagnostics
Mode
Installation mode
Calibration mode
Normal operation
on
Alarm
Red
flashing
Pitch
0° ±1°
1
LED
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
Blue single-flashing
Blue double-flashing
Blue
Green
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)
Four red flashes
Low signal, over signal, or overspeed; system in error
Red and purple flashing
(analogue variant only)
Yaw
0° ±0.9°
Roll
0° ±0.8°
Green spacer
Rideheight
2.1 ±0.2 mm
Status
Calibrating incremental signals
Calibrating reference mark
AGC on; optimum set-up
AGC off; optimum set-up
AGC out of normal operating range
www.renishaw.com
19
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